diff options
Diffstat (limited to 'include')
198 files changed, 3077 insertions, 1693 deletions
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 5afb6ceb284f..a3abcc4b7d9f 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -588,8 +588,13 @@ bool acpi_dma_supported(struct acpi_device *adev); enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, u64 *size); -int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr); - +int acpi_dma_configure_id(struct device *dev, enum dev_dma_attr attr, + const u32 *input_id); +static inline int acpi_dma_configure(struct device *dev, + enum dev_dma_attr attr) +{ + return acpi_dma_configure_id(dev, attr, NULL); +} struct acpi_device *acpi_find_child_device(struct acpi_device *parent, u64 address, bool check_children); int acpi_is_root_bridge(acpi_handle); diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h index b0b163b9efc6..bdcac69fa6bd 100644 --- a/include/acpi/actbl3.h +++ b/include/acpi/actbl3.h @@ -415,6 +415,13 @@ struct acpi_table_tpm2 { /* Platform-specific data follows */ }; +/* Optional trailer for revision 4 holding platform-specific data */ +struct acpi_tpm2_phy { + u8 start_method_specific[12]; + u32 log_area_minimum_length; + u64 log_area_start_address; +}; + /* Values for start_method above */ #define ACPI_TPM2_NOT_ALLOWED 0 diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild index 44ec80e70518..74b0612601dd 100644 --- a/include/asm-generic/Kbuild +++ b/include/asm-generic/Kbuild @@ -45,6 +45,7 @@ mandatory-y += pci.h mandatory-y += percpu.h mandatory-y += pgalloc.h mandatory-y += preempt.h +mandatory-y += rwonce.h mandatory-y += sections.h mandatory-y += serial.h mandatory-y += shmparam.h diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h index 286867f593d2..11f96f40f4a7 100644 --- a/include/asm-generic/atomic.h +++ b/include/asm-generic/atomic.h @@ -159,8 +159,6 @@ ATOMIC_OP(xor, ^) * resource counting etc.. */ -#define ATOMIC_INIT(i) { (i) } - /** * atomic_read - read atomic variable * @v: pointer of type atomic_t diff --git a/include/asm-generic/barrier.h b/include/asm-generic/barrier.h index 2eacaf7d62f6..fec97dc34de7 100644 --- a/include/asm-generic/barrier.h +++ b/include/asm-generic/barrier.h @@ -13,7 +13,7 @@ #ifndef __ASSEMBLY__ -#include <linux/compiler.h> +#include <asm/rwonce.h> #ifndef nop #define nop() asm volatile ("nop") @@ -46,10 +46,6 @@ #define dma_wmb() wmb() #endif -#ifndef read_barrier_depends -#define read_barrier_depends() do { } while (0) -#endif - #ifndef __smp_mb #define __smp_mb() mb() #endif @@ -62,10 +58,6 @@ #define __smp_wmb() wmb() #endif -#ifndef __smp_read_barrier_depends -#define __smp_read_barrier_depends() read_barrier_depends() -#endif - #ifdef CONFIG_SMP #ifndef smp_mb @@ -80,10 +72,6 @@ #define smp_wmb() __smp_wmb() #endif -#ifndef smp_read_barrier_depends -#define smp_read_barrier_depends() __smp_read_barrier_depends() -#endif - #else /* !CONFIG_SMP */ #ifndef smp_mb @@ -98,10 +86,6 @@ #define smp_wmb() barrier() #endif -#ifndef smp_read_barrier_depends -#define smp_read_barrier_depends() do { } while (0) -#endif - #endif /* CONFIG_SMP */ #ifndef __smp_store_mb @@ -196,7 +180,6 @@ do { \ #define virt_mb() __smp_mb() #define virt_rmb() __smp_rmb() #define virt_wmb() __smp_wmb() -#define virt_read_barrier_depends() __smp_read_barrier_depends() #define virt_store_mb(var, value) __smp_store_mb(var, value) #define virt_mb__before_atomic() __smp_mb__before_atomic() #define virt_mb__after_atomic() __smp_mb__after_atomic() diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index c94e33ae3e7b..18b0f4eee8cb 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h @@ -3,6 +3,7 @@ #define _ASM_GENERIC_BUG_H #include <linux/compiler.h> +#include <linux/instrumentation.h> #define CUT_HERE "------------[ cut here ]------------\n" diff --git a/include/asm-generic/cacheflush.h b/include/asm-generic/cacheflush.h index 907fa5d16494..4a674db4e1fa 100644 --- a/include/asm-generic/cacheflush.h +++ b/include/asm-generic/cacheflush.h @@ -2,6 +2,11 @@ #ifndef _ASM_GENERIC_CACHEFLUSH_H #define _ASM_GENERIC_CACHEFLUSH_H +struct mm_struct; +struct vm_area_struct; +struct page; +struct address_space; + /* * The cache doesn't need to be flushed when TLB entries change when * the cache is mapped to physical memory, not virtual memory diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 8b1e020e9a03..30a3aab312e6 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -456,7 +456,7 @@ static inline void writesq(volatile void __iomem *addr, const void *buffer, #if !defined(inb) && !defined(_inb) #define _inb _inb -static inline u16 _inb(unsigned long addr) +static inline u8 _inb(unsigned long addr) { u8 val; @@ -482,7 +482,7 @@ static inline u16 _inw(unsigned long addr) #if !defined(inl) && !defined(_inl) #define _inl _inl -static inline u16 _inl(unsigned long addr) +static inline u32 _inl(unsigned long addr) { u32 val; diff --git a/include/asm-generic/mmiowb.h b/include/asm-generic/mmiowb.h index 9439ff037b2d..5698fca3bf56 100644 --- a/include/asm-generic/mmiowb.h +++ b/include/asm-generic/mmiowb.h @@ -27,7 +27,7 @@ #include <asm/smp.h> DECLARE_PER_CPU(struct mmiowb_state, __mmiowb_state); -#define __mmiowb_state() this_cpu_ptr(&__mmiowb_state) +#define __mmiowb_state() raw_cpu_ptr(&__mmiowb_state) #else #define __mmiowb_state() arch_mmiowb_state() #endif /* arch_mmiowb_state */ @@ -35,7 +35,9 @@ DECLARE_PER_CPU(struct mmiowb_state, __mmiowb_state); static inline void mmiowb_set_pending(void) { struct mmiowb_state *ms = __mmiowb_state(); - ms->mmiowb_pending = ms->nesting_count; + + if (likely(ms->nesting_count)) + ms->mmiowb_pending = ms->nesting_count; } static inline void mmiowb_spin_lock(void) diff --git a/include/asm-generic/qspinlock.h b/include/asm-generic/qspinlock.h index fde943d180e0..2b26cd729b94 100644 --- a/include/asm-generic/qspinlock.h +++ b/include/asm-generic/qspinlock.h @@ -11,6 +11,7 @@ #define __ASM_GENERIC_QSPINLOCK_H #include <asm-generic/qspinlock_types.h> +#include <linux/atomic.h> /** * queued_spin_is_locked - is the spinlock locked? diff --git a/include/asm-generic/qspinlock_types.h b/include/asm-generic/qspinlock_types.h index 56d1309d32f8..2fd1fb89ec36 100644 --- a/include/asm-generic/qspinlock_types.h +++ b/include/asm-generic/qspinlock_types.h @@ -9,15 +9,7 @@ #ifndef __ASM_GENERIC_QSPINLOCK_TYPES_H #define __ASM_GENERIC_QSPINLOCK_TYPES_H -/* - * Including atomic.h with PARAVIRT on will cause compilation errors because - * of recursive header file incluson via paravirt_types.h. So don't include - * it if PARAVIRT is on. - */ -#ifndef CONFIG_PARAVIRT #include <linux/types.h> -#include <linux/atomic.h> -#endif typedef struct qspinlock { union { diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h new file mode 100644 index 000000000000..8d0a6280e982 --- /dev/null +++ b/include/asm-generic/rwonce.h @@ -0,0 +1,90 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Prevent the compiler from merging or refetching reads or writes. The + * compiler is also forbidden from reordering successive instances of + * READ_ONCE and WRITE_ONCE, but only when the compiler is aware of some + * particular ordering. One way to make the compiler aware of ordering is to + * put the two invocations of READ_ONCE or WRITE_ONCE in different C + * statements. + * + * These two macros will also work on aggregate data types like structs or + * unions. + * + * Their two major use cases are: (1) Mediating communication between + * process-level code and irq/NMI handlers, all running on the same CPU, + * and (2) Ensuring that the compiler does not fold, spindle, or otherwise + * mutilate accesses that either do not require ordering or that interact + * with an explicit memory barrier or atomic instruction that provides the + * required ordering. + */ +#ifndef __ASM_GENERIC_RWONCE_H +#define __ASM_GENERIC_RWONCE_H + +#ifndef __ASSEMBLY__ + +#include <linux/compiler_types.h> +#include <linux/kasan-checks.h> +#include <linux/kcsan-checks.h> + +/* + * Yes, this permits 64-bit accesses on 32-bit architectures. These will + * actually be atomic in some cases (namely Armv7 + LPAE), but for others we + * rely on the access being split into 2x32-bit accesses for a 32-bit quantity + * (e.g. a virtual address) and a strong prevailing wind. + */ +#define compiletime_assert_rwonce_type(t) \ + compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ + "Unsupported access size for {READ,WRITE}_ONCE().") + +/* + * Use __READ_ONCE() instead of READ_ONCE() if you do not require any + * atomicity. Note that this may result in tears! + */ +#ifndef __READ_ONCE +#define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x)) +#endif + +#define READ_ONCE(x) \ +({ \ + compiletime_assert_rwonce_type(x); \ + __READ_ONCE(x); \ +}) + +#define __WRITE_ONCE(x, val) \ +do { \ + *(volatile typeof(x) *)&(x) = (val); \ +} while (0) + +#define WRITE_ONCE(x, val) \ +do { \ + compiletime_assert_rwonce_type(x); \ + __WRITE_ONCE(x, val); \ +} while (0) + +static __no_sanitize_or_inline +unsigned long __read_once_word_nocheck(const void *addr) +{ + return __READ_ONCE(*(unsigned long *)addr); +} + +/* + * Use READ_ONCE_NOCHECK() instead of READ_ONCE() if you need to load a + * word from memory atomically but without telling KASAN/KCSAN. This is + * usually used by unwinding code when walking the stack of a running process. + */ +#define READ_ONCE_NOCHECK(x) \ +({ \ + compiletime_assert(sizeof(x) == sizeof(unsigned long), \ + "Unsupported access size for READ_ONCE_NOCHECK()."); \ + (typeof(x))__read_once_word_nocheck(&(x)); \ +}) + +static __no_kasan_or_inline +unsigned long read_word_at_a_time(const void *addr) +{ + kasan_check_read(addr, 1); + return *(unsigned long *)addr; +} + +#endif /* __ASSEMBLY__ */ +#endif /* __ASM_GENERIC_RWONCE_H */ diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h index 3f1649a8cf55..ef75ec86f865 100644 --- a/include/asm-generic/tlb.h +++ b/include/asm-generic/tlb.h @@ -512,6 +512,38 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm } #endif +/* + * tlb_flush_{pte|pmd|pud|p4d}_range() adjust the tlb->start and tlb->end, + * and set corresponding cleared_*. + */ +static inline void tlb_flush_pte_range(struct mmu_gather *tlb, + unsigned long address, unsigned long size) +{ + __tlb_adjust_range(tlb, address, size); + tlb->cleared_ptes = 1; +} + +static inline void tlb_flush_pmd_range(struct mmu_gather *tlb, + unsigned long address, unsigned long size) +{ + __tlb_adjust_range(tlb, address, size); + tlb->cleared_pmds = 1; +} + +static inline void tlb_flush_pud_range(struct mmu_gather *tlb, + unsigned long address, unsigned long size) +{ + __tlb_adjust_range(tlb, address, size); + tlb->cleared_puds = 1; +} + +static inline void tlb_flush_p4d_range(struct mmu_gather *tlb, + unsigned long address, unsigned long size) +{ + __tlb_adjust_range(tlb, address, size); + tlb->cleared_p4ds = 1; +} + #ifndef __tlb_remove_tlb_entry #define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0) #endif @@ -525,19 +557,17 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm */ #define tlb_remove_tlb_entry(tlb, ptep, address) \ do { \ - __tlb_adjust_range(tlb, address, PAGE_SIZE); \ - tlb->cleared_ptes = 1; \ + tlb_flush_pte_range(tlb, address, PAGE_SIZE); \ __tlb_remove_tlb_entry(tlb, ptep, address); \ } while (0) #define tlb_remove_huge_tlb_entry(h, tlb, ptep, address) \ do { \ unsigned long _sz = huge_page_size(h); \ - __tlb_adjust_range(tlb, address, _sz); \ if (_sz == PMD_SIZE) \ - tlb->cleared_pmds = 1; \ + tlb_flush_pmd_range(tlb, address, _sz); \ else if (_sz == PUD_SIZE) \ - tlb->cleared_puds = 1; \ + tlb_flush_pud_range(tlb, address, _sz); \ __tlb_remove_tlb_entry(tlb, ptep, address); \ } while (0) @@ -551,8 +581,7 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm #define tlb_remove_pmd_tlb_entry(tlb, pmdp, address) \ do { \ - __tlb_adjust_range(tlb, address, HPAGE_PMD_SIZE); \ - tlb->cleared_pmds = 1; \ + tlb_flush_pmd_range(tlb, address, HPAGE_PMD_SIZE); \ __tlb_remove_pmd_tlb_entry(tlb, pmdp, address); \ } while (0) @@ -566,8 +595,7 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm #define tlb_remove_pud_tlb_entry(tlb, pudp, address) \ do { \ - __tlb_adjust_range(tlb, address, HPAGE_PUD_SIZE); \ - tlb->cleared_puds = 1; \ + tlb_flush_pud_range(tlb, address, HPAGE_PUD_SIZE); \ __tlb_remove_pud_tlb_entry(tlb, pudp, address); \ } while (0) @@ -592,9 +620,8 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm #ifndef pte_free_tlb #define pte_free_tlb(tlb, ptep, address) \ do { \ - __tlb_adjust_range(tlb, address, PAGE_SIZE); \ + tlb_flush_pmd_range(tlb, address, PAGE_SIZE); \ tlb->freed_tables = 1; \ - tlb->cleared_pmds = 1; \ __pte_free_tlb(tlb, ptep, address); \ } while (0) #endif @@ -602,9 +629,8 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm #ifndef pmd_free_tlb #define pmd_free_tlb(tlb, pmdp, address) \ do { \ - __tlb_adjust_range(tlb, address, PAGE_SIZE); \ + tlb_flush_pud_range(tlb, address, PAGE_SIZE); \ tlb->freed_tables = 1; \ - tlb->cleared_puds = 1; \ __pmd_free_tlb(tlb, pmdp, address); \ } while (0) #endif @@ -612,9 +638,8 @@ static inline void tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vm #ifndef pud_free_tlb #define pud_free_tlb(tlb, pudp, address) \ do { \ - __tlb_adjust_range(tlb, address, PAGE_SIZE); \ + tlb_flush_p4d_range(tlb, address, PAGE_SIZE); \ tlb->freed_tables = 1; \ - tlb->cleared_p4ds = 1; \ __pud_free_tlb(tlb, pudp, address); \ } while (0) #endif diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index db600ef218d7..de8493cc3082 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -109,12 +109,31 @@ #endif /* - * Align to a 32 byte boundary equal to the - * alignment gcc 4.5 uses for a struct + * GCC 4.5 and later have a 32 bytes section alignment for structures. + * Except GCC 4.9, that feels the need to align on 64 bytes. */ +#if __GNUC__ == 4 && __GNUC_MINOR__ == 9 +#define STRUCT_ALIGNMENT 64 +#else #define STRUCT_ALIGNMENT 32 +#endif #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT) +/* + * The order of the sched class addresses are important, as they are + * used to determine the order of the priority of each sched class in + * relation to each other. + */ +#define SCHED_DATA \ + STRUCT_ALIGN(); \ + __begin_sched_classes = .; \ + *(__idle_sched_class) \ + *(__fair_sched_class) \ + *(__rt_sched_class) \ + *(__dl_sched_class) \ + *(__stop_sched_class) \ + __end_sched_classes = .; + /* The actual configuration determine if the init/exit sections * are handled as text/data or they can be discarded (which * often happens at runtime) @@ -341,7 +360,8 @@ #define PAGE_ALIGNED_DATA(page_align) \ . = ALIGN(page_align); \ - *(.data..page_aligned) + *(.data..page_aligned) \ + . = ALIGN(page_align); #define READ_MOSTLY_DATA(align) \ . = ALIGN(align); \ @@ -388,6 +408,7 @@ .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ __start_rodata = .; \ *(.rodata) *(.rodata.*) \ + SCHED_DATA \ RO_AFTER_INIT_DATA /* Read only after init */ \ . = ALIGN(8); \ __start___tracepoints_ptrs = .; \ @@ -737,7 +758,9 @@ . = ALIGN(bss_align); \ .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ BSS_FIRST_SECTIONS \ + . = ALIGN(PAGE_SIZE); \ *(.bss..page_aligned) \ + . = ALIGN(PAGE_SIZE); \ *(.dynbss) \ *(BSS_MAIN) \ *(COMMON) \ diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h index 2b4d2b06ccbd..fcde59c65a81 100644 --- a/include/crypto/acompress.h +++ b/include/crypto/acompress.h @@ -106,6 +106,24 @@ struct acomp_alg { */ struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type, u32 mask); +/** + * crypto_alloc_acomp_node() -- allocate ACOMPRESS tfm handle with desired NUMA node + * @alg_name: is the cra_name / name or cra_driver_name / driver name of the + * compression algorithm e.g. "deflate" + * @type: specifies the type of the algorithm + * @mask: specifies the mask for the algorithm + * @node: specifies the NUMA node the ZIP hardware belongs to + * + * Allocate a handle for a compression algorithm. Drivers should try to use + * (de)compressors on the specified NUMA node. + * The returned struct crypto_acomp is the handle that is required for any + * subsequent API invocation for the compression operations. + * + * Return: allocated handle in case of success; IS_ERR() is true in case + * of an error, PTR_ERR() returns the error code. + */ +struct crypto_acomp *crypto_alloc_acomp_node(const char *alg_name, u32 type, + u32 mask, int node); static inline struct crypto_tfm *crypto_acomp_tfm(struct crypto_acomp *tfm) { diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 00a9cf98debe..143d884d65c7 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -116,7 +116,7 @@ struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, void *crypto_spawn_tfm2(struct crypto_spawn *spawn); struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb); -int crypto_check_attr_type(struct rtattr **tb, u32 type); +int crypto_check_attr_type(struct rtattr **tb, u32 type, u32 *mask_ret); const char *crypto_attr_alg_name(struct rtattr *rta); int crypto_attr_u32(struct rtattr *rta, u32 *num); int crypto_inst_setname(struct crypto_instance *inst, const char *name, @@ -235,18 +235,29 @@ static inline struct crypto_async_request *crypto_get_backlog( container_of(queue->backlog, struct crypto_async_request, list); } -static inline int crypto_requires_off(u32 type, u32 mask, u32 off) +static inline u32 crypto_requires_off(struct crypto_attr_type *algt, u32 off) { - return (type ^ off) & mask & off; + return (algt->type ^ off) & algt->mask & off; } /* - * Returns CRYPTO_ALG_ASYNC if type/mask requires the use of sync algorithms. - * Otherwise returns zero. + * When an algorithm uses another algorithm (e.g., if it's an instance of a + * template), these are the flags that should always be set on the "outer" + * algorithm if any "inner" algorithm has them set. */ -static inline int crypto_requires_sync(u32 type, u32 mask) +#define CRYPTO_ALG_INHERITED_FLAGS \ + (CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK | \ + CRYPTO_ALG_ALLOCATES_MEMORY) + +/* + * Given the type and mask that specify the flags restrictions on a template + * instance being created, return the mask that should be passed to + * crypto_grab_*() (along with type=0) to honor any request the user made to + * have any of the CRYPTO_ALG_INHERITED_FLAGS clear. + */ +static inline u32 crypto_algt_inherited_mask(struct crypto_attr_type *algt) { - return crypto_requires_off(type, mask, CRYPTO_ALG_ASYNC); + return crypto_requires_off(algt, CRYPTO_ALG_INHERITED_FLAGS); } noinline unsigned long __crypto_memneq(const void *a, const void *b, size_t size); diff --git a/include/crypto/chacha.h b/include/crypto/chacha.h index 2676f4fbd4c1..3a1c72fdb7cf 100644 --- a/include/crypto/chacha.h +++ b/include/crypto/chacha.h @@ -25,11 +25,7 @@ #define CHACHA_BLOCK_SIZE 64 #define CHACHAPOLY_IV_SIZE 12 -#ifdef CONFIG_X86_64 -#define CHACHA_STATE_WORDS ((CHACHA_BLOCK_SIZE + 12) / sizeof(u32)) -#else #define CHACHA_STATE_WORDS (CHACHA_BLOCK_SIZE / sizeof(u32)) -#endif /* 192-bit nonce, then 64-bit stream position */ #define XCHACHA_IV_SIZE 32 diff --git a/include/crypto/chacha20poly1305.h b/include/crypto/chacha20poly1305.h index 234ee28078ef..d2ac3ff7dc1e 100644 --- a/include/crypto/chacha20poly1305.h +++ b/include/crypto/chacha20poly1305.h @@ -45,4 +45,6 @@ bool chacha20poly1305_decrypt_sg_inplace(struct scatterlist *src, size_t src_len const u64 nonce, const u8 key[CHACHA20POLY1305_KEY_SIZE]); +bool chacha20poly1305_selftest(void); + #endif /* __CHACHA20POLY1305_H */ diff --git a/include/crypto/hash.h b/include/crypto/hash.h index 4829d2367eda..19ce91f2359f 100644 --- a/include/crypto/hash.h +++ b/include/crypto/hash.h @@ -687,7 +687,7 @@ static inline void ahash_request_set_crypt(struct ahash_request *req, * The message digest API is able to maintain state information for the * caller. * - * The synchronous message digest API can store user-related context in in its + * The synchronous message digest API can store user-related context in its * shash_desc request data structure. */ diff --git a/include/crypto/if_alg.h b/include/crypto/if_alg.h index 56527c85d122..ee6412314f8f 100644 --- a/include/crypto/if_alg.h +++ b/include/crypto/if_alg.h @@ -29,8 +29,8 @@ struct alg_sock { struct sock *parent; - unsigned int refcnt; - unsigned int nokey_refcnt; + atomic_t refcnt; + atomic_t nokey_refcnt; const struct af_alg_type *type; void *private; @@ -135,6 +135,7 @@ struct af_alg_async_req { * SG? * @enc: Cryptographic operation to be performed when * recvmsg is invoked. + * @init: True if metadata has been sent. * @len: Length of memory allocated for this data structure. */ struct af_alg_ctx { @@ -151,6 +152,7 @@ struct af_alg_ctx { bool more; bool merge; bool enc; + bool init; unsigned int len; }; @@ -226,7 +228,7 @@ unsigned int af_alg_count_tsgl(struct sock *sk, size_t bytes, size_t offset); void af_alg_pull_tsgl(struct sock *sk, size_t used, struct scatterlist *dst, size_t dst_offset); void af_alg_wmem_wakeup(struct sock *sk); -int af_alg_wait_for_data(struct sock *sk, unsigned flags); +int af_alg_wait_for_data(struct sock *sk, unsigned flags, unsigned min); int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size, unsigned int ivsize); ssize_t af_alg_sendpage(struct socket *sock, struct page *page, diff --git a/include/crypto/internal/geniv.h b/include/crypto/internal/geniv.h index 229d37681a9d..7fd7126f593a 100644 --- a/include/crypto/internal/geniv.h +++ b/include/crypto/internal/geniv.h @@ -20,7 +20,7 @@ struct aead_geniv_ctx { }; struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl, - struct rtattr **tb, u32 type, u32 mask); + struct rtattr **tb); int aead_init_geniv(struct crypto_aead *tfm); void aead_exit_geniv(struct crypto_aead *tfm); diff --git a/include/crypto/sha.h b/include/crypto/sha.h index 10753ff71d46..4ff3da816630 100644 --- a/include/crypto/sha.h +++ b/include/crypto/sha.h @@ -147,6 +147,7 @@ static inline void sha256_init(struct sha256_state *sctx) } void sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len); void sha256_final(struct sha256_state *sctx, u8 *out); +void sha256(const u8 *data, unsigned int len, u8 *out); static inline void sha224_init(struct sha256_state *sctx) { diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h index 141e7690f9c3..5663f71198b3 100644 --- a/include/crypto/skcipher.h +++ b/include/crypto/skcipher.h @@ -18,7 +18,7 @@ * @iv: Initialisation Vector * @src: Source SG list * @dst: Destination SG list - * @base: Underlying async request request + * @base: Underlying async request * @__ctx: Start of private context data */ struct skcipher_request { diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 6c3ef49b46b3..e73dea5c7333 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -866,6 +866,18 @@ struct drm_mode_config { bool prefer_shadow_fbdev; /** + * @fbdev_use_iomem: + * + * Set to true if framebuffer reside in iomem. + * When set to true memcpy_toio() is used when copying the framebuffer in + * drm_fb_helper.drm_fb_helper_dirty_blit_real(). + * + * FIXME: This should be replaced with a per-mapping is_iomem + * flag (like ttm does), and then used everywhere in fbdev code. + */ + bool fbdev_use_iomem; + + /** * @quirk_addfb_prefer_xbgr_30bpp: * * Special hack for legacy ADDFB to keep nouveau userspace happy. Should diff --git a/include/dt-bindings/clock/vf610-clock.h b/include/dt-bindings/clock/vf610-clock.h index 95394f35a74a..0f2d60e884dc 100644 --- a/include/dt-bindings/clock/vf610-clock.h +++ b/include/dt-bindings/clock/vf610-clock.h @@ -195,6 +195,7 @@ #define VF610_CLK_WKPU 186 #define VF610_CLK_TCON0 187 #define VF610_CLK_TCON1 188 -#define VF610_CLK_END 189 +#define VF610_CLK_CAAM 189 +#define VF610_CLK_END 190 #endif /* __DT_BINDINGS_CLOCK_VF610_H */ diff --git a/include/dt-bindings/mux/mux-j721e-wiz.h b/include/dt-bindings/mux/mux-j721e-wiz.h new file mode 100644 index 000000000000..fd1c4ea9fc7f --- /dev/null +++ b/include/dt-bindings/mux/mux-j721e-wiz.h @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This header provides constants for J721E WIZ. + */ + +#ifndef _DT_BINDINGS_J721E_WIZ +#define _DT_BINDINGS_J721E_WIZ + +#define SERDES0_LANE0_QSGMII_LANE1 0x0 +#define SERDES0_LANE0_PCIE0_LANE0 0x1 +#define SERDES0_LANE0_USB3_0_SWAP 0x2 + +#define SERDES0_LANE1_QSGMII_LANE2 0x0 +#define SERDES0_LANE1_PCIE0_LANE1 0x1 +#define SERDES0_LANE1_USB3_0 0x2 + +#define SERDES1_LANE0_QSGMII_LANE3 0x0 +#define SERDES1_LANE0_PCIE1_LANE0 0x1 +#define SERDES1_LANE0_USB3_1_SWAP 0x2 +#define SERDES1_LANE0_SGMII_LANE0 0x3 + +#define SERDES1_LANE1_QSGMII_LANE4 0x0 +#define SERDES1_LANE1_PCIE1_LANE1 0x1 +#define SERDES1_LANE1_USB3_1 0x2 +#define SERDES1_LANE1_SGMII_LANE1 0x3 + +#define SERDES2_LANE0_PCIE2_LANE0 0x1 +#define SERDES2_LANE0_SGMII_LANE0 0x3 +#define SERDES2_LANE0_USB3_1_SWAP 0x2 + +#define SERDES2_LANE1_PCIE2_LANE1 0x1 +#define SERDES2_LANE1_USB3_1 0x2 +#define SERDES2_LANE1_SGMII_LANE1 0x3 + +#define SERDES3_LANE0_PCIE3_LANE0 0x1 +#define SERDES3_LANE0_USB3_0_SWAP 0x2 + +#define SERDES3_LANE1_PCIE3_LANE1 0x1 +#define SERDES3_LANE1_USB3_0 0x2 + +#define SERDES4_LANE0_EDP_LANE0 0x0 +#define SERDES4_LANE0_QSGMII_LANE5 0x2 + +#define SERDES4_LANE1_EDP_LANE1 0x0 +#define SERDES4_LANE1_QSGMII_LANE6 0x2 + +#define SERDES4_LANE2_EDP_LANE2 0x0 +#define SERDES4_LANE2_QSGMII_LANE7 0x2 + +#define SERDES4_LANE3_EDP_LANE3 0x0 +#define SERDES4_LANE3_QSGMII_LANE8 0x2 + +#endif /* _DT_BINDINGS_J721E_WIZ */ diff --git a/include/dt-bindings/pinctrl/k3.h b/include/dt-bindings/pinctrl/k3.h index 499de6216581..b0eea7cc6e23 100644 --- a/include/dt-bindings/pinctrl/k3.h +++ b/include/dt-bindings/pinctrl/k3.h @@ -3,7 +3,7 @@ * This header provides constants for pinctrl bindings for TI's K3 SoC * family. * - * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ + * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/ */ #ifndef _DT_BINDINGS_PINCTRL_TI_K3_H #define _DT_BINDINGS_PINCTRL_TI_K3_H diff --git a/include/dt-bindings/power/qcom-rpmpd.h b/include/dt-bindings/power/qcom-rpmpd.h index dc146e44228b..5e61eaf73bdd 100644 --- a/include/dt-bindings/power/qcom-rpmpd.h +++ b/include/dt-bindings/power/qcom-rpmpd.h @@ -55,6 +55,7 @@ #define RPMH_REGULATOR_LEVEL_MIN_SVS 48 #define RPMH_REGULATOR_LEVEL_LOW_SVS 64 #define RPMH_REGULATOR_LEVEL_SVS 128 +#define RPMH_REGULATOR_LEVEL_SVS_L0 144 #define RPMH_REGULATOR_LEVEL_SVS_L1 192 #define RPMH_REGULATOR_LEVEL_SVS_L2 224 #define RPMH_REGULATOR_LEVEL_NOM 256 diff --git a/include/linux/acpi.h b/include/linux/acpi.h index d661cd0ee64d..6d2c47489d90 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -905,6 +905,13 @@ static inline int acpi_dma_configure(struct device *dev, return 0; } +static inline int acpi_dma_configure_id(struct device *dev, + enum dev_dma_attr attr, + const u32 *input_id) +{ + return 0; +} + #define ACPI_PTR(_ptr) (NULL) static inline void acpi_device_set_enumerated(struct acpi_device *adev) diff --git a/include/linux/acpi_iort.h b/include/linux/acpi_iort.h index 8e7e2ec37f1b..20a32120bb88 100644 --- a/include/linux/acpi_iort.h +++ b/include/linux/acpi_iort.h @@ -28,27 +28,29 @@ void iort_deregister_domain_token(int trans_id); struct fwnode_handle *iort_find_domain_token(int trans_id); #ifdef CONFIG_ACPI_IORT void acpi_iort_init(void); -u32 iort_msi_map_rid(struct device *dev, u32 req_id); -struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id); +u32 iort_msi_map_id(struct device *dev, u32 id); +struct irq_domain *iort_get_device_domain(struct device *dev, u32 id, + enum irq_domain_bus_token bus_token); void acpi_configure_pmsi_domain(struct device *dev); int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id); /* IOMMU interface */ void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size); -const struct iommu_ops *iort_iommu_configure(struct device *dev); +const struct iommu_ops *iort_iommu_configure_id(struct device *dev, + const u32 *id_in); int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head); #else static inline void acpi_iort_init(void) { } -static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id) -{ return req_id; } -static inline struct irq_domain *iort_get_device_domain(struct device *dev, - u32 req_id) +static inline u32 iort_msi_map_id(struct device *dev, u32 id) +{ return id; } +static inline struct irq_domain *iort_get_device_domain( + struct device *dev, u32 id, enum irq_domain_bus_token bus_token) { return NULL; } static inline void acpi_configure_pmsi_domain(struct device *dev) { } /* IOMMU interface */ static inline void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size) { } -static inline const struct iommu_ops *iort_iommu_configure( - struct device *dev) +static inline const struct iommu_ops *iort_iommu_configure_id( + struct device *dev, const u32 *id_in) { return NULL; } static inline int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h index 0566cb3314ef..69b1dabe39dc 100644 --- a/include/linux/arch_topology.h +++ b/include/linux/arch_topology.h @@ -39,8 +39,8 @@ static inline unsigned long topology_get_thermal_pressure(int cpu) return per_cpu(thermal_pressure, cpu); } -void arch_set_thermal_pressure(struct cpumask *cpus, - unsigned long th_pressure); +void topology_set_thermal_pressure(const struct cpumask *cpus, + unsigned long th_pressure); struct cpu_topology { int thread_id; diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 8254e11ea857..15c706fb0a37 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -86,6 +86,28 @@ ARM_SMCCC_SMC_32, \ 0, 0x7fff) +/* Paravirtualised time calls (defined by ARM DEN0057A) */ +#define ARM_SMCCC_HV_PV_TIME_FEATURES \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD_HYP, \ + 0x20) + +#define ARM_SMCCC_HV_PV_TIME_ST \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD_HYP, \ + 0x21) + +/* + * Return codes defined in ARM DEN 0070A + * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C + */ +#define SMCCC_RET_SUCCESS 0 +#define SMCCC_RET_NOT_SUPPORTED -1 +#define SMCCC_RET_NOT_REQUIRED -2 +#define SMCCC_RET_INVALID_PARAMETER -3 + #ifndef __ASSEMBLY__ #include <linux/linkage.h> @@ -337,15 +359,6 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__) /* - * Return codes defined in ARM DEN 0070A - * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C - */ -#define SMCCC_RET_SUCCESS 0 -#define SMCCC_RET_NOT_SUPPORTED -1 -#define SMCCC_RET_NOT_REQUIRED -2 -#define SMCCC_RET_INVALID_PARAMETER -3 - -/* * Like arm_smccc_1_1* but always returns SMCCC_RET_NOT_SUPPORTED. * Used when the SMCCC conduit is not defined. The empty asm statement * avoids compiler warnings about unused variables. @@ -390,18 +403,5 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1, method; \ }) -/* Paravirtualised time calls (defined by ARM DEN0057A) */ -#define ARM_SMCCC_HV_PV_TIME_FEATURES \ - ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ - ARM_SMCCC_SMC_64, \ - ARM_SMCCC_OWNER_STANDARD_HYP, \ - 0x20) - -#define ARM_SMCCC_HV_PV_TIME_ST \ - ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ - ARM_SMCCC_SMC_64, \ - ARM_SMCCC_OWNER_STANDARD_HYP, \ - 0x21) - #endif /*__ASSEMBLY__*/ #endif /*__LINUX_ARM_SMCCC_H*/ diff --git a/include/linux/atomic-fallback.h b/include/linux/atomic-fallback.h index 2c4927bf7b8d..fd525c71d676 100644 --- a/include/linux/atomic-fallback.h +++ b/include/linux/atomic-fallback.h @@ -77,6 +77,9 @@ #endif /* cmpxchg64_relaxed */ +#define arch_atomic_read atomic_read +#define arch_atomic_read_acquire atomic_read_acquire + #ifndef atomic_read_acquire static __always_inline int atomic_read_acquire(const atomic_t *v) @@ -86,6 +89,9 @@ atomic_read_acquire(const atomic_t *v) #define atomic_read_acquire atomic_read_acquire #endif +#define arch_atomic_set atomic_set +#define arch_atomic_set_release atomic_set_release + #ifndef atomic_set_release static __always_inline void atomic_set_release(atomic_t *v, int i) @@ -95,6 +101,13 @@ atomic_set_release(atomic_t *v, int i) #define atomic_set_release atomic_set_release #endif +#define arch_atomic_add atomic_add + +#define arch_atomic_add_return atomic_add_return +#define arch_atomic_add_return_acquire atomic_add_return_acquire +#define arch_atomic_add_return_release atomic_add_return_release +#define arch_atomic_add_return_relaxed atomic_add_return_relaxed + #ifndef atomic_add_return_relaxed #define atomic_add_return_acquire atomic_add_return #define atomic_add_return_release atomic_add_return @@ -137,6 +150,11 @@ atomic_add_return(int i, atomic_t *v) #endif /* atomic_add_return_relaxed */ +#define arch_atomic_fetch_add atomic_fetch_add +#define arch_atomic_fetch_add_acquire atomic_fetch_add_acquire +#define arch_atomic_fetch_add_release atomic_fetch_add_release +#define arch_atomic_fetch_add_relaxed atomic_fetch_add_relaxed + #ifndef atomic_fetch_add_relaxed #define atomic_fetch_add_acquire atomic_fetch_add #define atomic_fetch_add_release atomic_fetch_add @@ -179,6 +197,13 @@ atomic_fetch_add(int i, atomic_t *v) #endif /* atomic_fetch_add_relaxed */ +#define arch_atomic_sub atomic_sub + +#define arch_atomic_sub_return atomic_sub_return +#define arch_atomic_sub_return_acquire atomic_sub_return_acquire +#define arch_atomic_sub_return_release atomic_sub_return_release +#define arch_atomic_sub_return_relaxed atomic_sub_return_relaxed + #ifndef atomic_sub_return_relaxed #define atomic_sub_return_acquire atomic_sub_return #define atomic_sub_return_release atomic_sub_return @@ -221,6 +246,11 @@ atomic_sub_return(int i, atomic_t *v) #endif /* atomic_sub_return_relaxed */ +#define arch_atomic_fetch_sub atomic_fetch_sub +#define arch_atomic_fetch_sub_acquire atomic_fetch_sub_acquire +#define arch_atomic_fetch_sub_release atomic_fetch_sub_release +#define arch_atomic_fetch_sub_relaxed atomic_fetch_sub_relaxed + #ifndef atomic_fetch_sub_relaxed #define atomic_fetch_sub_acquire atomic_fetch_sub #define atomic_fetch_sub_release atomic_fetch_sub @@ -263,6 +293,8 @@ atomic_fetch_sub(int i, atomic_t *v) #endif /* atomic_fetch_sub_relaxed */ +#define arch_atomic_inc atomic_inc + #ifndef atomic_inc static __always_inline void atomic_inc(atomic_t *v) @@ -272,6 +304,11 @@ atomic_inc(atomic_t *v) #define atomic_inc atomic_inc #endif +#define arch_atomic_inc_return atomic_inc_return +#define arch_atomic_inc_return_acquire atomic_inc_return_acquire +#define arch_atomic_inc_return_release atomic_inc_return_release +#define arch_atomic_inc_return_relaxed atomic_inc_return_relaxed + #ifndef atomic_inc_return_relaxed #ifdef atomic_inc_return #define atomic_inc_return_acquire atomic_inc_return @@ -353,6 +390,11 @@ atomic_inc_return(atomic_t *v) #endif /* atomic_inc_return_relaxed */ +#define arch_atomic_fetch_inc atomic_fetch_inc +#define arch_atomic_fetch_inc_acquire atomic_fetch_inc_acquire +#define arch_atomic_fetch_inc_release atomic_fetch_inc_release +#define arch_atomic_fetch_inc_relaxed atomic_fetch_inc_relaxed + #ifndef atomic_fetch_inc_relaxed #ifdef atomic_fetch_inc #define atomic_fetch_inc_acquire atomic_fetch_inc @@ -434,6 +476,8 @@ atomic_fetch_inc(atomic_t *v) #endif /* atomic_fetch_inc_relaxed */ +#define arch_atomic_dec atomic_dec + #ifndef atomic_dec static __always_inline void atomic_dec(atomic_t *v) @@ -443,6 +487,11 @@ atomic_dec(atomic_t *v) #define atomic_dec atomic_dec #endif +#define arch_atomic_dec_return atomic_dec_return +#define arch_atomic_dec_return_acquire atomic_dec_return_acquire +#define arch_atomic_dec_return_release atomic_dec_return_release +#define arch_atomic_dec_return_relaxed atomic_dec_return_relaxed + #ifndef atomic_dec_return_relaxed #ifdef atomic_dec_return #define atomic_dec_return_acquire atomic_dec_return @@ -524,6 +573,11 @@ atomic_dec_return(atomic_t *v) #endif /* atomic_dec_return_relaxed */ +#define arch_atomic_fetch_dec atomic_fetch_dec +#define arch_atomic_fetch_dec_acquire atomic_fetch_dec_acquire +#define arch_atomic_fetch_dec_release atomic_fetch_dec_release +#define arch_atomic_fetch_dec_relaxed atomic_fetch_dec_relaxed + #ifndef atomic_fetch_dec_relaxed #ifdef atomic_fetch_dec #define atomic_fetch_dec_acquire atomic_fetch_dec @@ -605,6 +659,13 @@ atomic_fetch_dec(atomic_t *v) #endif /* atomic_fetch_dec_relaxed */ +#define arch_atomic_and atomic_and + +#define arch_atomic_fetch_and atomic_fetch_and +#define arch_atomic_fetch_and_acquire atomic_fetch_and_acquire +#define arch_atomic_fetch_and_release atomic_fetch_and_release +#define arch_atomic_fetch_and_relaxed atomic_fetch_and_relaxed + #ifndef atomic_fetch_and_relaxed #define atomic_fetch_and_acquire atomic_fetch_and #define atomic_fetch_and_release atomic_fetch_and @@ -647,6 +708,8 @@ atomic_fetch_and(int i, atomic_t *v) #endif /* atomic_fetch_and_relaxed */ +#define arch_atomic_andnot atomic_andnot + #ifndef atomic_andnot static __always_inline void atomic_andnot(int i, atomic_t *v) @@ -656,6 +719,11 @@ atomic_andnot(int i, atomic_t *v) #define atomic_andnot atomic_andnot #endif +#define arch_atomic_fetch_andnot atomic_fetch_andnot +#define arch_atomic_fetch_andnot_acquire atomic_fetch_andnot_acquire +#define arch_atomic_fetch_andnot_release atomic_fetch_andnot_release +#define arch_atomic_fetch_andnot_relaxed atomic_fetch_andnot_relaxed + #ifndef atomic_fetch_andnot_relaxed #ifdef atomic_fetch_andnot #define atomic_fetch_andnot_acquire atomic_fetch_andnot @@ -737,6 +805,13 @@ atomic_fetch_andnot(int i, atomic_t *v) #endif /* atomic_fetch_andnot_relaxed */ +#define arch_atomic_or atomic_or + +#define arch_atomic_fetch_or atomic_fetch_or +#define arch_atomic_fetch_or_acquire atomic_fetch_or_acquire +#define arch_atomic_fetch_or_release atomic_fetch_or_release +#define arch_atomic_fetch_or_relaxed atomic_fetch_or_relaxed + #ifndef atomic_fetch_or_relaxed #define atomic_fetch_or_acquire atomic_fetch_or #define atomic_fetch_or_release atomic_fetch_or @@ -779,6 +854,13 @@ atomic_fetch_or(int i, atomic_t *v) #endif /* atomic_fetch_or_relaxed */ +#define arch_atomic_xor atomic_xor + +#define arch_atomic_fetch_xor atomic_fetch_xor +#define arch_atomic_fetch_xor_acquire atomic_fetch_xor_acquire +#define arch_atomic_fetch_xor_release atomic_fetch_xor_release +#define arch_atomic_fetch_xor_relaxed atomic_fetch_xor_relaxed + #ifndef atomic_fetch_xor_relaxed #define atomic_fetch_xor_acquire atomic_fetch_xor #define atomic_fetch_xor_release atomic_fetch_xor @@ -821,6 +903,11 @@ atomic_fetch_xor(int i, atomic_t *v) #endif /* atomic_fetch_xor_relaxed */ +#define arch_atomic_xchg atomic_xchg +#define arch_atomic_xchg_acquire atomic_xchg_acquire +#define arch_atomic_xchg_release atomic_xchg_release +#define arch_atomic_xchg_relaxed atomic_xchg_relaxed + #ifndef atomic_xchg_relaxed #define atomic_xchg_acquire atomic_xchg #define atomic_xchg_release atomic_xchg @@ -863,6 +950,11 @@ atomic_xchg(atomic_t *v, int i) #endif /* atomic_xchg_relaxed */ +#define arch_atomic_cmpxchg atomic_cmpxchg +#define arch_atomic_cmpxchg_acquire atomic_cmpxchg_acquire +#define arch_atomic_cmpxchg_release atomic_cmpxchg_release +#define arch_atomic_cmpxchg_relaxed atomic_cmpxchg_relaxed + #ifndef atomic_cmpxchg_relaxed #define atomic_cmpxchg_acquire atomic_cmpxchg #define atomic_cmpxchg_release atomic_cmpxchg @@ -905,6 +997,11 @@ atomic_cmpxchg(atomic_t *v, int old, int new) #endif /* atomic_cmpxchg_relaxed */ +#define arch_atomic_try_cmpxchg atomic_try_cmpxchg +#define arch_atomic_try_cmpxchg_acquire atomic_try_cmpxchg_acquire +#define arch_atomic_try_cmpxchg_release atomic_try_cmpxchg_release +#define arch_atomic_try_cmpxchg_relaxed atomic_try_cmpxchg_relaxed + #ifndef atomic_try_cmpxchg_relaxed #ifdef atomic_try_cmpxchg #define atomic_try_cmpxchg_acquire atomic_try_cmpxchg @@ -1002,6 +1099,8 @@ atomic_try_cmpxchg(atomic_t *v, int *old, int new) #endif /* atomic_try_cmpxchg_relaxed */ +#define arch_atomic_sub_and_test atomic_sub_and_test + #ifndef atomic_sub_and_test /** * atomic_sub_and_test - subtract value from variable and test result @@ -1020,6 +1119,8 @@ atomic_sub_and_test(int i, atomic_t *v) #define atomic_sub_and_test atomic_sub_and_test #endif +#define arch_atomic_dec_and_test atomic_dec_and_test + #ifndef atomic_dec_and_test /** * atomic_dec_and_test - decrement and test @@ -1037,6 +1138,8 @@ atomic_dec_and_test(atomic_t *v) #define atomic_dec_and_test atomic_dec_and_test #endif +#define arch_atomic_inc_and_test atomic_inc_and_test + #ifndef atomic_inc_and_test /** * atomic_inc_and_test - increment and test @@ -1054,6 +1157,8 @@ atomic_inc_and_test(atomic_t *v) #define atomic_inc_and_test atomic_inc_and_test #endif +#define arch_atomic_add_negative atomic_add_negative + #ifndef atomic_add_negative /** * atomic_add_negative - add and test if negative @@ -1072,6 +1177,8 @@ atomic_add_negative(int i, atomic_t *v) #define atomic_add_negative atomic_add_negative #endif +#define arch_atomic_fetch_add_unless atomic_fetch_add_unless + #ifndef atomic_fetch_add_unless /** * atomic_fetch_add_unless - add unless the number is already a given value @@ -1097,6 +1204,8 @@ atomic_fetch_add_unless(atomic_t *v, int a, int u) #define atomic_fetch_add_unless atomic_fetch_add_unless #endif +#define arch_atomic_add_unless atomic_add_unless + #ifndef atomic_add_unless /** * atomic_add_unless - add unless the number is already a given value @@ -1115,6 +1224,8 @@ atomic_add_unless(atomic_t *v, int a, int u) #define atomic_add_unless atomic_add_unless #endif +#define arch_atomic_inc_not_zero atomic_inc_not_zero + #ifndef atomic_inc_not_zero /** * atomic_inc_not_zero - increment unless the number is zero @@ -1131,6 +1242,8 @@ atomic_inc_not_zero(atomic_t *v) #define atomic_inc_not_zero atomic_inc_not_zero #endif +#define arch_atomic_inc_unless_negative atomic_inc_unless_negative + #ifndef atomic_inc_unless_negative static __always_inline bool atomic_inc_unless_negative(atomic_t *v) @@ -1147,6 +1260,8 @@ atomic_inc_unless_negative(atomic_t *v) #define atomic_inc_unless_negative atomic_inc_unless_negative #endif +#define arch_atomic_dec_unless_positive atomic_dec_unless_positive + #ifndef atomic_dec_unless_positive static __always_inline bool atomic_dec_unless_positive(atomic_t *v) @@ -1163,6 +1278,8 @@ atomic_dec_unless_positive(atomic_t *v) #define atomic_dec_unless_positive atomic_dec_unless_positive #endif +#define arch_atomic_dec_if_positive atomic_dec_if_positive + #ifndef atomic_dec_if_positive static __always_inline int atomic_dec_if_positive(atomic_t *v) @@ -1184,6 +1301,9 @@ atomic_dec_if_positive(atomic_t *v) #include <asm-generic/atomic64.h> #endif +#define arch_atomic64_read atomic64_read +#define arch_atomic64_read_acquire atomic64_read_acquire + #ifndef atomic64_read_acquire static __always_inline s64 atomic64_read_acquire(const atomic64_t *v) @@ -1193,6 +1313,9 @@ atomic64_read_acquire(const atomic64_t *v) #define atomic64_read_acquire atomic64_read_acquire #endif +#define arch_atomic64_set atomic64_set +#define arch_atomic64_set_release atomic64_set_release + #ifndef atomic64_set_release static __always_inline void atomic64_set_release(atomic64_t *v, s64 i) @@ -1202,6 +1325,13 @@ atomic64_set_release(atomic64_t *v, s64 i) #define atomic64_set_release atomic64_set_release #endif +#define arch_atomic64_add atomic64_add + +#define arch_atomic64_add_return atomic64_add_return +#define arch_atomic64_add_return_acquire atomic64_add_return_acquire +#define arch_atomic64_add_return_release atomic64_add_return_release +#define arch_atomic64_add_return_relaxed atomic64_add_return_relaxed + #ifndef atomic64_add_return_relaxed #define atomic64_add_return_acquire atomic64_add_return #define atomic64_add_return_release atomic64_add_return @@ -1244,6 +1374,11 @@ atomic64_add_return(s64 i, atomic64_t *v) #endif /* atomic64_add_return_relaxed */ +#define arch_atomic64_fetch_add atomic64_fetch_add +#define arch_atomic64_fetch_add_acquire atomic64_fetch_add_acquire +#define arch_atomic64_fetch_add_release atomic64_fetch_add_release +#define arch_atomic64_fetch_add_relaxed atomic64_fetch_add_relaxed + #ifndef atomic64_fetch_add_relaxed #define atomic64_fetch_add_acquire atomic64_fetch_add #define atomic64_fetch_add_release atomic64_fetch_add @@ -1286,6 +1421,13 @@ atomic64_fetch_add(s64 i, atomic64_t *v) #endif /* atomic64_fetch_add_relaxed */ +#define arch_atomic64_sub atomic64_sub + +#define arch_atomic64_sub_return atomic64_sub_return +#define arch_atomic64_sub_return_acquire atomic64_sub_return_acquire +#define arch_atomic64_sub_return_release atomic64_sub_return_release +#define arch_atomic64_sub_return_relaxed atomic64_sub_return_relaxed + #ifndef atomic64_sub_return_relaxed #define atomic64_sub_return_acquire atomic64_sub_return #define atomic64_sub_return_release atomic64_sub_return @@ -1328,6 +1470,11 @@ atomic64_sub_return(s64 i, atomic64_t *v) #endif /* atomic64_sub_return_relaxed */ +#define arch_atomic64_fetch_sub atomic64_fetch_sub +#define arch_atomic64_fetch_sub_acquire atomic64_fetch_sub_acquire +#define arch_atomic64_fetch_sub_release atomic64_fetch_sub_release +#define arch_atomic64_fetch_sub_relaxed atomic64_fetch_sub_relaxed + #ifndef atomic64_fetch_sub_relaxed #define atomic64_fetch_sub_acquire atomic64_fetch_sub #define atomic64_fetch_sub_release atomic64_fetch_sub @@ -1370,6 +1517,8 @@ atomic64_fetch_sub(s64 i, atomic64_t *v) #endif /* atomic64_fetch_sub_relaxed */ +#define arch_atomic64_inc atomic64_inc + #ifndef atomic64_inc static __always_inline void atomic64_inc(atomic64_t *v) @@ -1379,6 +1528,11 @@ atomic64_inc(atomic64_t *v) #define atomic64_inc atomic64_inc #endif +#define arch_atomic64_inc_return atomic64_inc_return +#define arch_atomic64_inc_return_acquire atomic64_inc_return_acquire +#define arch_atomic64_inc_return_release atomic64_inc_return_release +#define arch_atomic64_inc_return_relaxed atomic64_inc_return_relaxed + #ifndef atomic64_inc_return_relaxed #ifdef atomic64_inc_return #define atomic64_inc_return_acquire atomic64_inc_return @@ -1460,6 +1614,11 @@ atomic64_inc_return(atomic64_t *v) #endif /* atomic64_inc_return_relaxed */ +#define arch_atomic64_fetch_inc atomic64_fetch_inc +#define arch_atomic64_fetch_inc_acquire atomic64_fetch_inc_acquire +#define arch_atomic64_fetch_inc_release atomic64_fetch_inc_release +#define arch_atomic64_fetch_inc_relaxed atomic64_fetch_inc_relaxed + #ifndef atomic64_fetch_inc_relaxed #ifdef atomic64_fetch_inc #define atomic64_fetch_inc_acquire atomic64_fetch_inc @@ -1541,6 +1700,8 @@ atomic64_fetch_inc(atomic64_t *v) #endif /* atomic64_fetch_inc_relaxed */ +#define arch_atomic64_dec atomic64_dec + #ifndef atomic64_dec static __always_inline void atomic64_dec(atomic64_t *v) @@ -1550,6 +1711,11 @@ atomic64_dec(atomic64_t *v) #define atomic64_dec atomic64_dec #endif +#define arch_atomic64_dec_return atomic64_dec_return +#define arch_atomic64_dec_return_acquire atomic64_dec_return_acquire +#define arch_atomic64_dec_return_release atomic64_dec_return_release +#define arch_atomic64_dec_return_relaxed atomic64_dec_return_relaxed + #ifndef atomic64_dec_return_relaxed #ifdef atomic64_dec_return #define atomic64_dec_return_acquire atomic64_dec_return @@ -1631,6 +1797,11 @@ atomic64_dec_return(atomic64_t *v) #endif /* atomic64_dec_return_relaxed */ +#define arch_atomic64_fetch_dec atomic64_fetch_dec +#define arch_atomic64_fetch_dec_acquire atomic64_fetch_dec_acquire +#define arch_atomic64_fetch_dec_release atomic64_fetch_dec_release +#define arch_atomic64_fetch_dec_relaxed atomic64_fetch_dec_relaxed + #ifndef atomic64_fetch_dec_relaxed #ifdef atomic64_fetch_dec #define atomic64_fetch_dec_acquire atomic64_fetch_dec @@ -1712,6 +1883,13 @@ atomic64_fetch_dec(atomic64_t *v) #endif /* atomic64_fetch_dec_relaxed */ +#define arch_atomic64_and atomic64_and + +#define arch_atomic64_fetch_and atomic64_fetch_and +#define arch_atomic64_fetch_and_acquire atomic64_fetch_and_acquire +#define arch_atomic64_fetch_and_release atomic64_fetch_and_release +#define arch_atomic64_fetch_and_relaxed atomic64_fetch_and_relaxed + #ifndef atomic64_fetch_and_relaxed #define atomic64_fetch_and_acquire atomic64_fetch_and #define atomic64_fetch_and_release atomic64_fetch_and @@ -1754,6 +1932,8 @@ atomic64_fetch_and(s64 i, atomic64_t *v) #endif /* atomic64_fetch_and_relaxed */ +#define arch_atomic64_andnot atomic64_andnot + #ifndef atomic64_andnot static __always_inline void atomic64_andnot(s64 i, atomic64_t *v) @@ -1763,6 +1943,11 @@ atomic64_andnot(s64 i, atomic64_t *v) #define atomic64_andnot atomic64_andnot #endif +#define arch_atomic64_fetch_andnot atomic64_fetch_andnot +#define arch_atomic64_fetch_andnot_acquire atomic64_fetch_andnot_acquire +#define arch_atomic64_fetch_andnot_release atomic64_fetch_andnot_release +#define arch_atomic64_fetch_andnot_relaxed atomic64_fetch_andnot_relaxed + #ifndef atomic64_fetch_andnot_relaxed #ifdef atomic64_fetch_andnot #define atomic64_fetch_andnot_acquire atomic64_fetch_andnot @@ -1844,6 +2029,13 @@ atomic64_fetch_andnot(s64 i, atomic64_t *v) #endif /* atomic64_fetch_andnot_relaxed */ +#define arch_atomic64_or atomic64_or + +#define arch_atomic64_fetch_or atomic64_fetch_or +#define arch_atomic64_fetch_or_acquire atomic64_fetch_or_acquire +#define arch_atomic64_fetch_or_release atomic64_fetch_or_release +#define arch_atomic64_fetch_or_relaxed atomic64_fetch_or_relaxed + #ifndef atomic64_fetch_or_relaxed #define atomic64_fetch_or_acquire atomic64_fetch_or #define atomic64_fetch_or_release atomic64_fetch_or @@ -1886,6 +2078,13 @@ atomic64_fetch_or(s64 i, atomic64_t *v) #endif /* atomic64_fetch_or_relaxed */ +#define arch_atomic64_xor atomic64_xor + +#define arch_atomic64_fetch_xor atomic64_fetch_xor +#define arch_atomic64_fetch_xor_acquire atomic64_fetch_xor_acquire +#define arch_atomic64_fetch_xor_release atomic64_fetch_xor_release +#define arch_atomic64_fetch_xor_relaxed atomic64_fetch_xor_relaxed + #ifndef atomic64_fetch_xor_relaxed #define atomic64_fetch_xor_acquire atomic64_fetch_xor #define atomic64_fetch_xor_release atomic64_fetch_xor @@ -1928,6 +2127,11 @@ atomic64_fetch_xor(s64 i, atomic64_t *v) #endif /* atomic64_fetch_xor_relaxed */ +#define arch_atomic64_xchg atomic64_xchg +#define arch_atomic64_xchg_acquire atomic64_xchg_acquire +#define arch_atomic64_xchg_release atomic64_xchg_release +#define arch_atomic64_xchg_relaxed atomic64_xchg_relaxed + #ifndef atomic64_xchg_relaxed #define atomic64_xchg_acquire atomic64_xchg #define atomic64_xchg_release atomic64_xchg @@ -1970,6 +2174,11 @@ atomic64_xchg(atomic64_t *v, s64 i) #endif /* atomic64_xchg_relaxed */ +#define arch_atomic64_cmpxchg atomic64_cmpxchg +#define arch_atomic64_cmpxchg_acquire atomic64_cmpxchg_acquire +#define arch_atomic64_cmpxchg_release atomic64_cmpxchg_release +#define arch_atomic64_cmpxchg_relaxed atomic64_cmpxchg_relaxed + #ifndef atomic64_cmpxchg_relaxed #define atomic64_cmpxchg_acquire atomic64_cmpxchg #define atomic64_cmpxchg_release atomic64_cmpxchg @@ -2012,6 +2221,11 @@ atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new) #endif /* atomic64_cmpxchg_relaxed */ +#define arch_atomic64_try_cmpxchg atomic64_try_cmpxchg +#define arch_atomic64_try_cmpxchg_acquire atomic64_try_cmpxchg_acquire +#define arch_atomic64_try_cmpxchg_release atomic64_try_cmpxchg_release +#define arch_atomic64_try_cmpxchg_relaxed atomic64_try_cmpxchg_relaxed + #ifndef atomic64_try_cmpxchg_relaxed #ifdef atomic64_try_cmpxchg #define atomic64_try_cmpxchg_acquire atomic64_try_cmpxchg @@ -2109,6 +2323,8 @@ atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new) #endif /* atomic64_try_cmpxchg_relaxed */ +#define arch_atomic64_sub_and_test atomic64_sub_and_test + #ifndef atomic64_sub_and_test /** * atomic64_sub_and_test - subtract value from variable and test result @@ -2127,6 +2343,8 @@ atomic64_sub_and_test(s64 i, atomic64_t *v) #define atomic64_sub_and_test atomic64_sub_and_test #endif +#define arch_atomic64_dec_and_test atomic64_dec_and_test + #ifndef atomic64_dec_and_test /** * atomic64_dec_and_test - decrement and test @@ -2144,6 +2362,8 @@ atomic64_dec_and_test(atomic64_t *v) #define atomic64_dec_and_test atomic64_dec_and_test #endif +#define arch_atomic64_inc_and_test atomic64_inc_and_test + #ifndef atomic64_inc_and_test /** * atomic64_inc_and_test - increment and test @@ -2161,6 +2381,8 @@ atomic64_inc_and_test(atomic64_t *v) #define atomic64_inc_and_test atomic64_inc_and_test #endif +#define arch_atomic64_add_negative atomic64_add_negative + #ifndef atomic64_add_negative /** * atomic64_add_negative - add and test if negative @@ -2179,6 +2401,8 @@ atomic64_add_negative(s64 i, atomic64_t *v) #define atomic64_add_negative atomic64_add_negative #endif +#define arch_atomic64_fetch_add_unless atomic64_fetch_add_unless + #ifndef atomic64_fetch_add_unless /** * atomic64_fetch_add_unless - add unless the number is already a given value @@ -2204,6 +2428,8 @@ atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u) #define atomic64_fetch_add_unless atomic64_fetch_add_unless #endif +#define arch_atomic64_add_unless atomic64_add_unless + #ifndef atomic64_add_unless /** * atomic64_add_unless - add unless the number is already a given value @@ -2222,6 +2448,8 @@ atomic64_add_unless(atomic64_t *v, s64 a, s64 u) #define atomic64_add_unless atomic64_add_unless #endif +#define arch_atomic64_inc_not_zero atomic64_inc_not_zero + #ifndef atomic64_inc_not_zero /** * atomic64_inc_not_zero - increment unless the number is zero @@ -2238,6 +2466,8 @@ atomic64_inc_not_zero(atomic64_t *v) #define atomic64_inc_not_zero atomic64_inc_not_zero #endif +#define arch_atomic64_inc_unless_negative atomic64_inc_unless_negative + #ifndef atomic64_inc_unless_negative static __always_inline bool atomic64_inc_unless_negative(atomic64_t *v) @@ -2254,6 +2484,8 @@ atomic64_inc_unless_negative(atomic64_t *v) #define atomic64_inc_unless_negative atomic64_inc_unless_negative #endif +#define arch_atomic64_dec_unless_positive atomic64_dec_unless_positive + #ifndef atomic64_dec_unless_positive static __always_inline bool atomic64_dec_unless_positive(atomic64_t *v) @@ -2270,6 +2502,8 @@ atomic64_dec_unless_positive(atomic64_t *v) #define atomic64_dec_unless_positive atomic64_dec_unless_positive #endif +#define arch_atomic64_dec_if_positive atomic64_dec_if_positive + #ifndef atomic64_dec_if_positive static __always_inline s64 atomic64_dec_if_positive(atomic64_t *v) @@ -2288,4 +2522,4 @@ atomic64_dec_if_positive(atomic64_t *v) #endif #endif /* _LINUX_ATOMIC_FALLBACK_H */ -// 1fac0941c79bf0ae100723cc2ac9b94061f0b67a +// 9d95b56f98d82a2a26c7b79ccdd0c47572d50a6f diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h index 90a7e844a098..fff9367a6348 100644 --- a/include/linux/backing-dev-defs.h +++ b/include/linux/backing-dev-defs.h @@ -33,8 +33,6 @@ enum wb_congested_state { WB_sync_congested, /* The sync queue is getting full */ }; -typedef int (congested_fn)(void *, int); - enum wb_stat_item { WB_RECLAIMABLE, WB_WRITEBACK, @@ -88,26 +86,6 @@ struct wb_completion { struct wb_completion cmpl = WB_COMPLETION_INIT(bdi) /* - * For cgroup writeback, multiple wb's may map to the same blkcg. Those - * wb's can operate mostly independently but should share the congested - * state. To facilitate such sharing, the congested state is tracked using - * the following struct which is created on demand, indexed by blkcg ID on - * its bdi, and refcounted. - */ -struct bdi_writeback_congested { - unsigned long state; /* WB_[a]sync_congested flags */ - refcount_t refcnt; /* nr of attached wb's and blkg */ - -#ifdef CONFIG_CGROUP_WRITEBACK - struct backing_dev_info *__bdi; /* the associated bdi, set to NULL - * on bdi unregistration. For memcg-wb - * internal use only! */ - int blkcg_id; /* ID of the associated blkcg */ - struct rb_node rb_node; /* on bdi->cgwb_congestion_tree */ -#endif -}; - -/* * Each wb (bdi_writeback) can perform writeback operations, is measured * and throttled, independently. Without cgroup writeback, each bdi * (bdi_writeback) is served by its embedded bdi->wb. @@ -140,7 +118,7 @@ struct bdi_writeback { struct percpu_counter stat[NR_WB_STAT_ITEMS]; - struct bdi_writeback_congested *congested; + unsigned long congested; /* WB_[a]sync_congested flags */ unsigned long bw_time_stamp; /* last time write bw is updated */ unsigned long dirtied_stamp; @@ -190,8 +168,6 @@ struct backing_dev_info { struct list_head bdi_list; unsigned long ra_pages; /* max readahead in PAGE_SIZE units */ unsigned long io_pages; /* max allowed IO size */ - congested_fn *congested_fn; /* Function pointer if device is md/dm */ - void *congested_data; /* Pointer to aux data for congested func */ struct kref refcnt; /* Reference counter for the structure */ unsigned int capabilities; /* Device capabilities */ @@ -208,11 +184,8 @@ struct backing_dev_info { struct list_head wb_list; /* list of all wbs */ #ifdef CONFIG_CGROUP_WRITEBACK struct radix_tree_root cgwb_tree; /* radix tree of active cgroup wbs */ - struct rb_root cgwb_congested_tree; /* their congested states */ struct mutex cgwb_release_mutex; /* protect shutdown of wb structs */ struct rw_semaphore wb_switch_rwsem; /* no cgwb switch while syncing */ -#else - struct bdi_writeback_congested *wb_congested; #endif wait_queue_head_t wb_waitq; @@ -232,18 +205,8 @@ enum { BLK_RW_SYNC = 1, }; -void clear_wb_congested(struct bdi_writeback_congested *congested, int sync); -void set_wb_congested(struct bdi_writeback_congested *congested, int sync); - -static inline void clear_bdi_congested(struct backing_dev_info *bdi, int sync) -{ - clear_wb_congested(bdi->wb.congested, sync); -} - -static inline void set_bdi_congested(struct backing_dev_info *bdi, int sync) -{ - set_wb_congested(bdi->wb.congested, sync); -} +void clear_bdi_congested(struct backing_dev_info *bdi, int sync); +void set_bdi_congested(struct backing_dev_info *bdi, int sync); struct wb_lock_cookie { bool locked; diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 6b3504bf7a42..0b06b2d26c9a 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -169,11 +169,7 @@ static inline struct backing_dev_info *inode_to_bdi(struct inode *inode) static inline int wb_congested(struct bdi_writeback *wb, int cong_bits) { - struct backing_dev_info *bdi = wb->bdi; - - if (bdi->congested_fn) - return bdi->congested_fn(bdi->congested_data, cong_bits); - return wb->congested->state & cong_bits; + return wb->congested & cong_bits; } long congestion_wait(int sync, long timeout); @@ -224,9 +220,6 @@ static inline int bdi_sched_wait(void *word) #ifdef CONFIG_CGROUP_WRITEBACK -struct bdi_writeback_congested * -wb_congested_get_create(struct backing_dev_info *bdi, int blkcg_id, gfp_t gfp); -void wb_congested_put(struct bdi_writeback_congested *congested); struct bdi_writeback *wb_get_lookup(struct backing_dev_info *bdi, struct cgroup_subsys_state *memcg_css); struct bdi_writeback *wb_get_create(struct backing_dev_info *bdi, @@ -404,19 +397,6 @@ static inline bool inode_cgwb_enabled(struct inode *inode) return false; } -static inline struct bdi_writeback_congested * -wb_congested_get_create(struct backing_dev_info *bdi, int blkcg_id, gfp_t gfp) -{ - refcount_inc(&bdi->wb_congested->refcnt); - return bdi->wb_congested; -} - -static inline void wb_congested_put(struct bdi_writeback_congested *congested) -{ - if (refcount_dec_and_test(&congested->refcnt)) - kfree(congested); -} - static inline struct bdi_writeback *wb_find_current(struct backing_dev_info *bdi) { return &bdi->wb; diff --git a/include/linux/bio.h b/include/linux/bio.h index 91676d4b2dfe..c6d765382926 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -8,8 +8,6 @@ #include <linux/highmem.h> #include <linux/mempool.h> #include <linux/ioprio.h> - -#ifdef CONFIG_BLOCK /* struct bio, bio_vec and BIO_* flags are defined in blk_types.h */ #include <linux/blk_types.h> @@ -491,21 +489,12 @@ do { \ #define bio_dev(bio) \ disk_devt((bio)->bi_disk) -#if defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP) -void bio_associate_blkg_from_page(struct bio *bio, struct page *page); -#else -static inline void bio_associate_blkg_from_page(struct bio *bio, - struct page *page) { } -#endif - #ifdef CONFIG_BLK_CGROUP -void bio_disassociate_blkg(struct bio *bio); void bio_associate_blkg(struct bio *bio); void bio_associate_blkg_from_css(struct bio *bio, struct cgroup_subsys_state *css); void bio_clone_blkg_association(struct bio *dst, struct bio *src); #else /* CONFIG_BLK_CGROUP */ -static inline void bio_disassociate_blkg(struct bio *bio) { } static inline void bio_associate_blkg(struct bio *bio) { } static inline void bio_associate_blkg_from_css(struct bio *bio, struct cgroup_subsys_state *css) @@ -824,5 +813,4 @@ static inline void bio_set_polled(struct bio *bio, struct kiocb *kiocb) bio->bi_opf |= REQ_NOWAIT; } -#endif /* CONFIG_BLOCK */ #endif /* __LINUX_BIO_H */ diff --git a/include/linux/bits.h b/include/linux/bits.h index 4671fbf28842..7f475d59a097 100644 --- a/include/linux/bits.h +++ b/include/linux/bits.h @@ -18,8 +18,7 @@ * position @h. For example * GENMASK_ULL(39, 21) gives us the 64bit vector 0x000000ffffe00000. */ -#if !defined(__ASSEMBLY__) && \ - (!defined(CONFIG_CC_IS_GCC) || CONFIG_GCC_VERSION >= 49000) +#if !defined(__ASSEMBLY__) #include <linux/build_bug.h> #define GENMASK_INPUT_CHECK(h, l) \ (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \ diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h index a57ebe2f00ab..c8fc9792ac77 100644 --- a/include/linux/blk-cgroup.h +++ b/include/linux/blk-cgroup.h @@ -109,12 +109,6 @@ struct blkcg_gq { struct hlist_node blkcg_node; struct blkcg *blkcg; - /* - * Each blkg gets congested separately and the congestion state is - * propagated to the matching bdi_writeback_congested. - */ - struct bdi_writeback_congested *wb_congested; - /* all non-root blkcg_gq's are guaranteed to have access to parent */ struct blkcg_gq *parent; @@ -183,10 +177,6 @@ extern bool blkcg_debug_stats; struct blkcg_gq *blkg_lookup_slowpath(struct blkcg *blkcg, struct request_queue *q, bool update_hint); -struct blkcg_gq *__blkg_lookup_create(struct blkcg *blkcg, - struct request_queue *q); -struct blkcg_gq *blkg_lookup_create(struct blkcg *blkcg, - struct request_queue *q); int blkcg_init_queue(struct request_queue *q); void blkcg_exit_queue(struct request_queue *q); @@ -481,32 +471,6 @@ static inline bool blkg_tryget(struct blkcg_gq *blkg) } /** - * blkg_tryget_closest - try and get a blkg ref on the closet blkg - * @blkg: blkg to get - * - * This needs to be called rcu protected. As the failure mode here is to walk - * up the blkg tree, this ensure that the blkg->parent pointers are always - * valid. This returns the blkg that it ended up taking a reference on or %NULL - * if no reference was taken. - */ -static inline struct blkcg_gq *blkg_tryget_closest(struct blkcg_gq *blkg) -{ - struct blkcg_gq *ret_blkg = NULL; - - WARN_ON_ONCE(!rcu_read_lock_held()); - - while (blkg) { - if (blkg_tryget(blkg)) { - ret_blkg = blkg; - break; - } - blkg = blkg->parent; - } - - return ret_blkg; -} - -/** * blkg_put - put a blkg reference * @blkg: blkg to put */ @@ -547,14 +511,6 @@ static inline void blkg_put(struct blkcg_gq *blkg) if (((d_blkg) = __blkg_lookup(css_to_blkcg(pos_css), \ (p_blkg)->q, false))) -#ifdef CONFIG_BLK_DEV_THROTTLING -extern bool blk_throtl_bio(struct request_queue *q, struct blkcg_gq *blkg, - struct bio *bio); -#else -static inline bool blk_throtl_bio(struct request_queue *q, struct blkcg_gq *blkg, - struct bio *bio) { return false; } -#endif - bool __blkcg_punt_bio_submit(struct bio *bio); static inline bool blkcg_punt_bio_submit(struct bio *bio) @@ -570,65 +526,6 @@ static inline void blkcg_bio_issue_init(struct bio *bio) bio_issue_init(&bio->bi_issue, bio_sectors(bio)); } -static inline bool blkcg_bio_issue_check(struct request_queue *q, - struct bio *bio) -{ - struct blkcg_gq *blkg; - bool throtl = false; - - rcu_read_lock(); - - if (!bio->bi_blkg) { - char b[BDEVNAME_SIZE]; - - WARN_ONCE(1, - "no blkg associated for bio on block-device: %s\n", - bio_devname(bio, b)); - bio_associate_blkg(bio); - } - - blkg = bio->bi_blkg; - - throtl = blk_throtl_bio(q, blkg, bio); - - if (!throtl) { - struct blkg_iostat_set *bis; - int rwd, cpu; - - if (op_is_discard(bio->bi_opf)) - rwd = BLKG_IOSTAT_DISCARD; - else if (op_is_write(bio->bi_opf)) - rwd = BLKG_IOSTAT_WRITE; - else - rwd = BLKG_IOSTAT_READ; - - cpu = get_cpu(); - bis = per_cpu_ptr(blkg->iostat_cpu, cpu); - u64_stats_update_begin(&bis->sync); - - /* - * If the bio is flagged with BIO_CGROUP_ACCT it means this is a - * split bio and we would have already accounted for the size of - * the bio. - */ - if (!bio_flagged(bio, BIO_CGROUP_ACCT)) { - bio_set_flag(bio, BIO_CGROUP_ACCT); - bis->cur.bytes[rwd] += bio->bi_iter.bi_size; - } - bis->cur.ios[rwd]++; - - u64_stats_update_end(&bis->sync); - if (cgroup_subsys_on_dfl(io_cgrp_subsys)) - cgroup_rstat_updated(blkg->blkcg->css.cgroup, cpu); - put_cpu(); - } - - blkcg_bio_issue_init(bio); - - rcu_read_unlock(); - return !throtl; -} - static inline void blkcg_use_delay(struct blkcg_gq *blkg) { if (WARN_ON_ONCE(atomic_read(&blkg->use_delay) < 0)) @@ -702,6 +599,7 @@ static inline void blkcg_clear_delay(struct blkcg_gq *blkg) atomic_dec(&blkg->blkcg->css.cgroup->congestion_count); } +void blk_cgroup_bio_start(struct bio *bio); void blkcg_add_delay(struct blkcg_gq *blkg, u64 now, u64 delta); void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay); void blkcg_maybe_throttle_current(void); @@ -755,8 +653,7 @@ static inline void blkg_put(struct blkcg_gq *blkg) { } static inline bool blkcg_punt_bio_submit(struct bio *bio) { return false; } static inline void blkcg_bio_issue_init(struct bio *bio) { } -static inline bool blkcg_bio_issue_check(struct request_queue *q, - struct bio *bio) { return true; } +static inline void blk_cgroup_bio_start(struct bio *bio) { } #define blk_queue_for_each_rl(rl, q) \ for ((rl) = &(q)->root_rl; (rl); (rl) = NULL) diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index d6fcae17da5a..9d2d5ad367a4 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -267,27 +267,9 @@ struct blk_mq_queue_data { bool last; }; -typedef blk_status_t (queue_rq_fn)(struct blk_mq_hw_ctx *, - const struct blk_mq_queue_data *); -typedef void (commit_rqs_fn)(struct blk_mq_hw_ctx *); -typedef bool (get_budget_fn)(struct blk_mq_hw_ctx *); -typedef void (put_budget_fn)(struct blk_mq_hw_ctx *); -typedef enum blk_eh_timer_return (timeout_fn)(struct request *, bool); -typedef int (init_hctx_fn)(struct blk_mq_hw_ctx *, void *, unsigned int); -typedef void (exit_hctx_fn)(struct blk_mq_hw_ctx *, unsigned int); -typedef int (init_request_fn)(struct blk_mq_tag_set *set, struct request *, - unsigned int, unsigned int); -typedef void (exit_request_fn)(struct blk_mq_tag_set *set, struct request *, - unsigned int); - typedef bool (busy_iter_fn)(struct blk_mq_hw_ctx *, struct request *, void *, bool); typedef bool (busy_tag_iter_fn)(struct request *, void *, bool); -typedef int (poll_fn)(struct blk_mq_hw_ctx *); -typedef int (map_queues_fn)(struct blk_mq_tag_set *set); -typedef bool (busy_fn)(struct request_queue *); -typedef void (complete_fn)(struct request *); -typedef void (cleanup_rq_fn)(struct request *); /** * struct blk_mq_ops - Callback functions that implements block driver @@ -297,7 +279,8 @@ struct blk_mq_ops { /** * @queue_rq: Queue a new request from block IO. */ - queue_rq_fn *queue_rq; + blk_status_t (*queue_rq)(struct blk_mq_hw_ctx *, + const struct blk_mq_queue_data *); /** * @commit_rqs: If a driver uses bd->last to judge when to submit @@ -306,7 +289,7 @@ struct blk_mq_ops { * purpose of kicking the hardware (which the last request otherwise * would have done). */ - commit_rqs_fn *commit_rqs; + void (*commit_rqs)(struct blk_mq_hw_ctx *); /** * @get_budget: Reserve budget before queue request, once .queue_rq is @@ -314,37 +297,38 @@ struct blk_mq_ops { * reserved budget. Also we have to handle failure case * of .get_budget for avoiding I/O deadlock. */ - get_budget_fn *get_budget; + bool (*get_budget)(struct request_queue *); + /** * @put_budget: Release the reserved budget. */ - put_budget_fn *put_budget; + void (*put_budget)(struct request_queue *); /** * @timeout: Called on request timeout. */ - timeout_fn *timeout; + enum blk_eh_timer_return (*timeout)(struct request *, bool); /** * @poll: Called to poll for completion of a specific tag. */ - poll_fn *poll; + int (*poll)(struct blk_mq_hw_ctx *); /** * @complete: Mark the request as complete. */ - complete_fn *complete; + void (*complete)(struct request *); /** * @init_hctx: Called when the block layer side of a hardware queue has * been set up, allowing the driver to allocate/init matching * structures. */ - init_hctx_fn *init_hctx; + int (*init_hctx)(struct blk_mq_hw_ctx *, void *, unsigned int); /** * @exit_hctx: Ditto for exit/teardown. */ - exit_hctx_fn *exit_hctx; + void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int); /** * @init_request: Called for every command allocated by the block layer @@ -353,11 +337,13 @@ struct blk_mq_ops { * Tag greater than or equal to queue_depth is for setting up * flush request. */ - init_request_fn *init_request; + int (*init_request)(struct blk_mq_tag_set *set, struct request *, + unsigned int, unsigned int); /** * @exit_request: Ditto for exit/teardown. */ - exit_request_fn *exit_request; + void (*exit_request)(struct blk_mq_tag_set *set, struct request *, + unsigned int); /** * @initialize_rq_fn: Called from inside blk_get_request(). @@ -368,18 +354,18 @@ struct blk_mq_ops { * @cleanup_rq: Called before freeing one request which isn't completed * yet, and usually for freeing the driver private data. */ - cleanup_rq_fn *cleanup_rq; + void (*cleanup_rq)(struct request *); /** * @busy: If set, returns whether or not this queue currently is busy. */ - busy_fn *busy; + bool (*busy)(struct request_queue *); /** * @map_queues: This allows drivers specify their own queue mapping by * overriding the setup-time function that builds the mq_map. */ - map_queues_fn *map_queues; + int (*map_queues)(struct blk_mq_tag_set *set); #ifdef CONFIG_BLK_DEBUG_FS /** @@ -447,8 +433,6 @@ enum { BLK_MQ_REQ_NOWAIT = (__force blk_mq_req_flags_t)(1 << 0), /* allocate from reserved pool */ BLK_MQ_REQ_RESERVED = (__force blk_mq_req_flags_t)(1 << 1), - /* allocate internal/sched tag */ - BLK_MQ_REQ_INTERNAL = (__force blk_mq_req_flags_t)(1 << 2), /* set RQF_PREEMPT */ BLK_MQ_REQ_PREEMPT = (__force blk_mq_req_flags_t)(1 << 3), }; @@ -503,8 +487,8 @@ void __blk_mq_end_request(struct request *rq, blk_status_t error); void blk_mq_requeue_request(struct request *rq, bool kick_requeue_list); void blk_mq_kick_requeue_list(struct request_queue *q); void blk_mq_delay_kick_requeue_list(struct request_queue *q, unsigned long msecs); -bool blk_mq_complete_request(struct request *rq); -void blk_mq_force_complete_rq(struct request *rq); +void blk_mq_complete_request(struct request *rq); +bool blk_mq_complete_request_remote(struct request *rq); bool blk_mq_bio_list_merge(struct request_queue *q, struct list_head *list, struct bio *bio, unsigned int nr_segs); bool blk_mq_queue_stopped(struct request_queue *q); @@ -537,6 +521,15 @@ void blk_mq_quiesce_queue_nowait(struct request_queue *q); unsigned int blk_mq_rq_cpu(struct request *rq); +bool __blk_should_fake_timeout(struct request_queue *q); +static inline bool blk_should_fake_timeout(struct request_queue *q) +{ + if (IS_ENABLED(CONFIG_FAIL_IO_TIMEOUT) && + test_bit(QUEUE_FLAG_FAIL_IO, &q->queue_flags)) + return __blk_should_fake_timeout(q); + return false; +} + /** * blk_mq_rq_from_pdu - cast a PDU to a request * @pdu: the PDU (Protocol Data Unit) to be casted @@ -589,6 +582,6 @@ static inline void blk_mq_cleanup_rq(struct request *rq) rq->q->mq_ops->cleanup_rq(rq); } -blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio); +blk_qc_t blk_mq_submit_bio(struct bio *bio); #endif diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index ccb895f911b1..4ecf4fed171f 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -14,12 +14,39 @@ struct bio_set; struct bio; struct bio_integrity_payload; struct page; -struct block_device; struct io_context; struct cgroup_subsys_state; typedef void (bio_end_io_t) (struct bio *); struct bio_crypt_ctx; +struct block_device { + dev_t bd_dev; /* not a kdev_t - it's a search key */ + int bd_openers; + struct inode * bd_inode; /* will die */ + struct super_block * bd_super; + struct mutex bd_mutex; /* open/close mutex */ + void * bd_claiming; + void * bd_holder; + int bd_holders; + bool bd_write_holder; +#ifdef CONFIG_SYSFS + struct list_head bd_holder_disks; +#endif + struct block_device * bd_contains; + u8 bd_partno; + struct hd_struct * bd_part; + /* number of times partitions within this device have been opened. */ + unsigned bd_part_count; + int bd_invalidated; + struct gendisk * bd_disk; + struct backing_dev_info *bd_bdi; + + /* The counter of freeze processes */ + int bd_fsfreeze_count; + /* Mutex for freeze */ + struct mutex bd_fsfreeze_mutex; +} __randomize_layout; + /* * Block error status values. See block/blk-core:blk_errors for the details. * Alpha cannot write a byte atomically, so we need to use 32-bit value. @@ -300,12 +327,8 @@ enum req_opf { REQ_OP_DISCARD = 3, /* securely erase sectors */ REQ_OP_SECURE_ERASE = 5, - /* reset a zone write pointer */ - REQ_OP_ZONE_RESET = 6, /* write the same sector many times */ REQ_OP_WRITE_SAME = 7, - /* reset all the zone present on the device */ - REQ_OP_ZONE_RESET_ALL = 8, /* write the zero filled sector many times */ REQ_OP_WRITE_ZEROES = 9, /* Open a zone */ @@ -316,6 +339,10 @@ enum req_opf { REQ_OP_ZONE_FINISH = 12, /* write data at the current zone write pointer */ REQ_OP_ZONE_APPEND = 13, + /* reset a zone write pointer */ + REQ_OP_ZONE_RESET = 15, + /* reset all the zone present on the device */ + REQ_OP_ZONE_RESET_ALL = 17, /* SCSI passthrough using struct scsi_request */ REQ_OP_SCSI_IN = 32, diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 8fd900998b4e..06ecb2c1492f 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -4,9 +4,6 @@ #include <linux/sched.h> #include <linux/sched/clock.h> - -#ifdef CONFIG_BLOCK - #include <linux/major.h> #include <linux/genhd.h> #include <linux/list.h> @@ -289,8 +286,6 @@ static inline unsigned short req_get_ioprio(struct request *req) struct blk_queue_ctx; -typedef blk_qc_t (make_request_fn) (struct request_queue *q, struct bio *bio); - struct bio_vec; enum blk_eh_timer_return { @@ -401,8 +396,6 @@ struct request_queue { struct blk_queue_stats *stats; struct rq_qos *rq_qos; - make_request_fn *make_request_fn; - const struct blk_mq_ops *mq_ops; /* sw queues */ @@ -528,9 +521,9 @@ struct request_queue { unsigned int sg_timeout; unsigned int sg_reserved_size; int node; + struct mutex debugfs_mutex; #ifdef CONFIG_BLK_DEV_IO_TRACE struct blk_trace __rcu *blk_trace; - struct mutex blk_trace_mutex; #endif /* * for flush operations @@ -574,8 +567,9 @@ struct request_queue { struct list_head tag_set_list; struct bio_set bio_split; -#ifdef CONFIG_BLK_DEBUG_FS struct dentry *debugfs_dir; + +#ifdef CONFIG_BLK_DEBUG_FS struct dentry *sched_debugfs_dir; struct dentry *rqos_debugfs_dir; #endif @@ -584,12 +578,11 @@ struct request_queue { size_t cmd_size; - struct work_struct release_work; - #define BLK_MAX_WRITE_HINTS 5 u64 write_hints[BLK_MAX_WRITE_HINTS]; }; +/* Keep blk_queue_flag_name[] in sync with the definitions below */ #define QUEUE_FLAG_STOPPED 0 /* queue is stopped */ #define QUEUE_FLAG_DYING 1 /* queue being torn down */ #define QUEUE_FLAG_NOMERGES 3 /* disable merge attempts */ @@ -860,8 +853,7 @@ static inline void rq_flush_dcache_pages(struct request *rq) extern int blk_register_queue(struct gendisk *disk); extern void blk_unregister_queue(struct gendisk *disk); -extern blk_qc_t generic_make_request(struct bio *bio); -extern blk_qc_t direct_make_request(struct bio *bio); +blk_qc_t submit_bio_noacct(struct bio *bio); extern void blk_rq_init(struct request_queue *q, struct request *rq); extern void blk_put_request(struct request *); extern struct request *blk_get_request(struct request_queue *, unsigned int op, @@ -875,7 +867,7 @@ extern void blk_rq_unprep_clone(struct request *rq); extern blk_status_t blk_insert_cloned_request(struct request_queue *q, struct request *rq); extern int blk_rq_append_bio(struct request *rq, struct bio **bio); -extern void blk_queue_split(struct request_queue *, struct bio **); +extern void blk_queue_split(struct bio **); extern int scsi_verify_blk_ioctl(struct block_device *, unsigned int); extern int scsi_cmd_blk_ioctl(struct block_device *, fmode_t, unsigned int, void __user *); @@ -1078,7 +1070,6 @@ void blk_steal_bios(struct bio_list *list, struct request *rq); extern bool blk_update_request(struct request *rq, blk_status_t error, unsigned int nr_bytes); -extern void __blk_complete_request(struct request *); extern void blk_abort_request(struct request *); /* @@ -1165,13 +1156,13 @@ static inline int blk_rq_map_sg(struct request_queue *q, struct request *rq, return __blk_rq_map_sg(q, rq, sglist, &last_sg); } extern void blk_dump_rq_flags(struct request *, char *); -extern long nr_blockdev_pages(void); bool __must_check blk_get_queue(struct request_queue *); -struct request_queue *blk_alloc_queue(make_request_fn make_request, int node_id); +struct request_queue *blk_alloc_queue(int node_id); extern void blk_put_queue(struct request_queue *); extern void blk_set_queue_dying(struct request_queue *); +#ifdef CONFIG_BLOCK /* * blk_plug permits building a queue of related requests by holding the I/O * fragments for a short period. This allows merging of sequential requests @@ -1189,6 +1180,7 @@ struct blk_plug { struct list_head cb_list; /* md requires an unplug callback */ unsigned short rq_count; bool multiple_queues; + bool nowait; }; #define BLK_MAX_REQUEST_COUNT 16 #define BLK_PLUG_FLUSH_SIZE (128 * 1024) @@ -1231,9 +1223,47 @@ static inline bool blk_needs_flush_plug(struct task_struct *tsk) !list_empty(&plug->cb_list)); } +int blkdev_issue_flush(struct block_device *, gfp_t); +long nr_blockdev_pages(void); +#else /* CONFIG_BLOCK */ +struct blk_plug { +}; + +static inline void blk_start_plug(struct blk_plug *plug) +{ +} + +static inline void blk_finish_plug(struct blk_plug *plug) +{ +} + +static inline void blk_flush_plug(struct task_struct *task) +{ +} + +static inline void blk_schedule_flush_plug(struct task_struct *task) +{ +} + + +static inline bool blk_needs_flush_plug(struct task_struct *tsk) +{ + return false; +} + +static inline int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask) +{ + return 0; +} + +static inline long nr_blockdev_pages(void) +{ + return 0; +} +#endif /* CONFIG_BLOCK */ + extern void blk_io_schedule(void); -int blkdev_issue_flush(struct block_device *, gfp_t); extern int blkdev_issue_write_same(struct block_device *bdev, sector_t sector, sector_t nr_sects, gfp_t gfp_mask, struct page *page); @@ -1515,7 +1545,7 @@ static inline unsigned int blksize_bits(unsigned int size) static inline unsigned int block_size(struct block_device *bdev) { - return bdev->bd_block_size; + return 1 << bdev->bd_inode->i_blkbits; } int kblockd_schedule_work(struct work_struct *work); @@ -1745,6 +1775,7 @@ static inline void blk_ksm_unregister(struct request_queue *q) { } struct block_device_operations { + blk_qc_t (*submit_bio) (struct bio *bio); int (*open) (struct block_device *, fmode_t); void (*release) (struct gendisk *, fmode_t); int (*rw_page)(struct block_device *, sector_t, struct page *, unsigned int); @@ -1752,8 +1783,6 @@ struct block_device_operations { int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long); unsigned int (*check_events) (struct gendisk *disk, unsigned int clearing); - /* ->media_changed() is DEPRECATED, use ->check_events() instead */ - int (*media_changed) (struct gendisk *); void (*unlock_native_capacity) (struct gendisk *); int (*revalidate_disk) (struct gendisk *); int (*getgeo)(struct block_device *, struct hd_geometry *); @@ -1833,52 +1862,6 @@ static inline bool blk_req_can_dispatch_to_zone(struct request *rq) } #endif /* CONFIG_BLK_DEV_ZONED */ -#else /* CONFIG_BLOCK */ - -struct block_device; - -/* - * stubs for when the block layer is configured out - */ -#define buffer_heads_over_limit 0 - -static inline long nr_blockdev_pages(void) -{ - return 0; -} - -struct blk_plug { -}; - -static inline void blk_start_plug(struct blk_plug *plug) -{ -} - -static inline void blk_finish_plug(struct blk_plug *plug) -{ -} - -static inline void blk_flush_plug(struct task_struct *task) -{ -} - -static inline void blk_schedule_flush_plug(struct task_struct *task) -{ -} - - -static inline bool blk_needs_flush_plug(struct task_struct *tsk) -{ - return false; -} - -static inline int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask) -{ - return 0; -} - -#endif /* CONFIG_BLOCK */ - static inline void blk_wake_io_task(struct task_struct *waiter) { /* @@ -1892,7 +1875,6 @@ static inline void blk_wake_io_task(struct task_struct *waiter) wake_up_process(waiter); } -#ifdef CONFIG_BLOCK unsigned long disk_start_io_acct(struct gendisk *disk, unsigned int sectors, unsigned int op); void disk_end_io_acct(struct gendisk *disk, unsigned int op, @@ -1918,6 +1900,53 @@ static inline void bio_end_io_acct(struct bio *bio, unsigned long start_time) { return disk_end_io_acct(bio->bi_disk, bio_op(bio), start_time); } -#endif /* CONFIG_BLOCK */ +int bdev_read_only(struct block_device *bdev); +int set_blocksize(struct block_device *bdev, int size); + +const char *bdevname(struct block_device *bdev, char *buffer); +struct block_device *lookup_bdev(const char *); + +void blkdev_show(struct seq_file *seqf, off_t offset); + +#define BDEVNAME_SIZE 32 /* Largest string for a blockdev identifier */ +#define BDEVT_SIZE 10 /* Largest string for MAJ:MIN for blkdev */ +#ifdef CONFIG_BLOCK +#define BLKDEV_MAJOR_MAX 512 +#else +#define BLKDEV_MAJOR_MAX 0 +#endif + +int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder); +struct block_device *blkdev_get_by_path(const char *path, fmode_t mode, + void *holder); +struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder); +int bd_prepare_to_claim(struct block_device *bdev, struct block_device *whole, + void *holder); +void bd_abort_claiming(struct block_device *bdev, struct block_device *whole, + void *holder); +void blkdev_put(struct block_device *bdev, fmode_t mode); + +struct block_device *I_BDEV(struct inode *inode); +struct block_device *bdget(dev_t); +struct block_device *bdgrab(struct block_device *bdev); +void bdput(struct block_device *); + +#ifdef CONFIG_BLOCK +void invalidate_bdev(struct block_device *bdev); +int sync_blockdev(struct block_device *bdev); +#else +static inline void invalidate_bdev(struct block_device *bdev) +{ +} +static inline int sync_blockdev(struct block_device *bdev) +{ + return 0; +} #endif +int fsync_bdev(struct block_device *bdev); + +struct super_block *freeze_bdev(struct block_device *bdev); +int thaw_bdev(struct block_device *bdev, struct super_block *sb); + +#endif /* _LINUX_BLKDEV_H */ diff --git a/include/linux/bpf-netns.h b/include/linux/bpf-netns.h index 4052d649f36d..47d5b0c708c9 100644 --- a/include/linux/bpf-netns.h +++ b/include/linux/bpf-netns.h @@ -33,7 +33,7 @@ int netns_bpf_prog_query(const union bpf_attr *attr, union bpf_attr __user *uattr); int netns_bpf_prog_attach(const union bpf_attr *attr, struct bpf_prog *prog); -int netns_bpf_prog_detach(const union bpf_attr *attr); +int netns_bpf_prog_detach(const union bpf_attr *attr, enum bpf_prog_type ptype); int netns_bpf_link_create(const union bpf_attr *attr, struct bpf_prog *prog); #else @@ -49,7 +49,8 @@ static inline int netns_bpf_prog_attach(const union bpf_attr *attr, return -EOPNOTSUPP; } -static inline int netns_bpf_prog_detach(const union bpf_attr *attr) +static inline int netns_bpf_prog_detach(const union bpf_attr *attr, + enum bpf_prog_type ptype) { return -EOPNOTSUPP; } diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 07052d44bca1..9750a1902ee5 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -1543,13 +1543,16 @@ static inline void bpf_map_offload_map_free(struct bpf_map *map) #endif /* CONFIG_NET && CONFIG_BPF_SYSCALL */ #if defined(CONFIG_BPF_STREAM_PARSER) -int sock_map_prog_update(struct bpf_map *map, struct bpf_prog *prog, u32 which); +int sock_map_prog_update(struct bpf_map *map, struct bpf_prog *prog, + struct bpf_prog *old, u32 which); int sock_map_get_from_fd(const union bpf_attr *attr, struct bpf_prog *prog); +int sock_map_prog_detach(const union bpf_attr *attr, enum bpf_prog_type ptype); void sock_map_unhash(struct sock *sk); void sock_map_close(struct sock *sk, long timeout); #else static inline int sock_map_prog_update(struct bpf_map *map, - struct bpf_prog *prog, u32 which) + struct bpf_prog *prog, + struct bpf_prog *old, u32 which) { return -EOPNOTSUPP; } @@ -1559,6 +1562,12 @@ static inline int sock_map_get_from_fd(const union bpf_attr *attr, { return -EINVAL; } + +static inline int sock_map_prog_detach(const union bpf_attr *attr, + enum bpf_prog_type ptype) +{ + return -EOPNOTSUPP; +} #endif /* CONFIG_BPF_STREAM_PARSER */ #if defined(CONFIG_INET) && defined(CONFIG_BPF_SYSCALL) diff --git a/include/linux/btf.h b/include/linux/btf.h index 5c1ea99b480f..8b81fbb4497c 100644 --- a/include/linux/btf.h +++ b/include/linux/btf.h @@ -82,6 +82,11 @@ static inline bool btf_type_is_int(const struct btf_type *t) return BTF_INFO_KIND(t->info) == BTF_KIND_INT; } +static inline bool btf_type_is_small_int(const struct btf_type *t) +{ + return btf_type_is_int(t) && t->size <= sizeof(u64); +} + static inline bool btf_type_is_enum(const struct btf_type *t) { return BTF_INFO_KIND(t->info) == BTF_KIND_ENUM; diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h index 22fb11e2d2e0..6b47f94378c5 100644 --- a/include/linux/buffer_head.h +++ b/include/linux/buffer_head.h @@ -406,6 +406,7 @@ static inline int inode_has_buffers(struct inode *inode) { return 0; } static inline void invalidate_inode_buffers(struct inode *inode) {} static inline int remove_inode_buffers(struct inode *inode) { return 1; } static inline int sync_mapping_buffers(struct address_space *mapping) { return 0; } +#define buffer_heads_over_limit 0 #endif /* CONFIG_BLOCK */ #endif /* _LINUX_BUFFER_HEAD_H */ diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h index 8543fa59da72..f48d0a31deae 100644 --- a/include/linux/cdrom.h +++ b/include/linux/cdrom.h @@ -73,7 +73,6 @@ struct cdrom_device_ops { int (*drive_status) (struct cdrom_device_info *, int); unsigned int (*check_events) (struct cdrom_device_info *cdi, unsigned int clearing, int slot); - int (*media_changed) (struct cdrom_device_info *, int); int (*tray_move) (struct cdrom_device_info *, int); int (*lock_door) (struct cdrom_device_info *, int); int (*select_speed) (struct cdrom_device_info *, int); @@ -107,7 +106,6 @@ extern int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg); extern unsigned int cdrom_check_events(struct cdrom_device_info *cdi, unsigned int clearing); -extern int cdrom_media_changed(struct cdrom_device_info *); extern int register_cdrom(struct gendisk *disk, struct cdrom_device_info *cdi); extern void unregister_cdrom(struct cdrom_device_info *cdi); diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h index 52661155f85f..fee0b5547cd0 100644 --- a/include/linux/cgroup-defs.h +++ b/include/linux/cgroup-defs.h @@ -790,7 +790,9 @@ struct sock_cgroup_data { union { #ifdef __LITTLE_ENDIAN struct { - u8 is_data; + u8 is_data : 1; + u8 no_refcnt : 1; + u8 unused : 6; u8 padding; u16 prioidx; u32 classid; @@ -800,7 +802,9 @@ struct sock_cgroup_data { u32 classid; u16 prioidx; u8 padding; - u8 is_data; + u8 unused : 6; + u8 no_refcnt : 1; + u8 is_data : 1; } __packed; #endif u64 val; diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 4598e4da6b1b..618838c48313 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -822,6 +822,7 @@ extern spinlock_t cgroup_sk_update_lock; void cgroup_sk_alloc_disable(void); void cgroup_sk_alloc(struct sock_cgroup_data *skcd); +void cgroup_sk_clone(struct sock_cgroup_data *skcd); void cgroup_sk_free(struct sock_cgroup_data *skcd); static inline struct cgroup *sock_cgroup_ptr(struct sock_cgroup_data *skcd) @@ -835,7 +836,7 @@ static inline struct cgroup *sock_cgroup_ptr(struct sock_cgroup_data *skcd) */ v = READ_ONCE(skcd->val); - if (v & 1) + if (v & 3) return &cgrp_dfl_root.cgrp; return (struct cgroup *)(unsigned long)v ?: &cgrp_dfl_root.cgrp; @@ -847,6 +848,7 @@ static inline struct cgroup *sock_cgroup_ptr(struct sock_cgroup_data *skcd) #else /* CONFIG_CGROUP_DATA */ static inline void cgroup_sk_alloc(struct sock_cgroup_data *skcd) {} +static inline void cgroup_sk_clone(struct sock_cgroup_data *skcd) {} static inline void cgroup_sk_free(struct sock_cgroup_data *skcd) {} #endif /* CONFIG_CGROUP_DATA */ diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index ee37256ec8bd..5e55302e3bf6 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -33,6 +33,14 @@ #define __no_sanitize_thread #endif +#if __has_feature(undefined_behavior_sanitizer) +/* GCC does not have __SANITIZE_UNDEFINED__ */ +#define __no_sanitize_undefined \ + __attribute__((no_sanitize("undefined"))) +#else +#define __no_sanitize_undefined +#endif + /* * Not all versions of clang implement the the type-generic versions * of the builtin overflow checkers. Fortunately, clang implements diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 7dd4e0349ef3..0b1dc61f3955 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -11,7 +11,7 @@ + __GNUC_PATCHLEVEL__) /* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145 */ -#if GCC_VERSION < 40800 +#if GCC_VERSION < 40900 # error Sorry, your compiler is too old - please upgrade it. #endif @@ -150,6 +150,12 @@ #define __no_sanitize_thread #endif +#if __has_attribute(__no_sanitize_undefined__) +#define __no_sanitize_undefined __attribute__((no_sanitize_undefined)) +#else +#define __no_sanitize_undefined +#endif + #if GCC_VERSION >= 50100 #define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 #endif diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 30827f82ad62..6810d80acb0b 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -120,65 +120,12 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, /* Annotate a C jump table to allow objtool to follow the code flow */ #define __annotate_jump_table __section(.rodata..c_jump_table) -#ifdef CONFIG_DEBUG_ENTRY -/* Begin/end of an instrumentation safe region */ -#define instrumentation_begin() ({ \ - asm volatile("%c0:\n\t" \ - ".pushsection .discard.instr_begin\n\t" \ - ".long %c0b - .\n\t" \ - ".popsection\n\t" : : "i" (__COUNTER__)); \ -}) - -/* - * Because instrumentation_{begin,end}() can nest, objtool validation considers - * _begin() a +1 and _end() a -1 and computes a sum over the instructions. - * When the value is greater than 0, we consider instrumentation allowed. - * - * There is a problem with code like: - * - * noinstr void foo() - * { - * instrumentation_begin(); - * ... - * if (cond) { - * instrumentation_begin(); - * ... - * instrumentation_end(); - * } - * bar(); - * instrumentation_end(); - * } - * - * If instrumentation_end() would be an empty label, like all the other - * annotations, the inner _end(), which is at the end of a conditional block, - * would land on the instruction after the block. - * - * If we then consider the sum of the !cond path, we'll see that the call to - * bar() is with a 0-value, even though, we meant it to happen with a positive - * value. - * - * To avoid this, have _end() be a NOP instruction, this ensures it will be - * part of the condition block and does not escape. - */ -#define instrumentation_end() ({ \ - asm volatile("%c0: nop\n\t" \ - ".pushsection .discard.instr_end\n\t" \ - ".long %c0b - .\n\t" \ - ".popsection\n\t" : : "i" (__COUNTER__)); \ -}) -#endif /* CONFIG_DEBUG_ENTRY */ - #else #define annotate_reachable() #define annotate_unreachable() #define __annotate_jump_table #endif -#ifndef instrumentation_begin -#define instrumentation_begin() do { } while(0) -#define instrumentation_end() do { } while(0) -#endif - #ifndef ASM_UNREACHABLE # define ASM_UNREACHABLE #endif @@ -230,28 +177,6 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, # define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __LINE__) #endif -/* - * Prevent the compiler from merging or refetching reads or writes. The - * compiler is also forbidden from reordering successive instances of - * READ_ONCE and WRITE_ONCE, but only when the compiler is aware of some - * particular ordering. One way to make the compiler aware of ordering is to - * put the two invocations of READ_ONCE or WRITE_ONCE in different C - * statements. - * - * These two macros will also work on aggregate data types like structs or - * unions. - * - * Their two major use cases are: (1) Mediating communication between - * process-level code and irq/NMI handlers, all running on the same CPU, - * and (2) Ensuring that the compiler does not fold, spindle, or otherwise - * mutilate accesses that either do not require ordering or that interact - * with an explicit memory barrier or atomic instruction that provides the - * required ordering. - */ -#include <asm/barrier.h> -#include <linux/kasan-checks.h> -#include <linux/kcsan-checks.h> - /** * data_race - mark an expression as containing intentional data races * @@ -272,65 +197,6 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val, __v; \ }) -/* - * Use __READ_ONCE() instead of READ_ONCE() if you do not require any - * atomicity or dependency ordering guarantees. Note that this may result - * in tears! - */ -#define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x)) - -#define __READ_ONCE_SCALAR(x) \ -({ \ - __unqual_scalar_typeof(x) __x = __READ_ONCE(x); \ - smp_read_barrier_depends(); \ - (typeof(x))__x; \ -}) - -#define READ_ONCE(x) \ -({ \ - compiletime_assert_rwonce_type(x); \ - __READ_ONCE_SCALAR(x); \ -}) - -#define __WRITE_ONCE(x, val) \ -do { \ - *(volatile typeof(x) *)&(x) = (val); \ -} while (0) - -#define WRITE_ONCE(x, val) \ -do { \ - compiletime_assert_rwonce_type(x); \ - __WRITE_ONCE(x, val); \ -} while (0) - -static __no_sanitize_or_inline -unsigned long __read_once_word_nocheck(const void *addr) -{ - return __READ_ONCE(*(unsigned long *)addr); -} - -/* - * Use READ_ONCE_NOCHECK() instead of READ_ONCE() if you need to load a - * word from memory atomically but without telling KASAN/KCSAN. This is - * usually used by unwinding code when walking the stack of a running process. - */ -#define READ_ONCE_NOCHECK(x) \ -({ \ - unsigned long __x; \ - compiletime_assert(sizeof(x) == sizeof(__x), \ - "Unsupported access size for READ_ONCE_NOCHECK()."); \ - __x = __read_once_word_nocheck(&(x)); \ - smp_read_barrier_depends(); \ - (typeof(x))__x; \ -}) - -static __no_kasan_or_inline -unsigned long read_word_at_a_time(const void *addr) -{ - kasan_check_read(addr, 1); - return *(unsigned long *)addr; -} - #endif /* __KERNEL__ */ /* @@ -354,57 +220,6 @@ static inline void *offset_to_ptr(const int *off) #endif /* __ASSEMBLY__ */ -/* Compile time object size, -1 for unknown */ -#ifndef __compiletime_object_size -# define __compiletime_object_size(obj) -1 -#endif -#ifndef __compiletime_warning -# define __compiletime_warning(message) -#endif -#ifndef __compiletime_error -# define __compiletime_error(message) -#endif - -#ifdef __OPTIMIZE__ -# define __compiletime_assert(condition, msg, prefix, suffix) \ - do { \ - extern void prefix ## suffix(void) __compiletime_error(msg); \ - if (!(condition)) \ - prefix ## suffix(); \ - } while (0) -#else -# define __compiletime_assert(condition, msg, prefix, suffix) do { } while (0) -#endif - -#define _compiletime_assert(condition, msg, prefix, suffix) \ - __compiletime_assert(condition, msg, prefix, suffix) - -/** - * compiletime_assert - break build and emit msg if condition is false - * @condition: a compile-time constant condition to check - * @msg: a message to emit if condition is false - * - * In tradition of POSIX assert, this macro will break the build if the - * supplied condition is *false*, emitting the supplied error message if the - * compiler has support to do so. - */ -#define compiletime_assert(condition, msg) \ - _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) - -#define compiletime_assert_atomic_type(t) \ - compiletime_assert(__native_word(t), \ - "Need native word sized stores/loads for atomicity.") - -/* - * Yes, this permits 64-bit accesses on 32-bit architectures. These will - * actually be atomic in some cases (namely Armv7 + LPAE), but for others we - * rely on the access being split into 2x32-bit accesses for a 32-bit quantity - * (e.g. a virtual address) and a strong prevailing wind. - */ -#define compiletime_assert_rwonce_type(t) \ - compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \ - "Unsupported access size for {READ,WRITE}_ONCE().") - /* &a[0] degrades to a pointer: a different type from an array */ #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) @@ -414,4 +229,6 @@ static inline void *offset_to_ptr(const int *off) */ #define prevent_tail_call_optimization() mb() +#include <asm/rwonce.h> + #endif /* __LINUX_COMPILER_H */ diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h index cdf016596659..c8f03d2969df 100644 --- a/include/linux/compiler_attributes.h +++ b/include/linux/compiler_attributes.h @@ -40,6 +40,7 @@ # define __GCC4_has_attribute___noclone__ 1 # define __GCC4_has_attribute___nonstring__ 0 # define __GCC4_has_attribute___no_sanitize_address__ (__GNUC_MINOR__ >= 8) +# define __GCC4_has_attribute___no_sanitize_undefined__ (__GNUC_MINOR__ >= 9) # define __GCC4_has_attribute___fallthrough__ 0 #endif diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index e368384445b6..2e231ba8fe3f 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -118,10 +118,6 @@ struct ftrace_likely_data { #define notrace __attribute__((__no_instrument_function__)) #endif -/* Section for code which can't be instrumented at all */ -#define noinstr \ - noinline notrace __attribute((__section__(".noinstr.text"))) - /* * it doesn't make sense on ARM (currently the only user of __naked) * to trace naked functions because then mcount is called without @@ -193,16 +189,18 @@ struct ftrace_likely_data { #define __no_kcsan __no_sanitize_thread #ifdef __SANITIZE_THREAD__ -# define __no_kcsan_or_inline __no_kcsan notrace __maybe_unused -# define __no_sanitize_or_inline __no_kcsan_or_inline -#else -# define __no_kcsan_or_inline __always_inline +# define __no_sanitize_or_inline __no_kcsan notrace __maybe_unused #endif #ifndef __no_sanitize_or_inline #define __no_sanitize_or_inline __always_inline #endif +/* Section for code which can't be instrumented at all */ +#define noinstr \ + noinline notrace __attribute((__section__(".noinstr.text"))) \ + __no_kcsan __no_sanitize_address + #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ @@ -254,32 +252,8 @@ struct ftrace_likely_data { * __unqual_scalar_typeof(x) - Declare an unqualified scalar type, leaving * non-scalar types unchanged. */ -#if (defined(CONFIG_CC_IS_GCC) && CONFIG_GCC_VERSION < 40900) || defined(__CHECKER__) -/* - * We build this out of a couple of helper macros in a vain attempt to - * help you keep your lunch down while reading it. - */ -#define __pick_scalar_type(x, type, otherwise) \ - __builtin_choose_expr(__same_type(x, type), (type)0, otherwise) - -/* - * 'char' is not type-compatible with either 'signed char' or 'unsigned char', - * so we include the naked type here as well as the signed/unsigned variants. - */ -#define __pick_integer_type(x, type, otherwise) \ - __pick_scalar_type(x, type, \ - __pick_scalar_type(x, unsigned type, \ - __pick_scalar_type(x, signed type, otherwise))) - -#define __unqual_scalar_typeof(x) typeof( \ - __pick_integer_type(x, char, \ - __pick_integer_type(x, short, \ - __pick_integer_type(x, int, \ - __pick_integer_type(x, long, \ - __pick_integer_type(x, long long, x)))))) -#else /* - * If supported, prefer C11 _Generic for better compile-times. As above, 'char' + * Prefer C11 _Generic for better compile-times and simpler code. Note: 'char' * is not type-compatible with 'signed char', and we define a separate case. */ #define __scalar_type_to_expr_cases(type) \ @@ -295,13 +269,53 @@ struct ftrace_likely_data { __scalar_type_to_expr_cases(long), \ __scalar_type_to_expr_cases(long long), \ default: (x))) -#endif /* Is this type a native word size -- useful for atomic operations */ #define __native_word(t) \ (sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \ sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long)) +/* Compile time object size, -1 for unknown */ +#ifndef __compiletime_object_size +# define __compiletime_object_size(obj) -1 +#endif +#ifndef __compiletime_warning +# define __compiletime_warning(message) +#endif +#ifndef __compiletime_error +# define __compiletime_error(message) +#endif + +#ifdef __OPTIMIZE__ +# define __compiletime_assert(condition, msg, prefix, suffix) \ + do { \ + extern void prefix ## suffix(void) __compiletime_error(msg); \ + if (!(condition)) \ + prefix ## suffix(); \ + } while (0) +#else +# define __compiletime_assert(condition, msg, prefix, suffix) do { } while (0) +#endif + +#define _compiletime_assert(condition, msg, prefix, suffix) \ + __compiletime_assert(condition, msg, prefix, suffix) + +/** + * compiletime_assert - break build and emit msg if condition is false + * @condition: a compile-time constant condition to check + * @msg: a message to emit if condition is false + * + * In tradition of POSIX assert, this macro will break the build if the + * supplied condition is *false*, emitting the supplied error message if the + * compiler has support to do so. + */ +#define compiletime_assert(condition, msg) \ + _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) + +#define compiletime_assert_atomic_type(t) \ + compiletime_assert(__native_word(t), \ + "Need native word sized stores/loads for atomicity.") + /* Helpers for emitting diagnostics in pragmas. */ #ifndef __diag #define __diag(string) diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h index 981b880d5b60..d53cd331c4dd 100644 --- a/include/linux/context_tracking.h +++ b/include/linux/context_tracking.h @@ -5,6 +5,8 @@ #include <linux/sched.h> #include <linux/vtime.h> #include <linux/context_tracking_state.h> +#include <linux/instrumentation.h> + #include <asm/ptrace.h> diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 52692587f7fe..8aa84c052fdf 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -64,6 +64,7 @@ extern ssize_t cpu_show_tsx_async_abort(struct device *dev, char *buf); extern ssize_t cpu_show_itlb_multihit(struct device *dev, struct device_attribute *attr, char *buf); +extern ssize_t cpu_show_srbds(struct device *dev, struct device_attribute *attr, char *buf); extern __printf(4, 5) struct device *cpu_device_create(struct device *parent, void *drvdata, diff --git a/include/linux/crypto.h b/include/linux/crypto.h index 763863dbc079..ef90e07c9635 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -16,9 +16,8 @@ #include <linux/kernel.h> #include <linux/list.h> #include <linux/bug.h> +#include <linux/refcount.h> #include <linux/slab.h> -#include <linux/string.h> -#include <linux/uaccess.h> #include <linux/completion.h> /* @@ -61,8 +60,8 @@ #define CRYPTO_ALG_ASYNC 0x00000080 /* - * Set this bit if and only if the algorithm requires another algorithm of - * the same type to handle corner cases. + * Set if the algorithm (or an algorithm which it uses) requires another + * algorithm of the same type to handle corner cases. */ #define CRYPTO_ALG_NEED_FALLBACK 0x00000100 @@ -102,6 +101,38 @@ #define CRYPTO_NOLOAD 0x00008000 /* + * The algorithm may allocate memory during request processing, i.e. during + * encryption, decryption, or hashing. Users can request an algorithm with this + * flag unset if they can't handle memory allocation failures. + * + * This flag is currently only implemented for algorithms of type "skcipher", + * "aead", "ahash", "shash", and "cipher". Algorithms of other types might not + * have this flag set even if they allocate memory. + * + * In some edge cases, algorithms can allocate memory regardless of this flag. + * To avoid these cases, users must obey the following usage constraints: + * skcipher: + * - The IV buffer and all scatterlist elements must be aligned to the + * algorithm's alignmask. + * - If the data were to be divided into chunks of size + * crypto_skcipher_walksize() (with any remainder going at the end), no + * chunk can cross a page boundary or a scatterlist element boundary. + * aead: + * - The IV buffer and all scatterlist elements must be aligned to the + * algorithm's alignmask. + * - The first scatterlist element must contain all the associated data, + * and its pages must be !PageHighMem. + * - If the plaintext/ciphertext were to be divided into chunks of size + * crypto_aead_walksize() (with the remainder going at the end), no chunk + * can cross a page boundary or a scatterlist element boundary. + * ahash: + * - The result buffer must be aligned to the algorithm's alignmask. + * - crypto_ahash_finup() must not be used unless the algorithm implements + * ->finup() natively. + */ +#define CRYPTO_ALG_ALLOCATES_MEMORY 0x00010000 + +/* * Transform masks and values (for crt_flags). */ #define CRYPTO_TFM_NEED_KEY 0x00000001 @@ -595,6 +626,8 @@ int crypto_has_alg(const char *name, u32 type, u32 mask); struct crypto_tfm { u32 crt_flags; + + int node; void (*exit)(struct crypto_tfm *tfm); diff --git a/include/linux/dasd_mod.h b/include/linux/dasd_mod.h index d39abad2ff6e..14e6cf8c6267 100644 --- a/include/linux/dasd_mod.h +++ b/include/linux/dasd_mod.h @@ -4,6 +4,8 @@ #include <asm/dasd.h> +struct gendisk; + extern int dasd_biodasdinfo(struct gendisk *disk, dasd_information2_t *info); #endif diff --git a/include/linux/decompress/unzstd.h b/include/linux/decompress/unzstd.h new file mode 100644 index 000000000000..56d539ae880f --- /dev/null +++ b/include/linux/decompress/unzstd.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef LINUX_DECOMPRESS_UNZSTD_H +#define LINUX_DECOMPRESS_UNZSTD_H + +int unzstd(unsigned char *inbuf, long len, + long (*fill)(void*, unsigned long), + long (*flush)(void*, unsigned long), + unsigned char *output, + long *pos, + void (*error_fn)(char *x)); +#endif diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 8750f2dc5613..93096e524e43 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -322,12 +322,6 @@ struct dm_target { bool discards_supported:1; }; -/* Each target can link one of these into the table */ -struct dm_target_callbacks { - struct list_head list; - int (*congested_fn) (struct dm_target_callbacks *, int); -}; - void *dm_per_bio_data(struct bio *bio, size_t data_size); struct bio *dm_bio_from_per_bio_data(void *data, size_t data_size); unsigned dm_bio_get_target_bio_nr(const struct bio *bio); @@ -426,6 +420,7 @@ const char *dm_device_name(struct mapped_device *md); int dm_copy_name_and_uuid(struct mapped_device *md, char *name, char *uuid); struct gendisk *dm_disk(struct mapped_device *md); int dm_suspended(struct dm_target *ti); +int dm_post_suspending(struct dm_target *ti); int dm_noflush_suspending(struct dm_target *ti); void dm_accept_partial_bio(struct bio *bio, unsigned n_sectors); union map_info *dm_get_rq_mapinfo(struct request *rq); @@ -478,11 +473,6 @@ int dm_table_add_target(struct dm_table *t, const char *type, sector_t start, sector_t len, char *params); /* - * Target_ctr should call this if it needs to add any callbacks. - */ -void dm_table_add_target_callbacks(struct dm_table *t, struct dm_target_callbacks *cb); - -/* * Target can use this to set the table's type. * Can only ever be called from a target's ctr. * Useful for "hybrid" target (supports both bio-based diff --git a/include/linux/device.h b/include/linux/device.h index 15460a5ac024..5efed864b387 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -433,7 +433,8 @@ enum dl_dev_state { * @suppliers: List of links to supplier devices. * @consumers: List of links to consumer devices. * @needs_suppliers: Hook to global list of devices waiting for suppliers. - * @defer_sync: Hook to global list of devices that have deferred sync_state. + * @defer_hook: Hook to global list of devices that have deferred sync_state or + * deferred fw_devlink. * @need_for_probe: If needs_suppliers is on a list, this indicates if the * suppliers are needed for probe or not. * @status: Driver status information. @@ -442,7 +443,7 @@ struct dev_links_info { struct list_head suppliers; struct list_head consumers; struct list_head needs_suppliers; - struct list_head defer_sync; + struct list_head defer_hook; bool need_for_probe; enum dl_dev_state status; }; diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index ab0c156abee6..a2ca294eaebe 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -311,6 +311,7 @@ struct dma_buf { void *vmap_ptr; const char *exp_name; const char *name; + spinlock_t name_lock; /* spinlock to protect name access */ struct module *owner; struct list_head list_node; void *priv; diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h index 136f984df0d9..ab2e20cba951 100644 --- a/include/linux/dma-direct.h +++ b/include/linux/dma-direct.h @@ -69,6 +69,7 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size, u64 dma_direct_get_required_mask(struct device *dev); gfp_t dma_direct_optimal_gfp_mask(struct device *dev, u64 dma_mask, u64 *phys_mask); +bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size); void *dma_direct_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs); void dma_direct_free(struct device *dev, size_t size, void *cpu_addr, @@ -77,8 +78,6 @@ void *dma_direct_alloc_pages(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs); void dma_direct_free_pages(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_addr, unsigned long attrs); -struct page *__dma_direct_alloc_pages(struct device *dev, size_t size, - gfp_t gfp, unsigned long attrs); int dma_direct_get_sgtable(struct device *dev, struct sg_table *sgt, void *cpu_addr, dma_addr_t dma_addr, size_t size, unsigned long attrs); @@ -87,4 +86,5 @@ int dma_direct_mmap(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, dma_addr_t dma_addr, size_t size, unsigned long attrs); int dma_direct_supported(struct device *dev, u64 mask); +bool dma_direct_need_sync(struct device *dev, dma_addr_t dma_addr); #endif /* _LINUX_DMA_DIRECT_H */ diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 78f677cf45ab..a33ed3954ed4 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -461,6 +461,7 @@ int dma_set_mask(struct device *dev, u64 mask); int dma_set_coherent_mask(struct device *dev, u64 mask); u64 dma_get_required_mask(struct device *dev); size_t dma_max_mapping_size(struct device *dev); +bool dma_need_sync(struct device *dev, dma_addr_t dma_addr); unsigned long dma_get_merge_boundary(struct device *dev); #else /* CONFIG_HAS_DMA */ static inline dma_addr_t dma_map_page_attrs(struct device *dev, @@ -571,6 +572,10 @@ static inline size_t dma_max_mapping_size(struct device *dev) { return 0; } +static inline bool dma_need_sync(struct device *dev, dma_addr_t dma_addr) +{ + return false; +} static inline unsigned long dma_get_merge_boundary(struct device *dev) { return 0; diff --git a/include/linux/efi.h b/include/linux/efi.h index 2c6495f72f79..05c47f857383 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -350,6 +350,7 @@ void efi_native_runtime_setup(void); * associated with ConOut */ #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95) +#define LINUX_EFI_ARM_CPU_STATE_TABLE_GUID EFI_GUID(0xef79e4aa, 0x3c3d, 0x4989, 0xb9, 0x02, 0x07, 0xa9, 0x43, 0xe5, 0x50, 0xd2) #define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f) #define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b) #define LINUX_EFI_TPM_EVENT_LOG_GUID EFI_GUID(0xb7799cb0, 0xeca2, 0x4943, 0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa) @@ -993,6 +994,7 @@ int efivars_register(struct efivars *efivars, int efivars_unregister(struct efivars *efivars); struct kobject *efivars_kobject(void); +int efivar_supports_writes(void); int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), void *data, bool duplicates, struct list_head *head); @@ -1236,14 +1238,11 @@ struct linux_efi_memreserve { struct { phys_addr_t base; phys_addr_t size; - } entry[0]; + } entry[]; }; -#define EFI_MEMRESERVE_SIZE(count) (sizeof(struct linux_efi_memreserve) + \ - (count) * sizeof(((struct linux_efi_memreserve *)0)->entry[0])) - #define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \ - / sizeof(((struct linux_efi_memreserve *)0)->entry[0])) + / sizeof_field(struct linux_efi_memreserve, entry[0])) void __init efi_arch_mem_reserve(phys_addr_t addr, u64 size); diff --git a/include/linux/filter.h b/include/linux/filter.h index 259377723603..0b0144752d78 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -884,12 +884,12 @@ void bpf_jit_compile(struct bpf_prog *prog); bool bpf_jit_needs_zext(void); bool bpf_helper_changes_pkt_data(void *func); -static inline bool bpf_dump_raw_ok(void) +static inline bool bpf_dump_raw_ok(const struct cred *cred) { /* Reconstruction of call-sites is dependent on kallsyms, * thus make dump the same restriction. */ - return kallsyms_show_value() == 1; + return kallsyms_show_value(cred); } struct bpf_prog *bpf_patch_insn_single(struct bpf_prog *prog, u32 off, diff --git a/include/linux/fs.h b/include/linux/fs.h index 3f881a892ea7..bd7ec3eaeed0 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -175,6 +175,9 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset, /* File does not contribute to nr_files count */ #define FMODE_NOACCOUNT ((__force fmode_t)0x20000000) +/* File supports async buffered reads */ +#define FMODE_BUF_RASYNC ((__force fmode_t)0x40000000) + /* * Flag for rw_copy_check_uvector and compat_rw_copy_check_uvector * that indicates that they should check the contents of the iovec are @@ -315,6 +318,9 @@ enum rw_hint { #define IOCB_SYNC (1 << 5) #define IOCB_WRITE (1 << 6) #define IOCB_NOWAIT (1 << 7) +/* iocb->ki_waitq is valid */ +#define IOCB_WAITQ (1 << 8) +#define IOCB_NOIO (1 << 9) struct kiocb { struct file *ki_filp; @@ -328,7 +334,10 @@ struct kiocb { int ki_flags; u16 ki_hint; u16 ki_ioprio; /* See linux/ioprio.h */ - unsigned int ki_cookie; /* for ->iopoll */ + union { + unsigned int ki_cookie; /* for ->iopoll */ + struct wait_page_queue *ki_waitq; /* for async buffered IO */ + }; randomized_struct_fields_end }; @@ -470,45 +479,6 @@ struct address_space { * must be enforced here for CRIS, to let the least significant bit * of struct page's "mapping" pointer be used for PAGE_MAPPING_ANON. */ -struct request_queue; - -struct block_device { - dev_t bd_dev; /* not a kdev_t - it's a search key */ - int bd_openers; - struct inode * bd_inode; /* will die */ - struct super_block * bd_super; - struct mutex bd_mutex; /* open/close mutex */ - void * bd_claiming; - void * bd_holder; - int bd_holders; - bool bd_write_holder; -#ifdef CONFIG_SYSFS - struct list_head bd_holder_disks; -#endif - struct block_device * bd_contains; - unsigned bd_block_size; - u8 bd_partno; - struct hd_struct * bd_part; - /* number of times partitions within this device have been opened. */ - unsigned bd_part_count; - int bd_invalidated; - struct gendisk * bd_disk; - struct request_queue * bd_queue; - struct backing_dev_info *bd_bdi; - struct list_head bd_list; - /* - * Private data. You must have bd_claim'ed the block_device - * to use this. NOTE: bd_claim allows an owner to claim - * the same device multiple times, the owner must take special - * care to not mess up bd_private for that case. - */ - unsigned long bd_private; - - /* The counter of freeze processes */ - int bd_fsfreeze_count; - /* Mutex for freeze */ - struct mutex bd_fsfreeze_mutex; -} __randomize_layout; /* XArray tags, for tagging dirty and writeback pages in the pagecache. */ #define PAGECACHE_TAG_DIRTY XA_MARK_0 @@ -907,8 +877,6 @@ static inline unsigned imajor(const struct inode *inode) return MAJOR(inode->i_rdev); } -extern struct block_device *I_BDEV(struct inode *inode); - struct fown_struct { rwlock_t lock; /* protects pid, uid, euid fields */ struct pid *pid; /* pid or -pgrp where SIGIO should be sent */ @@ -1380,6 +1348,7 @@ extern int send_sigurg(struct fown_struct *fown); #define SB_NODIRATIME 2048 /* Do not update directory access times */ #define SB_SILENT 32768 #define SB_POSIXACL (1<<16) /* VFS does not apply the umask */ +#define SB_INLINECRYPT (1<<17) /* Use blk-crypto for encrypted files */ #define SB_KERNMOUNT (1<<22) /* this is a kern_mount call */ #define SB_I_VERSION (1<<23) /* Update inode I_version field */ #define SB_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */ @@ -1774,14 +1743,6 @@ struct dir_context { loff_t pos; }; -struct block_device_operations; - -/* These macros are for out of kernel modules to test that - * the kernel supports the unlocked_ioctl and compat_ioctl - * fields in struct file_operations. */ -#define HAVE_COMPAT_IOCTL 1 -#define HAVE_UNLOCKED_IOCTL 1 - /* * These flags let !MMU mmap() govern direct device mapping vs immediate * copying more easily for MAP_PRIVATE, especially for ROM filesystems. @@ -1917,7 +1878,6 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, struct iovec *fast_pointer, struct iovec **ret_pointer); -extern ssize_t __vfs_read(struct file *, char __user *, size_t, loff_t *); extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *); extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *); extern ssize_t vfs_readv(struct file *, const struct iovec __user *, @@ -2264,18 +2224,9 @@ struct file_system_type { #define MODULE_ALIAS_FS(NAME) MODULE_ALIAS("fs-" NAME) -#ifdef CONFIG_BLOCK extern struct dentry *mount_bdev(struct file_system_type *fs_type, int flags, const char *dev_name, void *data, int (*fill_super)(struct super_block *, void *, int)); -#else -static inline struct dentry *mount_bdev(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data, - int (*fill_super)(struct super_block *, void *, int)) -{ - return ERR_PTR(-ENODEV); -} -#endif extern struct dentry *mount_single(struct file_system_type *fs_type, int flags, void *data, int (*fill_super)(struct super_block *, void *, int)); @@ -2284,14 +2235,7 @@ extern struct dentry *mount_nodev(struct file_system_type *fs_type, int (*fill_super)(struct super_block *, void *, int)); extern struct dentry *mount_subtree(struct vfsmount *mnt, const char *path); void generic_shutdown_super(struct super_block *sb); -#ifdef CONFIG_BLOCK void kill_block_super(struct super_block *sb); -#else -static inline void kill_block_super(struct super_block *sb) -{ - BUG(); -} -#endif void kill_anon_super(struct super_block *sb); void kill_litter_super(struct super_block *sb); void deactivate_super(struct super_block *sb); @@ -2581,93 +2525,16 @@ extern struct kmem_cache *names_cachep; #define __getname() kmem_cache_alloc(names_cachep, GFP_KERNEL) #define __putname(name) kmem_cache_free(names_cachep, (void *)(name)) -#ifdef CONFIG_BLOCK -extern int register_blkdev(unsigned int, const char *); -extern void unregister_blkdev(unsigned int, const char *); -extern struct block_device *bdget(dev_t); -extern struct block_device *bdgrab(struct block_device *bdev); -extern void bd_set_size(struct block_device *, loff_t size); -extern void bd_forget(struct inode *inode); -extern void bdput(struct block_device *); -extern void invalidate_bdev(struct block_device *); -extern void iterate_bdevs(void (*)(struct block_device *, void *), void *); -extern int sync_blockdev(struct block_device *bdev); -extern struct super_block *freeze_bdev(struct block_device *); -extern void emergency_thaw_all(void); -extern void emergency_thaw_bdev(struct super_block *sb); -extern int thaw_bdev(struct block_device *bdev, struct super_block *sb); -extern int fsync_bdev(struct block_device *); - extern struct super_block *blockdev_superblock; - static inline bool sb_is_blkdev_sb(struct super_block *sb) { - return sb == blockdev_superblock; -} -#else -static inline void bd_forget(struct inode *inode) {} -static inline int sync_blockdev(struct block_device *bdev) { return 0; } -static inline void invalidate_bdev(struct block_device *bdev) {} - -static inline struct super_block *freeze_bdev(struct block_device *sb) -{ - return NULL; -} - -static inline int thaw_bdev(struct block_device *bdev, struct super_block *sb) -{ - return 0; + return IS_ENABLED(CONFIG_BLOCK) && sb == blockdev_superblock; } -static inline int emergency_thaw_bdev(struct super_block *sb) -{ - return 0; -} - -static inline void iterate_bdevs(void (*f)(struct block_device *, void *), void *arg) -{ -} - -static inline bool sb_is_blkdev_sb(struct super_block *sb) -{ - return false; -} -#endif +void emergency_thaw_all(void); extern int sync_filesystem(struct super_block *); extern const struct file_operations def_blk_fops; extern const struct file_operations def_chr_fops; -#ifdef CONFIG_BLOCK -extern int blkdev_ioctl(struct block_device *, fmode_t, unsigned, unsigned long); -extern long compat_blkdev_ioctl(struct file *, unsigned, unsigned long); -extern int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder); -extern struct block_device *blkdev_get_by_path(const char *path, fmode_t mode, - void *holder); -extern struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, - void *holder); -extern struct block_device *bd_start_claiming(struct block_device *bdev, - void *holder); -extern void bd_finish_claiming(struct block_device *bdev, - struct block_device *whole, void *holder); -extern void bd_abort_claiming(struct block_device *bdev, - struct block_device *whole, void *holder); -extern void blkdev_put(struct block_device *bdev, fmode_t mode); - -#ifdef CONFIG_SYSFS -extern int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk); -extern void bd_unlink_disk_holder(struct block_device *bdev, - struct gendisk *disk); -#else -static inline int bd_link_disk_holder(struct block_device *bdev, - struct gendisk *disk) -{ - return 0; -} -static inline void bd_unlink_disk_holder(struct block_device *bdev, - struct gendisk *disk) -{ -} -#endif -#endif /* fs/char_dev.c */ #define CHRDEV_MAJOR_MAX 512 @@ -2698,31 +2565,12 @@ static inline void unregister_chrdev(unsigned int major, const char *name) __unregister_chrdev(major, 0, 256, name); } -/* fs/block_dev.c */ -#define BDEVNAME_SIZE 32 /* Largest string for a blockdev identifier */ -#define BDEVT_SIZE 10 /* Largest string for MAJ:MIN for blkdev */ - -#ifdef CONFIG_BLOCK -#define BLKDEV_MAJOR_MAX 512 -extern const char *bdevname(struct block_device *bdev, char *buffer); -extern struct block_device *lookup_bdev(const char *); -extern void blkdev_show(struct seq_file *,off_t); - -#else -#define BLKDEV_MAJOR_MAX 0 -#endif - extern void init_special_inode(struct inode *, umode_t, dev_t); /* Invalid inode operations -- fs/bad_inode.c */ extern void make_bad_inode(struct inode *); extern bool is_bad_inode(struct inode *); -#ifdef CONFIG_BLOCK -extern int revalidate_disk(struct gendisk *); -extern int check_disk_change(struct block_device *); -extern int __invalidate_device(struct block_device *, bool); -#endif unsigned long invalidate_mapping_pages(struct address_space *mapping, pgoff_t start, pgoff_t end); @@ -3033,6 +2881,7 @@ extern int kernel_read_file_from_path_initns(const char *, void **, loff_t *, lo extern int kernel_read_file_from_fd(int, void **, loff_t *, loff_t, enum kernel_read_file_id); extern ssize_t kernel_read(struct file *, void *, size_t, loff_t *); +ssize_t __kernel_read(struct file *file, void *buf, size_t count, loff_t *pos); extern ssize_t kernel_write(struct file *, const void *, size_t, loff_t *); extern ssize_t __kernel_write(struct file *, const void *, size_t, loff_t *); extern struct file * open_exec(const char *); @@ -3122,10 +2971,6 @@ static inline void remove_inode_hash(struct inode *inode) extern void inode_sb_list_add(struct inode *inode); -#ifdef CONFIG_BLOCK -extern int bdev_read_only(struct block_device *); -#endif -extern int set_blocksize(struct block_device *, int); extern int sb_set_blocksize(struct super_block *, int); extern int sb_min_blocksize(struct super_block *, int); @@ -3438,22 +3283,28 @@ static inline int iocb_flags(struct file *file) static inline int kiocb_set_rw_flags(struct kiocb *ki, rwf_t flags) { + int kiocb_flags = 0; + + if (!flags) + return 0; if (unlikely(flags & ~RWF_SUPPORTED)) return -EOPNOTSUPP; if (flags & RWF_NOWAIT) { if (!(ki->ki_filp->f_mode & FMODE_NOWAIT)) return -EOPNOTSUPP; - ki->ki_flags |= IOCB_NOWAIT; + kiocb_flags |= IOCB_NOWAIT; } if (flags & RWF_HIPRI) - ki->ki_flags |= IOCB_HIPRI; + kiocb_flags |= IOCB_HIPRI; if (flags & RWF_DSYNC) - ki->ki_flags |= IOCB_DSYNC; + kiocb_flags |= IOCB_DSYNC; if (flags & RWF_SYNC) - ki->ki_flags |= (IOCB_DSYNC | IOCB_SYNC); + kiocb_flags |= (IOCB_DSYNC | IOCB_SYNC); if (flags & RWF_APPEND) - ki->ki_flags |= IOCB_APPEND; + kiocb_flags |= IOCB_APPEND; + + ki->ki_flags |= kiocb_flags; return 0; } diff --git a/include/linux/fs_context.h b/include/linux/fs_context.h index 5f24fcbfbfb4..37e1e8f7f08d 100644 --- a/include/linux/fs_context.h +++ b/include/linux/fs_context.h @@ -109,6 +109,7 @@ struct fs_context { enum fs_context_phase phase:8; /* The phase the context is in */ bool need_free:1; /* Need to call ops->free() */ bool global:1; /* Goes into &init_user_ns */ + bool oldapi:1; /* Coming from mount(2) */ }; struct fs_context_operations { diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h index 2862ca5fea33..991ff8575d0e 100644 --- a/include/linux/fscrypt.h +++ b/include/linux/fscrypt.h @@ -69,12 +69,20 @@ struct fscrypt_operations { bool (*has_stable_inodes)(struct super_block *sb); void (*get_ino_and_lblk_bits)(struct super_block *sb, int *ino_bits_ret, int *lblk_bits_ret); + int (*get_num_devices)(struct super_block *sb); + void (*get_devices)(struct super_block *sb, + struct request_queue **devs); }; -static inline bool fscrypt_has_encryption_key(const struct inode *inode) +static inline struct fscrypt_info *fscrypt_get_info(const struct inode *inode) { - /* pairs with cmpxchg_release() in fscrypt_get_encryption_info() */ - return READ_ONCE(inode->i_crypt_info) != NULL; + /* + * Pairs with the cmpxchg_release() in fscrypt_get_encryption_info(). + * I.e., another task may publish ->i_crypt_info concurrently, executing + * a RELEASE barrier. We need to use smp_load_acquire() here to safely + * ACQUIRE the memory the other task published. + */ + return smp_load_acquire(&inode->i_crypt_info); } /** @@ -231,9 +239,9 @@ static inline void fscrypt_set_ops(struct super_block *sb, } #else /* !CONFIG_FS_ENCRYPTION */ -static inline bool fscrypt_has_encryption_key(const struct inode *inode) +static inline struct fscrypt_info *fscrypt_get_info(const struct inode *inode) { - return false; + return NULL; } static inline bool fscrypt_needs_contents_encryption(const struct inode *inode) @@ -537,6 +545,99 @@ static inline void fscrypt_set_ops(struct super_block *sb, #endif /* !CONFIG_FS_ENCRYPTION */ +/* inline_crypt.c */ +#ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT + +bool __fscrypt_inode_uses_inline_crypto(const struct inode *inode); + +void fscrypt_set_bio_crypt_ctx(struct bio *bio, + const struct inode *inode, u64 first_lblk, + gfp_t gfp_mask); + +void fscrypt_set_bio_crypt_ctx_bh(struct bio *bio, + const struct buffer_head *first_bh, + gfp_t gfp_mask); + +bool fscrypt_mergeable_bio(struct bio *bio, const struct inode *inode, + u64 next_lblk); + +bool fscrypt_mergeable_bio_bh(struct bio *bio, + const struct buffer_head *next_bh); + +#else /* CONFIG_FS_ENCRYPTION_INLINE_CRYPT */ + +static inline bool __fscrypt_inode_uses_inline_crypto(const struct inode *inode) +{ + return false; +} + +static inline void fscrypt_set_bio_crypt_ctx(struct bio *bio, + const struct inode *inode, + u64 first_lblk, gfp_t gfp_mask) { } + +static inline void fscrypt_set_bio_crypt_ctx_bh( + struct bio *bio, + const struct buffer_head *first_bh, + gfp_t gfp_mask) { } + +static inline bool fscrypt_mergeable_bio(struct bio *bio, + const struct inode *inode, + u64 next_lblk) +{ + return true; +} + +static inline bool fscrypt_mergeable_bio_bh(struct bio *bio, + const struct buffer_head *next_bh) +{ + return true; +} +#endif /* !CONFIG_FS_ENCRYPTION_INLINE_CRYPT */ + +/** + * fscrypt_inode_uses_inline_crypto() - test whether an inode uses inline + * encryption + * @inode: an inode. If encrypted, its key must be set up. + * + * Return: true if the inode requires file contents encryption and if the + * encryption should be done in the block layer via blk-crypto rather + * than in the filesystem layer. + */ +static inline bool fscrypt_inode_uses_inline_crypto(const struct inode *inode) +{ + return fscrypt_needs_contents_encryption(inode) && + __fscrypt_inode_uses_inline_crypto(inode); +} + +/** + * fscrypt_inode_uses_fs_layer_crypto() - test whether an inode uses fs-layer + * encryption + * @inode: an inode. If encrypted, its key must be set up. + * + * Return: true if the inode requires file contents encryption and if the + * encryption should be done in the filesystem layer rather than in the + * block layer via blk-crypto. + */ +static inline bool fscrypt_inode_uses_fs_layer_crypto(const struct inode *inode) +{ + return fscrypt_needs_contents_encryption(inode) && + !__fscrypt_inode_uses_inline_crypto(inode); +} + +/** + * fscrypt_has_encryption_key() - check whether an inode has had its key set up + * @inode: the inode to check + * + * Return: %true if the inode has had its encryption key set up, else %false. + * + * Usually this should be preceded by fscrypt_get_encryption_info() to try to + * set up the key first. + */ +static inline bool fscrypt_has_encryption_key(const struct inode *inode) +{ + return fscrypt_get_info(inode) != NULL; +} + /** * fscrypt_require_key() - require an inode's encryption key * @inode: the inode we need the key for diff --git a/include/linux/fsverity.h b/include/linux/fsverity.h index 78201a6d35f6..c1144a450392 100644 --- a/include/linux/fsverity.h +++ b/include/linux/fsverity.h @@ -115,8 +115,13 @@ struct fsverity_operations { static inline struct fsverity_info *fsverity_get_info(const struct inode *inode) { - /* pairs with the cmpxchg() in fsverity_set_info() */ - return READ_ONCE(inode->i_verity_info); + /* + * Pairs with the cmpxchg_release() in fsverity_set_info(). + * I.e., another task may publish ->i_verity_info concurrently, + * executing a RELEASE barrier. We need to use smp_load_acquire() here + * to safely ACQUIRE the memory the other task published. + */ + return smp_load_acquire(&inode->i_verity_info); } /* enable.c */ diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index e339dac91ee6..ce2c06f72e86 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -58,9 +58,6 @@ struct ftrace_direct_func; const char * ftrace_mod_address_lookup(unsigned long addr, unsigned long *size, unsigned long *off, char **modname, char *sym); -int ftrace_mod_get_kallsym(unsigned int symnum, unsigned long *value, - char *type, char *name, - char *module_name, int *exported); #else static inline const char * ftrace_mod_address_lookup(unsigned long addr, unsigned long *size, @@ -68,6 +65,13 @@ ftrace_mod_address_lookup(unsigned long addr, unsigned long *size, { return NULL; } +#endif + +#if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_DYNAMIC_FTRACE) +int ftrace_mod_get_kallsym(unsigned int symnum, unsigned long *value, + char *type, char *name, + char *module_name, int *exported); +#else static inline int ftrace_mod_get_kallsym(unsigned int symnum, unsigned long *value, char *type, char *name, char *module_name, int *exported) @@ -76,7 +80,6 @@ static inline int ftrace_mod_get_kallsym(unsigned int symnum, unsigned long *val } #endif - #ifdef CONFIG_FUNCTION_TRACER extern int ftrace_enabled; @@ -207,6 +210,7 @@ struct ftrace_ops { struct ftrace_ops_hash old_hash; unsigned long trampoline; unsigned long trampoline_size; + struct list_head list; #endif }; diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 392aad5e29a2..4ab853461dff 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -19,13 +19,12 @@ #include <linux/blk_types.h> #include <asm/local.h> -#ifdef CONFIG_BLOCK - #define dev_to_disk(device) container_of((device), struct gendisk, part0.__dev) #define dev_to_part(device) container_of((device), struct hd_struct, __dev) #define disk_to_dev(disk) (&(disk)->part0.__dev) #define part_to_dev(part) (&((part)->__dev)) +extern const struct device_type disk_type; extern struct device_type part_type; extern struct class block_class; @@ -337,12 +336,9 @@ static inline void set_capacity(struct gendisk *disk, sector_t size) disk->part0.nr_sects = size; } -extern dev_t blk_lookup_devt(const char *name, int partno); - int bdev_disk_changed(struct block_device *bdev, bool invalidate); int blk_add_partitions(struct gendisk *disk, struct block_device *bdev); int blk_drop_partitions(struct block_device *bdev); -extern void printk_all_partitions(void); extern struct gendisk *__alloc_disk_node(int minors, int node_id); extern struct kobject *get_disk_and_module(struct gendisk *disk); @@ -373,10 +369,40 @@ extern void blk_unregister_region(dev_t devt, unsigned long range); #define alloc_disk(minors) alloc_disk_node(minors, NUMA_NO_NODE) -#else /* CONFIG_BLOCK */ +int register_blkdev(unsigned int major, const char *name); +void unregister_blkdev(unsigned int major, const char *name); -static inline void printk_all_partitions(void) { } +int revalidate_disk(struct gendisk *disk); +int check_disk_change(struct block_device *bdev); +int __invalidate_device(struct block_device *bdev, bool kill_dirty); +void bd_set_size(struct block_device *bdev, loff_t size); +/* for drivers/char/raw.c: */ +int blkdev_ioctl(struct block_device *, fmode_t, unsigned, unsigned long); +long compat_blkdev_ioctl(struct file *, unsigned, unsigned long); + +#ifdef CONFIG_SYSFS +int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk); +void bd_unlink_disk_holder(struct block_device *bdev, struct gendisk *disk); +#else +static inline int bd_link_disk_holder(struct block_device *bdev, + struct gendisk *disk) +{ + return 0; +} +static inline void bd_unlink_disk_holder(struct block_device *bdev, + struct gendisk *disk) +{ +} +#endif /* CONFIG_SYSFS */ + +#ifdef CONFIG_BLOCK +void printk_all_partitions(void); +dev_t blk_lookup_devt(const char *name, int partno); +#else /* CONFIG_BLOCK */ +static inline void printk_all_partitions(void) +{ +} static inline dev_t blk_lookup_devt(const char *name, int partno) { dev_t devt = MKDEV(0, 0); diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index 03c9fece7d43..754f67ac4326 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -111,32 +111,42 @@ extern void rcu_nmi_exit(void); /* * nmi_enter() can nest up to 15 times; see NMI_BITS. */ -#define nmi_enter() \ +#define __nmi_enter() \ do { \ + lockdep_off(); \ arch_nmi_enter(); \ printk_nmi_enter(); \ - lockdep_off(); \ BUG_ON(in_nmi() == NMI_MASK); \ __preempt_count_add(NMI_OFFSET + HARDIRQ_OFFSET); \ - rcu_nmi_enter(); \ + } while (0) + +#define nmi_enter() \ + do { \ + __nmi_enter(); \ lockdep_hardirq_enter(); \ + rcu_nmi_enter(); \ instrumentation_begin(); \ ftrace_nmi_enter(); \ instrumentation_end(); \ } while (0) +#define __nmi_exit() \ + do { \ + BUG_ON(!in_nmi()); \ + __preempt_count_sub(NMI_OFFSET + HARDIRQ_OFFSET); \ + printk_nmi_exit(); \ + arch_nmi_exit(); \ + lockdep_on(); \ + } while (0) + #define nmi_exit() \ do { \ instrumentation_begin(); \ ftrace_nmi_exit(); \ instrumentation_end(); \ - lockdep_hardirq_exit(); \ rcu_nmi_exit(); \ - BUG_ON(!in_nmi()); \ - __preempt_count_sub(NMI_OFFSET + HARDIRQ_OFFSET); \ - lockdep_on(); \ - printk_nmi_exit(); \ - arch_nmi_exit(); \ + lockdep_hardirq_exit(); \ + __nmi_exit(); \ } while (0) #endif /* LINUX_HARDIRQ_H */ diff --git a/include/linux/host1x.h b/include/linux/host1x.h index c230b4e70d75..a3a568bf9686 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -48,6 +48,9 @@ struct host1x_client_ops { * @channel: host1x channel associated with this client * @syncpts: array of syncpoints requested for this client * @num_syncpts: number of syncpoints requested for this client + * @parent: pointer to parent structure + * @usecount: reference count for this structure + * @lock: mutex for mutually exclusive concurrency */ struct host1x_client { struct list_head list; diff --git a/include/linux/i2c.h b/include/linux/i2c.h index b8b8963f8bb9..4e7714c88f95 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -56,7 +56,7 @@ struct property_entry; * on a bus (or read from them). Apart from two basic transfer functions to * transmit one message at a time, a more complex version can be used to * transmit an arbitrary number of messages without interruption. - * @count must be be less than 64k since msg.len is u16. + * @count must be less than 64k since msg.len is u16. */ int i2c_transfer_buffer_flags(const struct i2c_client *client, char *buf, int count, u16 flags); @@ -1001,7 +1001,7 @@ static inline u32 i2c_acpi_find_bus_speed(struct device *dev) static inline struct i2c_client *i2c_acpi_new_device(struct device *dev, int index, struct i2c_board_info *info) { - return NULL; + return ERR_PTR(-ENODEV); } static inline struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle) { diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index fe15f831841b..9f732499ea88 100644 --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -3333,13 +3333,17 @@ struct ieee80211_multiple_bssid_configuration { #define WLAN_AKM_SUITE_TDLS SUITE(0x000FAC, 7) #define WLAN_AKM_SUITE_SAE SUITE(0x000FAC, 8) #define WLAN_AKM_SUITE_FT_OVER_SAE SUITE(0x000FAC, 9) +#define WLAN_AKM_SUITE_AP_PEER_KEY SUITE(0x000FAC, 10) #define WLAN_AKM_SUITE_8021X_SUITE_B SUITE(0x000FAC, 11) #define WLAN_AKM_SUITE_8021X_SUITE_B_192 SUITE(0x000FAC, 12) +#define WLAN_AKM_SUITE_FT_8021X_SHA384 SUITE(0x000FAC, 13) #define WLAN_AKM_SUITE_FILS_SHA256 SUITE(0x000FAC, 14) #define WLAN_AKM_SUITE_FILS_SHA384 SUITE(0x000FAC, 15) #define WLAN_AKM_SUITE_FT_FILS_SHA256 SUITE(0x000FAC, 16) #define WLAN_AKM_SUITE_FT_FILS_SHA384 SUITE(0x000FAC, 17) #define WLAN_AKM_SUITE_OWE SUITE(0x000FAC, 18) +#define WLAN_AKM_SUITE_FT_PSK_SHA384 SUITE(0x000FAC, 19) +#define WLAN_AKM_SUITE_PSK_SHA384 SUITE(0x000FAC, 20) #define WLAN_MAX_KEY_LEN 32 diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index b05e855f1ddd..41a518336673 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -25,6 +25,8 @@ #define VLAN_ETH_DATA_LEN 1500 /* Max. octets in payload */ #define VLAN_ETH_FRAME_LEN 1518 /* Max. octets in frame sans FCS */ +#define VLAN_MAX_DEPTH 8 /* Max. number of nested VLAN tags parsed */ + /* * struct vlan_hdr - vlan header * @h_vlan_TCI: priority and VLAN ID @@ -577,10 +579,10 @@ static inline int vlan_get_tag(const struct sk_buff *skb, u16 *vlan_tci) * Returns the EtherType of the packet, regardless of whether it is * vlan encapsulated (normal or hardware accelerated) or not. */ -static inline __be16 __vlan_get_protocol(struct sk_buff *skb, __be16 type, +static inline __be16 __vlan_get_protocol(const struct sk_buff *skb, __be16 type, int *depth) { - unsigned int vlan_depth = skb->mac_len; + unsigned int vlan_depth = skb->mac_len, parse_depth = VLAN_MAX_DEPTH; /* if type is 802.1Q/AD then the header should already be * present at mac_len - VLAN_HLEN (if mac_len > 0), or at @@ -595,13 +597,12 @@ static inline __be16 __vlan_get_protocol(struct sk_buff *skb, __be16 type, vlan_depth = ETH_HLEN; } do { - struct vlan_hdr *vh; + struct vlan_hdr vhdr, *vh; - if (unlikely(!pskb_may_pull(skb, - vlan_depth + VLAN_HLEN))) + vh = skb_header_pointer(skb, vlan_depth, sizeof(vhdr), &vhdr); + if (unlikely(!vh || !--parse_depth)) return 0; - vh = (struct vlan_hdr *)(skb->data + vlan_depth); type = vh->h_vlan_encapsulated_proto; vlan_depth += VLAN_HLEN; } while (eth_type_vlan(type)); @@ -620,11 +621,25 @@ static inline __be16 __vlan_get_protocol(struct sk_buff *skb, __be16 type, * Returns the EtherType of the packet, regardless of whether it is * vlan encapsulated (normal or hardware accelerated) or not. */ -static inline __be16 vlan_get_protocol(struct sk_buff *skb) +static inline __be16 vlan_get_protocol(const struct sk_buff *skb) { return __vlan_get_protocol(skb, skb->protocol, NULL); } +/* A getter for the SKB protocol field which will handle VLAN tags consistently + * whether VLAN acceleration is enabled or not. + */ +static inline __be16 skb_protocol(const struct sk_buff *skb, bool skip_vlan) +{ + if (!skip_vlan) + /* VLAN acceleration strips the VLAN header from the skb and + * moves it to skb->vlan_proto + */ + return skb_vlan_tag_present(skb) ? skb->vlan_proto : skb->protocol; + + return vlan_get_protocol(skb); +} + static inline void vlan_set_encap_proto(struct sk_buff *skb, struct vlan_hdr *vhdr) { diff --git a/include/linux/input/elan-i2c-ids.h b/include/linux/input/elan-i2c-ids.h index 1ecb6b45812c..520858d12680 100644 --- a/include/linux/input/elan-i2c-ids.h +++ b/include/linux/input/elan-i2c-ids.h @@ -67,8 +67,15 @@ static const struct acpi_device_id elan_acpi_id[] = { { "ELAN062B", 0 }, { "ELAN062C", 0 }, { "ELAN062D", 0 }, + { "ELAN062E", 0 }, /* Lenovo V340 Whiskey Lake U */ + { "ELAN062F", 0 }, /* Lenovo V340 Comet Lake U */ { "ELAN0631", 0 }, { "ELAN0632", 0 }, + { "ELAN0633", 0 }, /* Lenovo S145 */ + { "ELAN0634", 0 }, /* Lenovo V340 Ice lake */ + { "ELAN0635", 0 }, /* Lenovo V1415-IIL */ + { "ELAN0636", 0 }, /* Lenovo V1415-Dali */ + { "ELAN0637", 0 }, /* Lenovo V1415-IGLR */ { "ELAN1000", 0 }, { } }; diff --git a/include/linux/instrumentation.h b/include/linux/instrumentation.h new file mode 100644 index 000000000000..93e2ad67fc10 --- /dev/null +++ b/include/linux/instrumentation.h @@ -0,0 +1,57 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_INSTRUMENTATION_H +#define __LINUX_INSTRUMENTATION_H + +#if defined(CONFIG_DEBUG_ENTRY) && defined(CONFIG_STACK_VALIDATION) + +/* Begin/end of an instrumentation safe region */ +#define instrumentation_begin() ({ \ + asm volatile("%c0: nop\n\t" \ + ".pushsection .discard.instr_begin\n\t" \ + ".long %c0b - .\n\t" \ + ".popsection\n\t" : : "i" (__COUNTER__)); \ +}) + +/* + * Because instrumentation_{begin,end}() can nest, objtool validation considers + * _begin() a +1 and _end() a -1 and computes a sum over the instructions. + * When the value is greater than 0, we consider instrumentation allowed. + * + * There is a problem with code like: + * + * noinstr void foo() + * { + * instrumentation_begin(); + * ... + * if (cond) { + * instrumentation_begin(); + * ... + * instrumentation_end(); + * } + * bar(); + * instrumentation_end(); + * } + * + * If instrumentation_end() would be an empty label, like all the other + * annotations, the inner _end(), which is at the end of a conditional block, + * would land on the instruction after the block. + * + * If we then consider the sum of the !cond path, we'll see that the call to + * bar() is with a 0-value, even though, we meant it to happen with a positive + * value. + * + * To avoid this, have _end() be a NOP instruction, this ensures it will be + * part of the condition block and does not escape. + */ +#define instrumentation_end() ({ \ + asm volatile("%c0: nop\n\t" \ + ".pushsection .discard.instr_end\n\t" \ + ".long %c0b - .\n\t" \ + ".popsection\n\t" : : "i" (__COUNTER__)); \ +}) +#else +# define instrumentation_begin() do { } while(0) +# define instrumentation_end() do { } while(0) +#endif + +#endif /* __LINUX_INSTRUMENTATION_H */ diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 4100bd224f5c..3e8fa1c7a1e6 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -41,6 +41,7 @@ #define DMA_PTE_SNP BIT_ULL(11) #define DMA_FL_PTE_PRESENT BIT_ULL(0) +#define DMA_FL_PTE_US BIT_ULL(2) #define DMA_FL_PTE_XD BIT_ULL(63) #define ADDR_WIDTH_5LEVEL (57) diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h index 0beaa3eba155..c75e4d3d8833 100644 --- a/include/linux/io-mapping.h +++ b/include/linux/io-mapping.h @@ -107,9 +107,12 @@ io_mapping_init_wc(struct io_mapping *iomap, resource_size_t base, unsigned long size) { + iomap->iomem = ioremap_wc(base, size); + if (!iomap->iomem) + return NULL; + iomap->base = base; iomap->size = size; - iomap->iomem = ioremap_wc(base, size); #if defined(pgprot_noncached_wc) /* archs can't agree on a name ... */ iomap->prot = pgprot_noncached_wc(PAGE_KERNEL); #elif defined(pgprot_writecombine) diff --git a/include/linux/irq.h b/include/linux/irq.h index 8d5bc2c237d7..1b7f4dfee35b 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -213,6 +213,8 @@ struct irq_data { * required * IRQD_HANDLE_ENFORCE_IRQCTX - Enforce that handle_irq_*() is only invoked * from actual interrupt context. + * IRQD_AFFINITY_ON_ACTIVATE - Affinity is set on activation. Don't call + * irq_chip::irq_set_affinity() when deactivated. */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -237,6 +239,7 @@ enum { IRQD_CAN_RESERVE = (1 << 26), IRQD_MSI_NOMASK_QUIRK = (1 << 27), IRQD_HANDLE_ENFORCE_IRQCTX = (1 << 28), + IRQD_AFFINITY_ON_ACTIVATE = (1 << 29), }; #define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors) @@ -421,6 +424,16 @@ static inline bool irqd_msi_nomask_quirk(struct irq_data *d) return __irqd_to_state(d) & IRQD_MSI_NOMASK_QUIRK; } +static inline void irqd_set_affinity_on_activate(struct irq_data *d) +{ + __irqd_to_state(d) |= IRQD_AFFINITY_ON_ACTIVATE; +} + +static inline bool irqd_affinity_on_activate(struct irq_data *d) +{ + return __irqd_to_state(d) & IRQD_AFFINITY_ON_ACTIVATE; +} + #undef __irqd_to_state static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index 2735da5f839e..30823780c192 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -2,7 +2,7 @@ #ifndef _LINUX_IRQ_WORK_H #define _LINUX_IRQ_WORK_H -#include <linux/llist.h> +#include <linux/smp_types.h> /* * An entry can be in one of four states: @@ -13,24 +13,14 @@ * busy NULL, 2 -> {free, claimed} : callback in progress, can be claimed */ -/* flags share CSD_FLAG_ space */ - -#define IRQ_WORK_PENDING BIT(0) -#define IRQ_WORK_BUSY BIT(1) - -/* Doesn't want IPI, wait for tick: */ -#define IRQ_WORK_LAZY BIT(2) -/* Run hard IRQ context, even on RT */ -#define IRQ_WORK_HARD_IRQ BIT(3) - -#define IRQ_WORK_CLAIMED (IRQ_WORK_PENDING | IRQ_WORK_BUSY) - -/* - * structure shares layout with single_call_data_t. - */ struct irq_work { - struct llist_node llnode; - atomic_t flags; + union { + struct __call_single_node node; + struct { + struct llist_node llnode; + atomic_t flags; + }; + }; void (*func)(struct irq_work *); }; diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h index 6384d2813ded..bd5c55755447 100644 --- a/include/linux/irqflags.h +++ b/include/linux/irqflags.h @@ -14,6 +14,7 @@ #include <linux/typecheck.h> #include <asm/irqflags.h> +#include <asm/percpu.h> /* Currently lockdep_softirqs_on/off is used only by lockdep */ #ifdef CONFIG_PROVE_LOCKING @@ -31,18 +32,35 @@ #endif #ifdef CONFIG_TRACE_IRQFLAGS + +/* Per-task IRQ trace events information. */ +struct irqtrace_events { + unsigned int irq_events; + unsigned long hardirq_enable_ip; + unsigned long hardirq_disable_ip; + unsigned int hardirq_enable_event; + unsigned int hardirq_disable_event; + unsigned long softirq_disable_ip; + unsigned long softirq_enable_ip; + unsigned int softirq_disable_event; + unsigned int softirq_enable_event; +}; + +DECLARE_PER_CPU(int, hardirqs_enabled); +DECLARE_PER_CPU(int, hardirq_context); + extern void trace_hardirqs_on_prepare(void); extern void trace_hardirqs_off_finish(void); extern void trace_hardirqs_on(void); extern void trace_hardirqs_off(void); -# define lockdep_hardirq_context(p) ((p)->hardirq_context) +# define lockdep_hardirq_context() (this_cpu_read(hardirq_context)) # define lockdep_softirq_context(p) ((p)->softirq_context) -# define lockdep_hardirqs_enabled(p) ((p)->hardirqs_enabled) +# define lockdep_hardirqs_enabled() (this_cpu_read(hardirqs_enabled)) # define lockdep_softirqs_enabled(p) ((p)->softirqs_enabled) -# define lockdep_hardirq_enter() \ -do { \ - if (!current->hardirq_context++) \ - current->hardirq_threaded = 0; \ +# define lockdep_hardirq_enter() \ +do { \ + if (this_cpu_inc_return(hardirq_context) == 1) \ + current->hardirq_threaded = 0; \ } while (0) # define lockdep_hardirq_threaded() \ do { \ @@ -50,7 +68,7 @@ do { \ } while (0) # define lockdep_hardirq_exit() \ do { \ - current->hardirq_context--; \ + this_cpu_dec(hardirq_context); \ } while (0) # define lockdep_softirq_enter() \ do { \ @@ -104,9 +122,9 @@ do { \ # define trace_hardirqs_off_finish() do { } while (0) # define trace_hardirqs_on() do { } while (0) # define trace_hardirqs_off() do { } while (0) -# define lockdep_hardirq_context(p) 0 +# define lockdep_hardirq_context() 0 # define lockdep_softirq_context(p) 0 -# define lockdep_hardirqs_enabled(p) 0 +# define lockdep_hardirqs_enabled() 0 # define lockdep_softirqs_enabled(p) 0 # define lockdep_hardirq_enter() do { } while (0) # define lockdep_hardirq_threaded() do { } while (0) diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index d56128df2aff..4aaa29772bb0 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -27,6 +27,7 @@ #include <linux/timer.h> #include <linux/slab.h> #include <linux/bit_spinlock.h> +#include <linux/blkdev.h> #include <crypto/hash.h> #endif diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h index 98338dc6b5d2..481273f0c72d 100644 --- a/include/linux/kallsyms.h +++ b/include/linux/kallsyms.h @@ -18,6 +18,7 @@ #define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + (KSYM_NAME_LEN - 1) + \ 2*(BITS_PER_LONG*3/10) + (MODULE_NAME_LEN - 1) + 1) +struct cred; struct module; static inline int is_kernel_inittext(unsigned long addr) @@ -98,7 +99,7 @@ int lookup_symbol_name(unsigned long addr, char *symname); int lookup_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name); /* How and when do we show kallsyms values? */ -extern int kallsyms_show_value(void); +extern bool kallsyms_show_value(const struct cred *cred); #else /* !CONFIG_KALLSYMS */ @@ -158,7 +159,7 @@ static inline int lookup_symbol_attrs(unsigned long addr, unsigned long *size, u return -ERANGE; } -static inline int kallsyms_show_value(void) +static inline bool kallsyms_show_value(const struct cred *cred) { return false; } diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h index c62d76478adc..477b8b7c908f 100644 --- a/include/linux/kgdb.h +++ b/include/linux/kgdb.h @@ -177,6 +177,17 @@ kgdb_arch_handle_exception(int vector, int signo, int err_code, struct pt_regs *regs); /** + * kgdb_arch_handle_qxfer_pkt - Handle architecture specific GDB XML + * packets. + * @remcom_in_buffer: The buffer of the packet we have read. + * @remcom_out_buffer: The buffer of %BUFMAX bytes to write a packet into. + */ + +extern void +kgdb_arch_handle_qxfer_pkt(char *remcom_in_buffer, + char *remcom_out_buffer); + +/** * kgdb_call_nmi_hook - Call kgdb_nmicallback() on the current CPU * @ignored: This parameter is only here to match the prototype. * @@ -276,8 +287,7 @@ struct kgdb_arch { * the I/O driver. * @post_exception: Pointer to a function that will do any cleanup work * for the I/O driver. - * @is_console: 1 if the end device is a console 0 if the I/O device is - * not a console + * @cons: valid if the I/O device is a console; else NULL. */ struct kgdb_io { const char *name; @@ -288,7 +298,7 @@ struct kgdb_io { void (*deinit) (void); void (*pre_exception) (void); void (*post_exception) (void); - int is_console; + struct console *cons; }; extern const struct kgdb_arch arch_kgdb_ops; @@ -315,6 +325,7 @@ extern int kgdb_hex2mem(char *buf, char *mem, int count); extern int kgdb_isremovedbreak(unsigned long addr); extern void kgdb_schedule_breakpoint(void); +extern int kgdb_has_hit_break(unsigned long addr); extern int kgdb_handle_exception(int ex_vector, int signo, int err_code, diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index 6adf90f248d7..45b8cdc9fad7 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -242,6 +242,7 @@ struct kprobe_insn_cache { struct mutex mutex; void *(*alloc)(void); /* allocate insn page */ void (*free)(void *); /* free insn page */ + const char *sym; /* symbol for insn pages */ struct list_head pages; /* list of kprobe_insn_page */ size_t insn_size; /* size of instruction slot */ int nr_garbage; @@ -272,6 +273,10 @@ static inline bool is_kprobe_##__name##_slot(unsigned long addr) \ { \ return __is_insn_slot_addr(&kprobe_##__name##_slots, addr); \ } +#define KPROBE_INSN_PAGE_SYM "kprobe_insn_page" +#define KPROBE_OPTINSN_PAGE_SYM "kprobe_optinsn_page" +int kprobe_cache_get_kallsym(struct kprobe_insn_cache *c, unsigned int *symnum, + unsigned long *value, char *type, char *sym); #else /* __ARCH_WANT_KPROBES_INSN_SLOT */ #define DEFINE_INSN_CACHE_OPS(__name) \ static inline bool is_kprobe_##__name##_slot(unsigned long addr) \ @@ -377,6 +382,11 @@ void dump_kprobe(struct kprobe *kp); void *alloc_insn_page(void); void free_insn_page(void *page); +int kprobe_get_kallsym(unsigned int symnum, unsigned long *value, char *type, + char *sym); + +int arch_kprobe_get_kallsym(unsigned int *symnum, unsigned long *value, + char *type, char *sym); #else /* !CONFIG_KPROBES: */ static inline int kprobes_built_in(void) @@ -439,6 +449,11 @@ static inline bool within_kprobe_blacklist(unsigned long addr) { return true; } +static inline int kprobe_get_kallsym(unsigned int symnum, unsigned long *value, + char *type, char *sym) +{ + return -ERANGE; +} #endif /* CONFIG_KPROBES */ static inline int disable_kretprobe(struct kretprobe *rp) { diff --git a/include/linux/libata.h b/include/linux/libata.h index e7e5256817dc..77ccf040a128 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1095,7 +1095,7 @@ extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, #define ATA_SCSI_COMPAT_IOCTL /* empty */ #endif extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); -#if IS_ENABLED(CONFIG_ATA) +#if IS_REACHABLE(CONFIG_ATA) bool ata_scsi_dma_need_drain(struct request *rq); #else #define ata_scsi_dma_need_drain NULL diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h index ee8ec2e68055..1db223710b28 100644 --- a/include/linux/lightnvm.h +++ b/include/linux/lightnvm.h @@ -631,7 +631,6 @@ static inline int nvm_next_ppa_in_chk(struct nvm_tgt_dev *dev, return last; } -typedef blk_qc_t (nvm_tgt_make_rq_fn)(struct request_queue *, struct bio *); typedef sector_t (nvm_tgt_capacity_fn)(void *); typedef void *(nvm_tgt_init_fn)(struct nvm_tgt_dev *, struct gendisk *, int flags); @@ -650,7 +649,7 @@ struct nvm_tgt_type { int flags; /* target entry points */ - nvm_tgt_make_rq_fn *make_rq; + const struct block_device_operations *bops; nvm_tgt_capacity_fn *capacity; /* module-specific init/teardown */ diff --git a/include/linux/list.h b/include/linux/list.h index aff44d34f4e4..0d0d17a10d25 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -283,6 +283,24 @@ static inline int list_empty(const struct list_head *head) } /** + * list_del_init_careful - deletes entry from list and reinitialize it. + * @entry: the element to delete from the list. + * + * This is the same as list_del_init(), except designed to be used + * together with list_empty_careful() in a way to guarantee ordering + * of other memory operations. + * + * Any memory operations done before a list_del_init_careful() are + * guaranteed to be visible after a list_empty_careful() test. + */ +static inline void list_del_init_careful(struct list_head *entry) +{ + __list_del_entry(entry); + entry->prev = entry; + smp_store_release(&entry->next, entry); +} + +/** * list_empty_careful - tests whether a list is empty and not being modified * @head: the list to test * @@ -297,7 +315,7 @@ static inline int list_empty(const struct list_head *head) */ static inline int list_empty_careful(const struct list_head *head) { - struct list_head *next = head->next; + struct list_head *next = smp_load_acquire(&head->next); return (next == head) && (next == head->prev); } diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 8fce5c98a4b0..39a35699d0d6 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -10,33 +10,15 @@ #ifndef __LINUX_LOCKDEP_H #define __LINUX_LOCKDEP_H +#include <linux/lockdep_types.h> +#include <asm/percpu.h> + struct task_struct; -struct lockdep_map; /* for sysctl */ extern int prove_locking; extern int lock_stat; -#define MAX_LOCKDEP_SUBCLASSES 8UL - -#include <linux/types.h> - -enum lockdep_wait_type { - LD_WAIT_INV = 0, /* not checked, catch all */ - - LD_WAIT_FREE, /* wait free, rcu etc.. */ - LD_WAIT_SPIN, /* spin loops, raw_spinlock_t etc.. */ - -#ifdef CONFIG_PROVE_RAW_LOCK_NESTING - LD_WAIT_CONFIG, /* CONFIG_PREEMPT_LOCK, spinlock_t etc.. */ -#else - LD_WAIT_CONFIG = LD_WAIT_SPIN, -#endif - LD_WAIT_SLEEP, /* sleeping locks, mutex_t etc.. */ - - LD_WAIT_MAX, /* must be last */ -}; - #ifdef CONFIG_LOCKDEP #include <linux/linkage.h> @@ -44,147 +26,6 @@ enum lockdep_wait_type { #include <linux/debug_locks.h> #include <linux/stacktrace.h> -/* - * We'd rather not expose kernel/lockdep_states.h this wide, but we do need - * the total number of states... :-( - */ -#define XXX_LOCK_USAGE_STATES (1+2*4) - -/* - * NR_LOCKDEP_CACHING_CLASSES ... Number of classes - * cached in the instance of lockdep_map - * - * Currently main class (subclass == 0) and signle depth subclass - * are cached in lockdep_map. This optimization is mainly targeting - * on rq->lock. double_rq_lock() acquires this highly competitive with - * single depth. - */ -#define NR_LOCKDEP_CACHING_CLASSES 2 - -/* - * A lockdep key is associated with each lock object. For static locks we use - * the lock address itself as the key. Dynamically allocated lock objects can - * have a statically or dynamically allocated key. Dynamically allocated lock - * keys must be registered before being used and must be unregistered before - * the key memory is freed. - */ -struct lockdep_subclass_key { - char __one_byte; -} __attribute__ ((__packed__)); - -/* hash_entry is used to keep track of dynamically allocated keys. */ -struct lock_class_key { - union { - struct hlist_node hash_entry; - struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES]; - }; -}; - -extern struct lock_class_key __lockdep_no_validate__; - -struct lock_trace; - -#define LOCKSTAT_POINTS 4 - -/* - * The lock-class itself. The order of the structure members matters. - * reinit_class() zeroes the key member and all subsequent members. - */ -struct lock_class { - /* - * class-hash: - */ - struct hlist_node hash_entry; - - /* - * Entry in all_lock_classes when in use. Entry in free_lock_classes - * when not in use. Instances that are being freed are on one of the - * zapped_classes lists. - */ - struct list_head lock_entry; - - /* - * These fields represent a directed graph of lock dependencies, - * to every node we attach a list of "forward" and a list of - * "backward" graph nodes. - */ - struct list_head locks_after, locks_before; - - const struct lockdep_subclass_key *key; - unsigned int subclass; - unsigned int dep_gen_id; - - /* - * IRQ/softirq usage tracking bits: - */ - unsigned long usage_mask; - const struct lock_trace *usage_traces[XXX_LOCK_USAGE_STATES]; - - /* - * Generation counter, when doing certain classes of graph walking, - * to ensure that we check one node only once: - */ - int name_version; - const char *name; - - short wait_type_inner; - short wait_type_outer; - -#ifdef CONFIG_LOCK_STAT - unsigned long contention_point[LOCKSTAT_POINTS]; - unsigned long contending_point[LOCKSTAT_POINTS]; -#endif -} __no_randomize_layout; - -#ifdef CONFIG_LOCK_STAT -struct lock_time { - s64 min; - s64 max; - s64 total; - unsigned long nr; -}; - -enum bounce_type { - bounce_acquired_write, - bounce_acquired_read, - bounce_contended_write, - bounce_contended_read, - nr_bounce_types, - - bounce_acquired = bounce_acquired_write, - bounce_contended = bounce_contended_write, -}; - -struct lock_class_stats { - unsigned long contention_point[LOCKSTAT_POINTS]; - unsigned long contending_point[LOCKSTAT_POINTS]; - struct lock_time read_waittime; - struct lock_time write_waittime; - struct lock_time read_holdtime; - struct lock_time write_holdtime; - unsigned long bounces[nr_bounce_types]; -}; - -struct lock_class_stats lock_stats(struct lock_class *class); -void clear_lock_stats(struct lock_class *class); -#endif - -/* - * Map the lock object (the lock instance) to the lock-class object. - * This is embedded into specific lock instances: - */ -struct lockdep_map { - struct lock_class_key *key; - struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES]; - const char *name; - short wait_type_outer; /* can be taken in this context */ - short wait_type_inner; /* presents this context */ -#ifdef CONFIG_LOCK_STAT - int cpu; - unsigned long ip; -#endif -}; - static inline void lockdep_copy_map(struct lockdep_map *to, struct lockdep_map *from) { @@ -440,8 +281,6 @@ static inline void lock_set_subclass(struct lockdep_map *lock, extern void lock_downgrade(struct lockdep_map *lock, unsigned long ip); -struct pin_cookie { unsigned int val; }; - #define NIL_COOKIE (struct pin_cookie){ .val = 0U, } extern struct pin_cookie lock_pin_lock(struct lockdep_map *lock); @@ -520,10 +359,6 @@ static inline void lockdep_set_selftest_task(struct task_struct *task) # define lockdep_reset() do { debug_locks = 1; } while (0) # define lockdep_free_key_range(start, size) do { } while (0) # define lockdep_sys_exit() do { } while (0) -/* - * The class key takes no space if lockdep is disabled: - */ -struct lock_class_key { }; static inline void lockdep_register_key(struct lock_class_key *key) { @@ -533,11 +368,6 @@ static inline void lockdep_unregister_key(struct lock_class_key *key) { } -/* - * The lockdep_map takes no space if lockdep is disabled: - */ -struct lockdep_map { }; - #define lockdep_depth(tsk) (0) #define lockdep_is_held_type(l, r) (1) @@ -549,8 +379,6 @@ struct lockdep_map { }; #define lockdep_recursing(tsk) (0) -struct pin_cookie { }; - #define NIL_COOKIE (struct pin_cookie){ } #define lockdep_pin_lock(l) ({ struct pin_cookie cookie = { }; cookie; }) @@ -703,38 +531,58 @@ do { \ lock_release(&(lock)->dep_map, _THIS_IP_); \ } while (0) -#define lockdep_assert_irqs_enabled() do { \ - WARN_ONCE(debug_locks && !current->lockdep_recursion && \ - !current->hardirqs_enabled, \ - "IRQs not enabled as expected\n"); \ - } while (0) +DECLARE_PER_CPU(int, hardirqs_enabled); +DECLARE_PER_CPU(int, hardirq_context); -#define lockdep_assert_irqs_disabled() do { \ - WARN_ONCE(debug_locks && !current->lockdep_recursion && \ - current->hardirqs_enabled, \ - "IRQs not disabled as expected\n"); \ - } while (0) +#define lockdep_assert_irqs_enabled() \ +do { \ + WARN_ON_ONCE(debug_locks && !this_cpu_read(hardirqs_enabled)); \ +} while (0) -#define lockdep_assert_in_irq() do { \ - WARN_ONCE(debug_locks && !current->lockdep_recursion && \ - !current->hardirq_context, \ - "Not in hardirq as expected\n"); \ - } while (0) +#define lockdep_assert_irqs_disabled() \ +do { \ + WARN_ON_ONCE(debug_locks && this_cpu_read(hardirqs_enabled)); \ +} while (0) + +#define lockdep_assert_in_irq() \ +do { \ + WARN_ON_ONCE(debug_locks && !this_cpu_read(hardirq_context)); \ +} while (0) + +#define lockdep_assert_preemption_enabled() \ +do { \ + WARN_ON_ONCE(IS_ENABLED(CONFIG_PREEMPT_COUNT) && \ + debug_locks && \ + (preempt_count() != 0 || \ + !this_cpu_read(hardirqs_enabled))); \ +} while (0) + +#define lockdep_assert_preemption_disabled() \ +do { \ + WARN_ON_ONCE(IS_ENABLED(CONFIG_PREEMPT_COUNT) && \ + debug_locks && \ + (preempt_count() == 0 && \ + this_cpu_read(hardirqs_enabled))); \ +} while (0) #else # define might_lock(lock) do { } while (0) # define might_lock_read(lock) do { } while (0) # define might_lock_nested(lock, subclass) do { } while (0) + # define lockdep_assert_irqs_enabled() do { } while (0) # define lockdep_assert_irqs_disabled() do { } while (0) # define lockdep_assert_in_irq() do { } while (0) + +# define lockdep_assert_preemption_enabled() do { } while (0) +# define lockdep_assert_preemption_disabled() do { } while (0) #endif #ifdef CONFIG_PROVE_RAW_LOCK_NESTING # define lockdep_assert_RT_in_threaded_ctx() do { \ WARN_ONCE(debug_locks && !current->lockdep_recursion && \ - current->hardirq_context && \ + lockdep_hardirq_context() && \ !(current->hardirq_threaded || current->irq_config), \ "Not in threaded context on PREEMPT_RT as expected\n"); \ } while (0) diff --git a/include/linux/lockdep_types.h b/include/linux/lockdep_types.h new file mode 100644 index 000000000000..bb35b449f533 --- /dev/null +++ b/include/linux/lockdep_types.h @@ -0,0 +1,194 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Runtime locking correctness validator + * + * Copyright (C) 2006,2007 Red Hat, Inc., Ingo Molnar <mingo@redhat.com> + * Copyright (C) 2007 Red Hat, Inc., Peter Zijlstra + * + * see Documentation/locking/lockdep-design.rst for more details. + */ +#ifndef __LINUX_LOCKDEP_TYPES_H +#define __LINUX_LOCKDEP_TYPES_H + +#include <linux/types.h> + +#define MAX_LOCKDEP_SUBCLASSES 8UL + +enum lockdep_wait_type { + LD_WAIT_INV = 0, /* not checked, catch all */ + + LD_WAIT_FREE, /* wait free, rcu etc.. */ + LD_WAIT_SPIN, /* spin loops, raw_spinlock_t etc.. */ + +#ifdef CONFIG_PROVE_RAW_LOCK_NESTING + LD_WAIT_CONFIG, /* CONFIG_PREEMPT_LOCK, spinlock_t etc.. */ +#else + LD_WAIT_CONFIG = LD_WAIT_SPIN, +#endif + LD_WAIT_SLEEP, /* sleeping locks, mutex_t etc.. */ + + LD_WAIT_MAX, /* must be last */ +}; + +#ifdef CONFIG_LOCKDEP + +/* + * We'd rather not expose kernel/lockdep_states.h this wide, but we do need + * the total number of states... :-( + */ +#define XXX_LOCK_USAGE_STATES (1+2*4) + +/* + * NR_LOCKDEP_CACHING_CLASSES ... Number of classes + * cached in the instance of lockdep_map + * + * Currently main class (subclass == 0) and signle depth subclass + * are cached in lockdep_map. This optimization is mainly targeting + * on rq->lock. double_rq_lock() acquires this highly competitive with + * single depth. + */ +#define NR_LOCKDEP_CACHING_CLASSES 2 + +/* + * A lockdep key is associated with each lock object. For static locks we use + * the lock address itself as the key. Dynamically allocated lock objects can + * have a statically or dynamically allocated key. Dynamically allocated lock + * keys must be registered before being used and must be unregistered before + * the key memory is freed. + */ +struct lockdep_subclass_key { + char __one_byte; +} __attribute__ ((__packed__)); + +/* hash_entry is used to keep track of dynamically allocated keys. */ +struct lock_class_key { + union { + struct hlist_node hash_entry; + struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES]; + }; +}; + +extern struct lock_class_key __lockdep_no_validate__; + +struct lock_trace; + +#define LOCKSTAT_POINTS 4 + +/* + * The lock-class itself. The order of the structure members matters. + * reinit_class() zeroes the key member and all subsequent members. + */ +struct lock_class { + /* + * class-hash: + */ + struct hlist_node hash_entry; + + /* + * Entry in all_lock_classes when in use. Entry in free_lock_classes + * when not in use. Instances that are being freed are on one of the + * zapped_classes lists. + */ + struct list_head lock_entry; + + /* + * These fields represent a directed graph of lock dependencies, + * to every node we attach a list of "forward" and a list of + * "backward" graph nodes. + */ + struct list_head locks_after, locks_before; + + const struct lockdep_subclass_key *key; + unsigned int subclass; + unsigned int dep_gen_id; + + /* + * IRQ/softirq usage tracking bits: + */ + unsigned long usage_mask; + const struct lock_trace *usage_traces[XXX_LOCK_USAGE_STATES]; + + /* + * Generation counter, when doing certain classes of graph walking, + * to ensure that we check one node only once: + */ + int name_version; + const char *name; + + short wait_type_inner; + short wait_type_outer; + +#ifdef CONFIG_LOCK_STAT + unsigned long contention_point[LOCKSTAT_POINTS]; + unsigned long contending_point[LOCKSTAT_POINTS]; +#endif +} __no_randomize_layout; + +#ifdef CONFIG_LOCK_STAT +struct lock_time { + s64 min; + s64 max; + s64 total; + unsigned long nr; +}; + +enum bounce_type { + bounce_acquired_write, + bounce_acquired_read, + bounce_contended_write, + bounce_contended_read, + nr_bounce_types, + + bounce_acquired = bounce_acquired_write, + bounce_contended = bounce_contended_write, +}; + +struct lock_class_stats { + unsigned long contention_point[LOCKSTAT_POINTS]; + unsigned long contending_point[LOCKSTAT_POINTS]; + struct lock_time read_waittime; + struct lock_time write_waittime; + struct lock_time read_holdtime; + struct lock_time write_holdtime; + unsigned long bounces[nr_bounce_types]; +}; + +struct lock_class_stats lock_stats(struct lock_class *class); +void clear_lock_stats(struct lock_class *class); +#endif + +/* + * Map the lock object (the lock instance) to the lock-class object. + * This is embedded into specific lock instances: + */ +struct lockdep_map { + struct lock_class_key *key; + struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES]; + const char *name; + short wait_type_outer; /* can be taken in this context */ + short wait_type_inner; /* presents this context */ +#ifdef CONFIG_LOCK_STAT + int cpu; + unsigned long ip; +#endif +}; + +struct pin_cookie { unsigned int val; }; + +#else /* !CONFIG_LOCKDEP */ + +/* + * The class key takes no space if lockdep is disabled: + */ +struct lock_class_key { }; + +/* + * The lockdep_map takes no space if lockdep is disabled: + */ +struct lockdep_map { }; + +struct pin_cookie { }; + +#endif /* !LOCKDEP */ + +#endif /* __LINUX_LOCKDEP_TYPES_H */ diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h index 6791813cd439..af998f93d256 100644 --- a/include/linux/lsm_hook_defs.h +++ b/include/linux/lsm_hook_defs.h @@ -150,7 +150,7 @@ LSM_HOOK(int, 0, inode_listsecurity, struct inode *inode, char *buffer, size_t buffer_size) LSM_HOOK(void, LSM_RET_VOID, inode_getsecid, struct inode *inode, u32 *secid) LSM_HOOK(int, 0, inode_copy_up, struct dentry *src, struct cred **new) -LSM_HOOK(int, 0, inode_copy_up_xattr, const char *name) +LSM_HOOK(int, -EOPNOTSUPP, inode_copy_up_xattr, const char *name) LSM_HOOK(int, 0, kernfs_init_security, struct kernfs_node *kn_dir, struct kernfs_node *kn) LSM_HOOK(int, 0, file_permission, struct file *file, int mask) @@ -360,7 +360,7 @@ LSM_HOOK(int, 0, key_alloc, struct key *key, const struct cred *cred, unsigned long flags) LSM_HOOK(void, LSM_RET_VOID, key_free, struct key *key) LSM_HOOK(int, 0, key_permission, key_ref_t key_ref, const struct cred *cred, - unsigned perm) + enum key_need_perm need_perm) LSM_HOOK(int, 0, key_getsecurity, struct key *key, char **_buffer) #endif /* CONFIG_KEYS */ diff --git a/include/linux/math64.h b/include/linux/math64.h index 11a267413e8e..d097119419e6 100644 --- a/include/linux/math64.h +++ b/include/linux/math64.h @@ -263,6 +263,8 @@ static inline u64 mul_u64_u32_div(u64 a, u32 mul, u32 divisor) } #endif /* mul_u64_u32_div */ +u64 mul_u64_u64_div_u64(u64 a, u64 mul, u64 div); + #define DIV64_U64_ROUND_UP(ll, d) \ ({ u64 _tmp = (d); div64_u64((ll) + _tmp - 1, _tmp); }) diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 017fae833d4a..9d925db0d355 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -77,16 +77,12 @@ struct memblock_type { * @current_limit: physical address of the current allocation limit * @memory: usable memory regions * @reserved: reserved memory regions - * @physmem: all physical memory */ struct memblock { bool bottom_up; /* is bottom up direction? */ phys_addr_t current_limit; struct memblock_type memory; struct memblock_type reserved; -#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP - struct memblock_type physmem; -#endif }; extern struct memblock memblock; @@ -145,6 +141,30 @@ void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start, void __memblock_free_late(phys_addr_t base, phys_addr_t size); +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP +static inline void __next_physmem_range(u64 *idx, struct memblock_type *type, + phys_addr_t *out_start, + phys_addr_t *out_end) +{ + extern struct memblock_type physmem; + + __next_mem_range(idx, NUMA_NO_NODE, MEMBLOCK_NONE, &physmem, type, + out_start, out_end, NULL); +} + +/** + * for_each_physmem_range - iterate through physmem areas not included in type. + * @i: u64 used as loop variable + * @type: ptr to memblock_type which excludes from the iteration, can be %NULL + * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL + * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL + */ +#define for_each_physmem_range(i, type, p_start, p_end) \ + for (i = 0, __next_physmem_range(&i, type, p_start, p_end); \ + i != (u64)ULLONG_MAX; \ + __next_physmem_range(&i, type, p_start, p_end)) +#endif /* CONFIG_HAVE_MEMBLOCK_PHYS_MAP */ + /** * for_each_mem_range - iterate through memblock areas from type_a and not * included in type_b. Or just type_a if type_b is NULL. diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 13c0e4556eda..1e6ca716635a 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -147,6 +147,7 @@ enum { MLX5_REG_MCDA = 0x9063, MLX5_REG_MCAM = 0x907f, MLX5_REG_MIRC = 0x9162, + MLX5_REG_SBCAM = 0xB01F, MLX5_REG_RESOURCE_DUMP = 0xC000, }; diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index 116bd9bb347f..1340e02b14ef 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -4283,7 +4283,8 @@ struct mlx5_ifc_rst2init_qp_out_bits { u8 syndrome[0x20]; - u8 reserved_at_40[0x40]; + u8 reserved_at_40[0x20]; + u8 ece[0x20]; }; struct mlx5_ifc_rst2init_qp_in_bits { @@ -4300,7 +4301,7 @@ struct mlx5_ifc_rst2init_qp_in_bits { u8 opt_param_mask[0x20]; - u8 reserved_at_a0[0x20]; + u8 ece[0x20]; struct mlx5_ifc_qpc_bits qpc; @@ -4380,6 +4381,7 @@ struct mlx5_ifc_query_vport_state_out_bits { enum { MLX5_VPORT_STATE_OP_MOD_VNIC_VPORT = 0x0, MLX5_VPORT_STATE_OP_MOD_ESW_VPORT = 0x1, + MLX5_VPORT_STATE_OP_MOD_UPLINK = 0x2, }; struct mlx5_ifc_arm_monitor_counter_in_bits { @@ -6619,7 +6621,8 @@ struct mlx5_ifc_init2init_qp_out_bits { u8 syndrome[0x20]; - u8 reserved_at_40[0x40]; + u8 reserved_at_40[0x20]; + u8 ece[0x20]; }; struct mlx5_ifc_init2init_qp_in_bits { @@ -6636,7 +6639,7 @@ struct mlx5_ifc_init2init_qp_in_bits { u8 opt_param_mask[0x20]; - u8 reserved_at_a0[0x20]; + u8 ece[0x20]; struct mlx5_ifc_qpc_bits qpc; @@ -9958,6 +9961,34 @@ struct mlx5_ifc_pptb_reg_bits { u8 untagged_buff[0x4]; }; +struct mlx5_ifc_sbcam_reg_bits { + u8 reserved_at_0[0x8]; + u8 feature_group[0x8]; + u8 reserved_at_10[0x8]; + u8 access_reg_group[0x8]; + + u8 reserved_at_20[0x20]; + + u8 sb_access_reg_cap_mask[4][0x20]; + + u8 reserved_at_c0[0x80]; + + u8 sb_feature_cap_mask[4][0x20]; + + u8 reserved_at_1c0[0x40]; + + u8 cap_total_buffer_size[0x20]; + + u8 cap_cell_size[0x10]; + u8 cap_max_pg_buffers[0x8]; + u8 cap_num_pool_supported[0x8]; + + u8 reserved_at_240[0x8]; + u8 cap_sbsr_stat_size[0x8]; + u8 cap_max_tclass_data[0x8]; + u8 cap_max_cpu_ingress_tclass_sb[0x8]; +}; + struct mlx5_ifc_pbmc_reg_bits { u8 reserved_at_0[0x8]; u8 local_port[0x8]; diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index c4c37fd12104..f6f884970511 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -257,8 +257,8 @@ struct lruvec { */ unsigned long anon_cost; unsigned long file_cost; - /* Evictions & activations on the inactive file list */ - atomic_long_t inactive_age; + /* Non-resident age, driven by LRU movement */ + atomic_long_t nonresident_age; /* Refaults at the time of last reclaim cycle */ unsigned long refaults; /* Various lruvec state flags (enum lruvec_flags) */ diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index 8d764aab29de..e14cbe444afc 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -318,7 +318,7 @@ struct pcmcia_device_id { #define INPUT_DEVICE_ID_LED_MAX 0x0f #define INPUT_DEVICE_ID_SND_MAX 0x07 #define INPUT_DEVICE_ID_FF_MAX 0x7f -#define INPUT_DEVICE_ID_SW_MAX 0x0f +#define INPUT_DEVICE_ID_SW_MAX 0x10 #define INPUT_DEVICE_ID_PROP_MAX 0x1f #define INPUT_DEVICE_ID_MATCH_BUS 1 diff --git a/include/linux/mpi.h b/include/linux/mpi.h index 7bd6d8af0004..5d906dfbf3ed 100644 --- a/include/linux/mpi.h +++ b/include/linux/mpi.h @@ -63,6 +63,9 @@ int mpi_powm(MPI res, MPI base, MPI exp, MPI mod); int mpi_cmp_ui(MPI u, ulong v); int mpi_cmp(MPI u, MPI v); +/*-- mpi-sub-ui.c --*/ +int mpi_sub_ui(MPI w, MPI u, unsigned long vval); + /*-- mpi-bit.c --*/ void mpi_normalize(MPI a); unsigned mpi_get_nbits(MPI a); diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 6fc613ed8eae..39e28e11863c 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3157,7 +3157,7 @@ static inline int dev_recursion_level(void) return this_cpu_read(softnet_data.xmit.recursion); } -#define XMIT_RECURSION_LIMIT 10 +#define XMIT_RECURSION_LIMIT 8 static inline bool dev_xmit_recursion(void) { return unlikely(__this_cpu_read(softnet_data.xmit.recursion) > diff --git a/include/linux/netfilter_ipv4/ip_tables.h b/include/linux/netfilter_ipv4/ip_tables.h index b394bd4f68a3..c4676d6feeff 100644 --- a/include/linux/netfilter_ipv4/ip_tables.h +++ b/include/linux/netfilter_ipv4/ip_tables.h @@ -25,6 +25,12 @@ int ipt_register_table(struct net *net, const struct xt_table *table, const struct ipt_replace *repl, const struct nf_hook_ops *ops, struct xt_table **res); + +void ipt_unregister_table_pre_exit(struct net *net, struct xt_table *table, + const struct nf_hook_ops *ops); + +void ipt_unregister_table_exit(struct net *net, struct xt_table *table); + void ipt_unregister_table(struct net *net, struct xt_table *table, const struct nf_hook_ops *ops); diff --git a/include/linux/netfilter_ipv6/ip6_tables.h b/include/linux/netfilter_ipv6/ip6_tables.h index 8225f7821a29..1547d5f9ae06 100644 --- a/include/linux/netfilter_ipv6/ip6_tables.h +++ b/include/linux/netfilter_ipv6/ip6_tables.h @@ -29,6 +29,9 @@ int ip6t_register_table(struct net *net, const struct xt_table *table, const struct nf_hook_ops *ops, struct xt_table **res); void ip6t_unregister_table(struct net *net, struct xt_table *table, const struct nf_hook_ops *ops); +void ip6t_unregister_table_pre_exit(struct net *net, struct xt_table *table, + const struct nf_hook_ops *ops); +void ip6t_unregister_table_exit(struct net *net, struct xt_table *table); extern unsigned int ip6t_do_table(struct sk_buff *skb, const struct nf_hook_state *state, struct xt_table *table); diff --git a/include/linux/nospec.h b/include/linux/nospec.h index 0c5ef54fd416..c1e79f72cd89 100644 --- a/include/linux/nospec.h +++ b/include/linux/nospec.h @@ -5,6 +5,8 @@ #ifndef _LINUX_NOSPEC_H #define _LINUX_NOSPEC_H + +#include <linux/compiler.h> #include <asm/barrier.h> struct task_struct; diff --git a/include/linux/of.h b/include/linux/of.h index c98ed245b815..5cf7ae0465d1 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -554,7 +554,7 @@ bool of_console_check(struct device_node *dn, char *name, int index); extern int of_cpu_node_to_id(struct device_node *np); -int of_map_rid(struct device_node *np, u32 rid, +int of_map_id(struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out); @@ -983,7 +983,7 @@ static inline int of_cpu_node_to_id(struct device_node *np) return -ENODEV; } -static inline int of_map_rid(struct device_node *np, u32 rid, +static inline int of_map_id(struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out) { diff --git a/include/linux/of_device.h b/include/linux/of_device.h index 8d31e39dd564..07ca187fc5e4 100644 --- a/include/linux/of_device.h +++ b/include/linux/of_device.h @@ -55,9 +55,15 @@ static inline struct device_node *of_cpu_device_node_get(int cpu) return of_node_get(cpu_dev->of_node); } -int of_dma_configure(struct device *dev, +int of_dma_configure_id(struct device *dev, struct device_node *np, - bool force_dma); + bool force_dma, const u32 *id); +static inline int of_dma_configure(struct device *dev, + struct device_node *np, + bool force_dma) +{ + return of_dma_configure_id(dev, np, force_dma, NULL); +} #else /* CONFIG_OF */ static inline int of_driver_match_device(struct device *dev, @@ -106,6 +112,12 @@ static inline struct device_node *of_cpu_device_node_get(int cpu) return NULL; } +static inline int of_dma_configure_id(struct device *dev, + struct device_node *np, + bool force_dma) +{ + return 0; +} static inline int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma) diff --git a/include/linux/of_iommu.h b/include/linux/of_iommu.h index f3d40dd7bb66..16f4b3e87f20 100644 --- a/include/linux/of_iommu.h +++ b/include/linux/of_iommu.h @@ -13,7 +13,8 @@ extern int of_get_dma_window(struct device_node *dn, const char *prefix, size_t *size); extern const struct iommu_ops *of_iommu_configure(struct device *dev, - struct device_node *master_np); + struct device_node *master_np, + const u32 *id); #else @@ -25,7 +26,8 @@ static inline int of_get_dma_window(struct device_node *dn, const char *prefix, } static inline const struct iommu_ops *of_iommu_configure(struct device *dev, - struct device_node *master_np) + struct device_node *master_np, + const u32 *id) { return NULL; } diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index 1214cabb2247..e8b78139f78c 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -52,9 +52,10 @@ extern struct irq_domain *of_msi_get_domain(struct device *dev, struct device_node *np, enum irq_domain_bus_token token); extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, - u32 rid); + u32 id, + u32 bus_token); extern void of_msi_configure(struct device *dev, struct device_node *np); -u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in); +u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in); #else static inline int of_irq_count(struct device_node *dev) { @@ -85,17 +86,17 @@ static inline struct irq_domain *of_msi_get_domain(struct device *dev, return NULL; } static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev, - u32 rid) + u32 id, u32 bus_token) { return NULL; } static inline void of_msi_configure(struct device *dev, struct device_node *np) { } -static inline u32 of_msi_map_rid(struct device *dev, - struct device_node *msi_np, u32 rid_in) +static inline u32 of_msi_map_id(struct device *dev, + struct device_node *msi_np, u32 id_in) { - return rid_in; + return id_in; } #endif diff --git a/include/linux/padata.h b/include/linux/padata.h index 7302efff5e65..a433f13fc4bf 100644 --- a/include/linux/padata.h +++ b/include/linux/padata.h @@ -67,17 +67,6 @@ struct padata_serial_queue { }; /** - * struct padata_parallel_queue - The percpu padata parallel queue - * - * @reorder: List to wait for reordering after parallel processing. - * @num_obj: Number of objects that are processed by this cpu. - */ -struct padata_parallel_queue { - struct padata_list reorder; - atomic_t num_obj; -}; - -/** * struct padata_cpumask - The cpumasks for the parallel/serial workers * * @pcpu: cpumask for the parallel workers. @@ -93,7 +82,7 @@ struct padata_cpumask { * that depends on the cpumask in use. * * @ps: padata_shell object. - * @pqueue: percpu padata queues used for parallelization. + * @reorder_list: percpu reorder lists * @squeue: percpu padata queues used for serialuzation. * @refcnt: Number of objects holding a reference on this parallel_data. * @seq_nr: Sequence number of the parallelized data object. @@ -105,7 +94,7 @@ struct padata_cpumask { */ struct parallel_data { struct padata_shell *ps; - struct padata_parallel_queue __percpu *pqueue; + struct padata_list __percpu *reorder_list; struct padata_serial_queue __percpu *squeue; atomic_t refcnt; unsigned int seq_nr; @@ -167,7 +156,6 @@ struct padata_mt_job { * @serial_wq: The workqueue used for serial work. * @pslist: List of padata_shell objects attached to this instance. * @cpumask: User supplied cpumasks for parallel and serial works. - * @rcpumask: Actual cpumasks based on user cpumask and cpu_online_mask. * @kobj: padata instance kernel object. * @lock: padata instance lock. * @flags: padata flags. @@ -179,7 +167,6 @@ struct padata_instance { struct workqueue_struct *serial_wq; struct list_head pslist; struct padata_cpumask cpumask; - struct padata_cpumask rcpumask; struct kobject kobj; struct mutex lock; u8 flags; @@ -194,7 +181,7 @@ extern void __init padata_init(void); static inline void __init padata_init(void) {} #endif -extern struct padata_instance *padata_alloc_possible(const char *name); +extern struct padata_instance *padata_alloc(const char *name); extern void padata_free(struct padata_instance *pinst); extern struct padata_shell *padata_alloc_shell(struct padata_instance *pinst); extern void padata_free_shell(struct padata_shell *ps); @@ -204,6 +191,4 @@ extern void padata_do_serial(struct padata_priv *padata); extern void __init padata_do_multithreaded(struct padata_mt_job *job); extern int padata_set_cpumask(struct padata_instance *pinst, int cpumask_type, cpumask_var_t cpumask); -extern int padata_start(struct padata_instance *pinst); -extern void padata_stop(struct padata_instance *pinst); #endif diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index cf2468da68e9..d1f4eff605ad 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -496,8 +496,35 @@ static inline pgoff_t linear_page_index(struct vm_area_struct *vma, return pgoff; } +/* This has the same layout as wait_bit_key - see fs/cachefiles/rdwr.c */ +struct wait_page_key { + struct page *page; + int bit_nr; + int page_match; +}; + +struct wait_page_queue { + struct page *page; + int bit_nr; + wait_queue_entry_t wait; +}; + +static inline bool wake_page_match(struct wait_page_queue *wait_page, + struct wait_page_key *key) +{ + if (wait_page->page != key->page) + return false; + key->page_match = 1; + + if (wait_page->bit_nr != key->bit_nr) + return false; + + return true; +} + extern void __lock_page(struct page *page); extern int __lock_page_killable(struct page *page); +extern int __lock_page_async(struct page *page, struct wait_page_queue *wait); extern int __lock_page_or_retry(struct page *page, struct mm_struct *mm, unsigned int flags); extern void unlock_page(struct page *page); @@ -535,6 +562,22 @@ static inline int lock_page_killable(struct page *page) } /* + * lock_page_async - Lock the page, unless this would block. If the page + * is already locked, then queue a callback when the page becomes unlocked. + * This callback can then retry the operation. + * + * Returns 0 if the page is locked successfully, or -EIOCBQUEUED if the page + * was already locked and the callback defined in 'wait' was queued. + */ +static inline int lock_page_async(struct page *page, + struct wait_page_queue *wait) +{ + if (!trylock_page(page)) + return __lock_page_async(page, wait); + return 0; +} + +/* * lock_page_or_retry - Lock the page, unless this would block and the * caller indicated that it can handle a retry. * diff --git a/include/linux/pci.h b/include/linux/pci.h index c79d83304e52..34c1c4f45288 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2169,12 +2169,11 @@ static inline int pci_pcie_type(const struct pci_dev *dev) */ static inline struct pci_dev *pcie_find_root_port(struct pci_dev *dev) { - struct pci_dev *bridge = pci_upstream_bridge(dev); - - while (bridge) { - if (pci_pcie_type(bridge) == PCI_EXP_TYPE_ROOT_PORT) - return bridge; - bridge = pci_upstream_bridge(bridge); + while (dev) { + if (pci_is_pcie(dev) && + pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) + return dev; + dev = pci_upstream_bridge(dev); } return NULL; diff --git a/include/linux/percpu-refcount.h b/include/linux/percpu-refcount.h index 22d9d183950d..87d8a38bdea1 100644 --- a/include/linux/percpu-refcount.h +++ b/include/linux/percpu-refcount.h @@ -155,7 +155,7 @@ static inline bool __ref_is_percpu(struct percpu_ref *ref, * between contaminating the pointer value, meaning that * READ_ONCE() is required when fetching it. * - * The smp_read_barrier_depends() implied by READ_ONCE() pairs + * The dependency ordering from the READ_ONCE() pairs * with smp_store_release() in __percpu_ref_switch_to_percpu(). */ percpu_ptr = READ_ONCE(ref->percpu_count_ptr); diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index b4bb32082342..0edd257a5916 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -366,7 +366,7 @@ struct pmu { * ->stop() with PERF_EF_UPDATE will read the counter and update * period/count values like ->read() would. * - * ->start() with PERF_EF_RELOAD will reprogram the the counter + * ->start() with PERF_EF_RELOAD will reprogram the counter * value, must be preceded by a ->stop() with PERF_EF_UPDATE. */ void (*start) (struct perf_event *event, int flags); @@ -419,10 +419,11 @@ struct pmu { */ void (*sched_task) (struct perf_event_context *ctx, bool sched_in); + /* - * PMU specific data size + * Kmem cache of PMU specific data */ - size_t task_ctx_size; + struct kmem_cache *task_ctx_cache; /* * PMU specific parts of task perf event context (i.e. ctx->task_ctx_data) @@ -1232,6 +1233,9 @@ extern void perf_event_exec(void); extern void perf_event_comm(struct task_struct *tsk, bool exec); extern void perf_event_namespaces(struct task_struct *tsk); extern void perf_event_fork(struct task_struct *tsk); +extern void perf_event_text_poke(const void *addr, + const void *old_bytes, size_t old_len, + const void *new_bytes, size_t new_len); /* Callchains */ DECLARE_PER_CPU(struct perf_callchain_entry, perf_callchain_entry); @@ -1479,6 +1483,11 @@ static inline void perf_event_exec(void) { } static inline void perf_event_comm(struct task_struct *tsk, bool exec) { } static inline void perf_event_namespaces(struct task_struct *tsk) { } static inline void perf_event_fork(struct task_struct *tsk) { } +static inline void perf_event_text_poke(const void *addr, + const void *old_bytes, + size_t old_len, + const void *new_bytes, + size_t new_len) { } static inline void perf_event_init(void) { } static inline int perf_swevent_get_recursion_context(void) { return -1; } static inline void perf_swevent_put_recursion_context(int rctx) { } diff --git a/include/linux/phy.h b/include/linux/phy.h index 8c05d0fb5c00..b693b609b2f5 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -1416,6 +1416,7 @@ int phy_ethtool_ksettings_set(struct phy_device *phydev, int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd); int phy_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); int phy_do_ioctl_running(struct net_device *dev, struct ifreq *ifr, int cmd); +int phy_disable_interrupts(struct phy_device *phydev); void phy_request_interrupt(struct phy_device *phydev); void phy_free_interrupt(struct phy_device *phydev); void phy_print_status(struct phy_device *phydev); diff --git a/include/linux/platform_data/leds-s3c24xx.h b/include/linux/platform_data/leds-s3c24xx.h index 5bbae85811e2..64f8d14876e0 100644 --- a/include/linux/platform_data/leds-s3c24xx.h +++ b/include/linux/platform_data/leds-s3c24xx.h @@ -10,13 +10,7 @@ #ifndef __LEDS_S3C24XX_H #define __LEDS_S3C24XX_H -#define S3C24XX_LEDF_ACTLOW (1<<0) /* LED is on when GPIO low */ -#define S3C24XX_LEDF_TRISTATE (1<<1) /* tristate to turn off */ - struct s3c24xx_led_platdata { - unsigned int gpio; - unsigned int flags; - char *name; char *def_trigger; }; diff --git a/include/linux/platform_data/mlxreg.h b/include/linux/platform_data/mlxreg.h index b8da8aef2446..9cffa9a64ab3 100644 --- a/include/linux/platform_data/mlxreg.h +++ b/include/linux/platform_data/mlxreg.h @@ -75,11 +75,13 @@ struct mlxreg_hotplug_device { * @mask: attribute access mask; * @bit: attribute effective bit; * @capability: attribute capability register; + * @reg_prsnt: attribute presence register; * @mode: access mode; * @np - pointer to node platform associated with attribute; * @hpdev - hotplug device data; * @health_cntr: dynamic device health indication counter; * @attached: true if device has been attached after good health indication; + * @regnum: number of registers occupied by multi-register attribute; */ struct mlxreg_core_data { char label[MLXREG_CORE_LABEL_MAX_SIZE]; @@ -87,11 +89,13 @@ struct mlxreg_core_data { u32 mask; u32 bit; u32 capability; + u32 reg_prsnt; umode_t mode; struct device_node *np; struct mlxreg_hotplug_device hpdev; u8 health_cntr; bool attached; + u8 regnum; }; /** diff --git a/include/linux/psi_types.h b/include/linux/psi_types.h index 4b7258495a04..b95f3211566a 100644 --- a/include/linux/psi_types.h +++ b/include/linux/psi_types.h @@ -153,9 +153,10 @@ struct psi_group { unsigned long avg[NR_PSI_STATES - 1][3]; /* Monitor work control */ - atomic_t poll_scheduled; - struct kthread_worker __rcu *poll_kworker; - struct kthread_delayed_work poll_work; + struct task_struct __rcu *poll_task; + struct timer_list poll_timer; + wait_queue_head_t poll_wait; + atomic_t poll_wakeup; /* Protects data used by the monitor */ struct mutex trigger_lock; diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h index 417db0a79a62..808f9d3ee546 100644 --- a/include/linux/ptr_ring.h +++ b/include/linux/ptr_ring.h @@ -107,7 +107,7 @@ static inline int __ptr_ring_produce(struct ptr_ring *r, void *ptr) return -ENOSPC; /* Make sure the pointer we are storing points to a valid data. */ - /* Pairs with smp_read_barrier_depends in __ptr_ring_consume. */ + /* Pairs with the dependency ordering in __ptr_ring_consume. */ smp_wmb(); WRITE_ONCE(r->queue[r->producer++], ptr); diff --git a/include/linux/qed/qed_chain.h b/include/linux/qed/qed_chain.h index 733fad7dfbed..6d15040c642c 100644 --- a/include/linux/qed/qed_chain.h +++ b/include/linux/qed/qed_chain.h @@ -207,28 +207,34 @@ static inline u32 qed_chain_get_cons_idx_u32(struct qed_chain *p_chain) static inline u16 qed_chain_get_elem_left(struct qed_chain *p_chain) { + u16 elem_per_page = p_chain->elem_per_page; + u32 prod = p_chain->u.chain16.prod_idx; + u32 cons = p_chain->u.chain16.cons_idx; u16 used; - used = (u16) (((u32)0x10000 + - (u32)p_chain->u.chain16.prod_idx) - - (u32)p_chain->u.chain16.cons_idx); + if (prod < cons) + prod += (u32)U16_MAX + 1; + + used = (u16)(prod - cons); if (p_chain->mode == QED_CHAIN_MODE_NEXT_PTR) - used -= p_chain->u.chain16.prod_idx / p_chain->elem_per_page - - p_chain->u.chain16.cons_idx / p_chain->elem_per_page; + used -= prod / elem_per_page - cons / elem_per_page; return (u16)(p_chain->capacity - used); } static inline u32 qed_chain_get_elem_left_u32(struct qed_chain *p_chain) { + u16 elem_per_page = p_chain->elem_per_page; + u64 prod = p_chain->u.chain32.prod_idx; + u64 cons = p_chain->u.chain32.cons_idx; u32 used; - used = (u32) (((u64)0x100000000ULL + - (u64)p_chain->u.chain32.prod_idx) - - (u64)p_chain->u.chain32.cons_idx); + if (prod < cons) + prod += (u64)U32_MAX + 1; + + used = (u32)(prod - cons); if (p_chain->mode == QED_CHAIN_MODE_NEXT_PTR) - used -= p_chain->u.chain32.prod_idx / p_chain->elem_per_page - - p_chain->u.chain32.cons_idx / p_chain->elem_per_page; + used -= (u32)(prod / elem_per_page - cons / elem_per_page); return p_chain->capacity - used; } diff --git a/include/linux/random.h b/include/linux/random.h index 45e1f8fa742b..9ab7443bd91b 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -11,6 +11,7 @@ #include <linux/kernel.h> #include <linux/list.h> #include <linux/once.h> +#include <asm/percpu.h> #include <uapi/linux/random.h> @@ -119,6 +120,8 @@ struct rnd_state { __u32 s1, s2, s3, s4; }; +DECLARE_PER_CPU(struct rnd_state, net_rand_state); + u32 prandom_u32_state(struct rnd_state *state); void prandom_bytes_state(struct rnd_state *state, void *buf, size_t nbytes); void prandom_seed_full_state(struct rnd_state __percpu *pcpu_state); diff --git a/include/linux/rculist.h b/include/linux/rculist.h index df587d181844..7a6fc9956510 100644 --- a/include/linux/rculist.h +++ b/include/linux/rculist.h @@ -248,6 +248,8 @@ static inline void __list_splice_init_rcu(struct list_head *list, */ sync(); + ASSERT_EXCLUSIVE_ACCESS(*first); + ASSERT_EXCLUSIVE_ACCESS(*last); /* * Readers are finished with the source list, so perform splice. @@ -512,7 +514,7 @@ static inline void hlist_replace_rcu(struct hlist_node *old, * @right: The hlist head on the right * * The lists start out as [@left ][node1 ... ] and - [@right ][node2 ... ] + * [@right ][node2 ... ] * The lists end up as [@left ][node2 ... ] * [@right ][node1 ... ] */ diff --git a/include/linux/rculist_nulls.h b/include/linux/rculist_nulls.h index 9670b54b484a..ff3e94779e73 100644 --- a/include/linux/rculist_nulls.h +++ b/include/linux/rculist_nulls.h @@ -162,7 +162,7 @@ static inline void hlist_nulls_add_fake(struct hlist_nulls_node *n) * The barrier() is needed to make sure compiler doesn't cache first element [1], * as this loop can be restarted [2] * [1] Documentation/core-api/atomic_ops.rst around line 114 - * [2] Documentation/RCU/rculist_nulls.txt around line 146 + * [2] Documentation/RCU/rculist_nulls.rst around line 146 */ #define hlist_nulls_for_each_entry_rcu(tpos, pos, head, member) \ for (({barrier();}), \ diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 659cbfa7581a..d15d46db61f7 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -828,17 +828,17 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) /* * Does the specified offset indicate that the corresponding rcu_head - * structure can be handled by kfree_rcu()? + * structure can be handled by kvfree_rcu()? */ -#define __is_kfree_rcu_offset(offset) ((offset) < 4096) +#define __is_kvfree_rcu_offset(offset) ((offset) < 4096) /* * Helper macro for kfree_rcu() to prevent argument-expansion eyestrain. */ -#define __kfree_rcu(head, offset) \ +#define __kvfree_rcu(head, offset) \ do { \ - BUILD_BUG_ON(!__is_kfree_rcu_offset(offset)); \ - kfree_call_rcu(head, (rcu_callback_t)(unsigned long)(offset)); \ + BUILD_BUG_ON(!__is_kvfree_rcu_offset(offset)); \ + kvfree_call_rcu(head, (rcu_callback_t)(unsigned long)(offset)); \ } while (0) /** @@ -857,7 +857,7 @@ static inline notrace void rcu_read_unlock_sched_notrace(void) * Because the functions are not allowed in the low-order 4096 bytes of * kernel virtual memory, offsets up to 4095 bytes can be accommodated. * If the offset is larger than 4095 bytes, a compile-time error will - * be generated in __kfree_rcu(). If this error is triggered, you can + * be generated in __kvfree_rcu(). If this error is triggered, you can * either fall back to use of call_rcu() or rearrange the structure to * position the rcu_head structure into the first 4096 bytes. * @@ -872,7 +872,46 @@ do { \ typeof (ptr) ___p = (ptr); \ \ if (___p) \ - __kfree_rcu(&((___p)->rhf), offsetof(typeof(*(ptr)), rhf)); \ + __kvfree_rcu(&((___p)->rhf), offsetof(typeof(*(ptr)), rhf)); \ +} while (0) + +/** + * kvfree_rcu() - kvfree an object after a grace period. + * + * This macro consists of one or two arguments and it is + * based on whether an object is head-less or not. If it + * has a head then a semantic stays the same as it used + * to be before: + * + * kvfree_rcu(ptr, rhf); + * + * where @ptr is a pointer to kvfree(), @rhf is the name + * of the rcu_head structure within the type of @ptr. + * + * When it comes to head-less variant, only one argument + * is passed and that is just a pointer which has to be + * freed after a grace period. Therefore the semantic is + * + * kvfree_rcu(ptr); + * + * where @ptr is a pointer to kvfree(). + * + * Please note, head-less way of freeing is permitted to + * use from a context that has to follow might_sleep() + * annotation. Otherwise, please switch and embed the + * rcu_head structure within the type of @ptr. + */ +#define kvfree_rcu(...) KVFREE_GET_MACRO(__VA_ARGS__, \ + kvfree_rcu_arg_2, kvfree_rcu_arg_1)(__VA_ARGS__) + +#define KVFREE_GET_MACRO(_1, _2, NAME, ...) NAME +#define kvfree_rcu_arg_2(ptr, rhf) kfree_rcu(ptr, rhf) +#define kvfree_rcu_arg_1(ptr) \ +do { \ + typeof(ptr) ___p = (ptr); \ + \ + if (___p) \ + kvfree_call_rcu(NULL, (rcu_callback_t) (___p)); \ } while (0) /* diff --git a/include/linux/rcupdate_trace.h b/include/linux/rcupdate_trace.h index 4c25a41f8b27..d9015aac78c6 100644 --- a/include/linux/rcupdate_trace.h +++ b/include/linux/rcupdate_trace.h @@ -36,8 +36,8 @@ void rcu_read_unlock_trace_special(struct task_struct *t, int nesting); /** * rcu_read_lock_trace - mark beginning of RCU-trace read-side critical section * - * When synchronize_rcu_trace() is invoked by one task, then that task - * is guaranteed to block until all other tasks exit their read-side + * When synchronize_rcu_tasks_trace() is invoked by one task, then that + * task is guaranteed to block until all other tasks exit their read-side * critical sections. Similarly, if call_rcu_trace() is invoked on one * task while other tasks are within RCU read-side critical sections, * invocation of the corresponding RCU callback is deferred until after diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index 8512caeb7682..5cc9637cac16 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -34,9 +34,25 @@ static inline void synchronize_rcu_expedited(void) synchronize_rcu(); } -static inline void kfree_call_rcu(struct rcu_head *head, rcu_callback_t func) +/* + * Add one more declaration of kvfree() here. It is + * not so straight forward to just include <linux/mm.h> + * where it is defined due to getting many compile + * errors caused by that include. + */ +extern void kvfree(const void *addr); + +static inline void kvfree_call_rcu(struct rcu_head *head, rcu_callback_t func) { - call_rcu(head, func); + if (head) { + call_rcu(head, func); + return; + } + + // kvfree_rcu(one_arg) call. + might_sleep(); + synchronize_rcu(); + kvfree((void *) func); } void rcu_qs(void); diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index d5cc9d675987..d2f4064ebd1d 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -33,7 +33,7 @@ static inline void rcu_virt_note_context_switch(int cpu) } void synchronize_rcu_expedited(void); -void kfree_call_rcu(struct rcu_head *head, rcu_callback_t func); +void kvfree_call_rcu(struct rcu_head *head, rcu_callback_t func); void rcu_barrier(void); bool rcu_eqs_special_set(int cpu); diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h index 70ebef866cc8..68dab3e08aad 100644 --- a/include/linux/rhashtable.h +++ b/include/linux/rhashtable.h @@ -33,7 +33,7 @@ * of two or more hash tables when the rhashtable is being resized. * The end of the chain is marked with a special nulls marks which has * the least significant bit set but otherwise stores the address of - * the hash bucket. This allows us to be be sure we've found the end + * the hash bucket. This allows us to be sure we've found the end * of the right list. * The value stored in the hash bucket has BIT(0) used as a lock bit. * This bit must be atomically set before any changes are made to @@ -84,7 +84,7 @@ struct bucket_table { struct lockdep_map dep_map; - struct rhash_lock_head *buckets[] ____cacheline_aligned_in_smp; + struct rhash_lock_head __rcu *buckets[] ____cacheline_aligned_in_smp; }; /* @@ -261,13 +261,12 @@ void rhashtable_free_and_destroy(struct rhashtable *ht, void *arg); void rhashtable_destroy(struct rhashtable *ht); -struct rhash_lock_head **rht_bucket_nested(const struct bucket_table *tbl, - unsigned int hash); -struct rhash_lock_head **__rht_bucket_nested(const struct bucket_table *tbl, - unsigned int hash); -struct rhash_lock_head **rht_bucket_nested_insert(struct rhashtable *ht, - struct bucket_table *tbl, - unsigned int hash); +struct rhash_lock_head __rcu **rht_bucket_nested( + const struct bucket_table *tbl, unsigned int hash); +struct rhash_lock_head __rcu **__rht_bucket_nested( + const struct bucket_table *tbl, unsigned int hash); +struct rhash_lock_head __rcu **rht_bucket_nested_insert( + struct rhashtable *ht, struct bucket_table *tbl, unsigned int hash); #define rht_dereference(p, ht) \ rcu_dereference_protected(p, lockdep_rht_mutex_is_held(ht)) @@ -284,21 +283,21 @@ struct rhash_lock_head **rht_bucket_nested_insert(struct rhashtable *ht, #define rht_entry(tpos, pos, member) \ ({ tpos = container_of(pos, typeof(*tpos), member); 1; }) -static inline struct rhash_lock_head *const *rht_bucket( +static inline struct rhash_lock_head __rcu *const *rht_bucket( const struct bucket_table *tbl, unsigned int hash) { return unlikely(tbl->nest) ? rht_bucket_nested(tbl, hash) : &tbl->buckets[hash]; } -static inline struct rhash_lock_head **rht_bucket_var( +static inline struct rhash_lock_head __rcu **rht_bucket_var( struct bucket_table *tbl, unsigned int hash) { return unlikely(tbl->nest) ? __rht_bucket_nested(tbl, hash) : &tbl->buckets[hash]; } -static inline struct rhash_lock_head **rht_bucket_insert( +static inline struct rhash_lock_head __rcu **rht_bucket_insert( struct rhashtable *ht, struct bucket_table *tbl, unsigned int hash) { return unlikely(tbl->nest) ? rht_bucket_nested_insert(ht, tbl, hash) : @@ -325,7 +324,7 @@ static inline struct rhash_lock_head **rht_bucket_insert( */ static inline void rht_lock(struct bucket_table *tbl, - struct rhash_lock_head **bkt) + struct rhash_lock_head __rcu **bkt) { local_bh_disable(); bit_spin_lock(0, (unsigned long *)bkt); @@ -333,7 +332,7 @@ static inline void rht_lock(struct bucket_table *tbl, } static inline void rht_lock_nested(struct bucket_table *tbl, - struct rhash_lock_head **bucket, + struct rhash_lock_head __rcu **bucket, unsigned int subclass) { local_bh_disable(); @@ -342,18 +341,18 @@ static inline void rht_lock_nested(struct bucket_table *tbl, } static inline void rht_unlock(struct bucket_table *tbl, - struct rhash_lock_head **bkt) + struct rhash_lock_head __rcu **bkt) { lock_map_release(&tbl->dep_map); bit_spin_unlock(0, (unsigned long *)bkt); local_bh_enable(); } -static inline struct rhash_head __rcu *__rht_ptr( - struct rhash_lock_head *const *bkt) +static inline struct rhash_head *__rht_ptr( + struct rhash_lock_head *p, struct rhash_lock_head __rcu *const *bkt) { - return (struct rhash_head __rcu *) - ((unsigned long)*bkt & ~BIT(0) ?: + return (struct rhash_head *) + ((unsigned long)p & ~BIT(0) ?: (unsigned long)RHT_NULLS_MARKER(bkt)); } @@ -365,47 +364,41 @@ static inline struct rhash_head __rcu *__rht_ptr( * access is guaranteed, such as when destroying the table. */ static inline struct rhash_head *rht_ptr_rcu( - struct rhash_lock_head *const *bkt) + struct rhash_lock_head __rcu *const *bkt) { - struct rhash_head __rcu *p = __rht_ptr(bkt); - - return rcu_dereference(p); + return __rht_ptr(rcu_dereference(*bkt), bkt); } static inline struct rhash_head *rht_ptr( - struct rhash_lock_head *const *bkt, + struct rhash_lock_head __rcu *const *bkt, struct bucket_table *tbl, unsigned int hash) { - return rht_dereference_bucket(__rht_ptr(bkt), tbl, hash); + return __rht_ptr(rht_dereference_bucket(*bkt, tbl, hash), bkt); } static inline struct rhash_head *rht_ptr_exclusive( - struct rhash_lock_head *const *bkt) + struct rhash_lock_head __rcu *const *bkt) { - return rcu_dereference_protected(__rht_ptr(bkt), 1); + return __rht_ptr(rcu_dereference_protected(*bkt, 1), bkt); } -static inline void rht_assign_locked(struct rhash_lock_head **bkt, +static inline void rht_assign_locked(struct rhash_lock_head __rcu **bkt, struct rhash_head *obj) { - struct rhash_head __rcu **p = (struct rhash_head __rcu **)bkt; - if (rht_is_a_nulls(obj)) obj = NULL; - rcu_assign_pointer(*p, (void *)((unsigned long)obj | BIT(0))); + rcu_assign_pointer(*bkt, (void *)((unsigned long)obj | BIT(0))); } static inline void rht_assign_unlock(struct bucket_table *tbl, - struct rhash_lock_head **bkt, + struct rhash_lock_head __rcu **bkt, struct rhash_head *obj) { - struct rhash_head __rcu **p = (struct rhash_head __rcu **)bkt; - if (rht_is_a_nulls(obj)) obj = NULL; lock_map_release(&tbl->dep_map); - rcu_assign_pointer(*p, obj); + rcu_assign_pointer(*bkt, (void *)obj); preempt_enable(); __release(bitlock); local_bh_enable(); @@ -593,7 +586,7 @@ static inline struct rhash_head *__rhashtable_lookup( .ht = ht, .key = key, }; - struct rhash_lock_head *const *bkt; + struct rhash_lock_head __rcu *const *bkt; struct bucket_table *tbl; struct rhash_head *he; unsigned int hash; @@ -709,7 +702,7 @@ static inline void *__rhashtable_insert_fast( .ht = ht, .key = key, }; - struct rhash_lock_head **bkt; + struct rhash_lock_head __rcu **bkt; struct rhash_head __rcu **pprev; struct bucket_table *tbl; struct rhash_head *head; @@ -995,7 +988,7 @@ static inline int __rhashtable_remove_fast_one( struct rhash_head *obj, const struct rhashtable_params params, bool rhlist) { - struct rhash_lock_head **bkt; + struct rhash_lock_head __rcu **bkt; struct rhash_head __rcu **pprev; struct rhash_head *he; unsigned int hash; @@ -1147,7 +1140,7 @@ static inline int __rhashtable_replace_fast( struct rhash_head *obj_old, struct rhash_head *obj_new, const struct rhashtable_params params) { - struct rhash_lock_head **bkt; + struct rhash_lock_head __rcu **bkt; struct rhash_head __rcu **pprev; struct rhash_head *he; unsigned int hash; diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 7e5b2a4eb560..25e3fde85617 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -60,39 +60,39 @@ static inline int rwsem_is_locked(struct rw_semaphore *sem) } #define RWSEM_UNLOCKED_VALUE 0L -#define __RWSEM_INIT_COUNT(name) .count = ATOMIC_LONG_INIT(RWSEM_UNLOCKED_VALUE) +#define __RWSEM_COUNT_INIT(name) .count = ATOMIC_LONG_INIT(RWSEM_UNLOCKED_VALUE) /* Common initializer macros and functions */ #ifdef CONFIG_DEBUG_LOCK_ALLOC # define __RWSEM_DEP_MAP_INIT(lockname) \ - , .dep_map = { \ + .dep_map = { \ .name = #lockname, \ .wait_type_inner = LD_WAIT_SLEEP, \ - } + }, #else # define __RWSEM_DEP_MAP_INIT(lockname) #endif #ifdef CONFIG_DEBUG_RWSEMS -# define __DEBUG_RWSEM_INITIALIZER(lockname) , .magic = &lockname +# define __RWSEM_DEBUG_INIT(lockname) .magic = &lockname, #else -# define __DEBUG_RWSEM_INITIALIZER(lockname) +# define __RWSEM_DEBUG_INIT(lockname) #endif #ifdef CONFIG_RWSEM_SPIN_ON_OWNER -#define __RWSEM_OPT_INIT(lockname) , .osq = OSQ_LOCK_UNLOCKED +#define __RWSEM_OPT_INIT(lockname) .osq = OSQ_LOCK_UNLOCKED, #else #define __RWSEM_OPT_INIT(lockname) #endif #define __RWSEM_INITIALIZER(name) \ - { __RWSEM_INIT_COUNT(name), \ + { __RWSEM_COUNT_INIT(name), \ .owner = ATOMIC_LONG_INIT(0), \ - .wait_list = LIST_HEAD_INIT((name).wait_list), \ - .wait_lock = __RAW_SPIN_LOCK_UNLOCKED(name.wait_lock) \ __RWSEM_OPT_INIT(name) \ - __DEBUG_RWSEM_INITIALIZER(name) \ + .wait_lock = __RAW_SPIN_LOCK_UNLOCKED(name.wait_lock),\ + .wait_list = LIST_HEAD_INIT((name).wait_list), \ + __RWSEM_DEBUG_INIT(name) \ __RWSEM_DEP_MAP_INIT(name) } #define DECLARE_RWSEM(name) \ diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 4f922afb607a..45cf7b69d852 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -155,7 +155,7 @@ static inline void sg_set_buf(struct scatterlist *sg, const void *buf, * Loop over each sg element in the given sg_table object. */ #define for_each_sgtable_sg(sgt, sg, i) \ - for_each_sg(sgt->sgl, sg, sgt->orig_nents, i) + for_each_sg((sgt)->sgl, sg, (sgt)->orig_nents, i) /* * Loop over each sg element in the given *DMA mapped* sg_table object. @@ -163,7 +163,7 @@ static inline void sg_set_buf(struct scatterlist *sg, const void *buf, * of the each element. */ #define for_each_sgtable_dma_sg(sgt, sg, i) \ - for_each_sg(sgt->sgl, sg, sgt->nents, i) + for_each_sg((sgt)->sgl, sg, (sgt)->nents, i) /** * sg_chain - Chain two sglists together @@ -451,7 +451,7 @@ sg_page_iter_dma_address(struct sg_dma_page_iter *dma_iter) * See also for_each_sg_page(). In each loop it operates on PAGE_SIZE unit. */ #define for_each_sgtable_page(sgt, piter, pgoffset) \ - for_each_sg_page(sgt->sgl, piter, sgt->orig_nents, pgoffset) + for_each_sg_page((sgt)->sgl, piter, (sgt)->orig_nents, pgoffset) /** * for_each_sgtable_dma_page - iterate over the DMA mapped sg_table object @@ -465,7 +465,7 @@ sg_page_iter_dma_address(struct sg_dma_page_iter *dma_iter) * unit. */ #define for_each_sgtable_dma_page(sgt, dma_iter, pgoffset) \ - for_each_sg_dma_page(sgt->sgl, dma_iter, sgt->nents, pgoffset) + for_each_sg_dma_page((sgt)->sgl, dma_iter, (sgt)->nents, pgoffset) /* diff --git a/include/linux/sched.h b/include/linux/sched.h index b62e6aaf28f0..6d6683b48c2a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -18,6 +18,7 @@ #include <linux/mutex.h> #include <linux/plist.h> #include <linux/hrtimer.h> +#include <linux/irqflags.h> #include <linux/seccomp.h> #include <linux/nodemask.h> #include <linux/rcupdate.h> @@ -114,10 +115,6 @@ struct task_group; #define task_is_stopped_or_traced(task) ((task->state & (__TASK_STOPPED | __TASK_TRACED)) != 0) -#define task_contributes_to_load(task) ((task->state & TASK_UNINTERRUPTIBLE) != 0 && \ - (task->flags & PF_FROZEN) == 0 && \ - (task->state & TASK_NOLOAD) == 0) - #ifdef CONFIG_DEBUG_ATOMIC_SLEEP /* @@ -158,24 +155,24 @@ struct task_group; * * for (;;) { * set_current_state(TASK_UNINTERRUPTIBLE); - * if (!need_sleep) - * break; + * if (CONDITION) + * break; * * schedule(); * } * __set_current_state(TASK_RUNNING); * * If the caller does not need such serialisation (because, for instance, the - * condition test and condition change and wakeup are under the same lock) then + * CONDITION test and condition change and wakeup are under the same lock) then * use __set_current_state(). * * The above is typically ordered against the wakeup, which does: * - * need_sleep = false; + * CONDITION = 1; * wake_up_state(p, TASK_UNINTERRUPTIBLE); * - * where wake_up_state() executes a full memory barrier before accessing the - * task state. + * where wake_up_state()/try_to_wake_up() executes a full memory barrier before + * accessing p->state. * * Wakeup will do: if (@state & p->state) p->state = TASK_RUNNING, that is, * once it observes the TASK_UNINTERRUPTIBLE store the waking CPU can issue a @@ -378,7 +375,7 @@ struct util_est { * For cfs_rq, they are the aggregated values of all runnable and blocked * sched_entities. * - * The load/runnable/util_avg doesn't direcly factor frequency scaling and CPU + * The load/runnable/util_avg doesn't directly factor frequency scaling and CPU * capacity scaling. The scaling is done through the rq_clock_pelt that is used * for computing those signals (see update_rq_clock_pelt()) * @@ -654,9 +651,8 @@ struct task_struct { unsigned int ptrace; #ifdef CONFIG_SMP - struct llist_node wake_entry; - unsigned int wake_entry_type; int on_cpu; + struct __call_single_node wake_entry; #ifdef CONFIG_THREAD_INFO_IN_TASK /* Current CPU: */ unsigned int cpu; @@ -691,9 +687,15 @@ struct task_struct { struct sched_dl_entity dl; #ifdef CONFIG_UCLAMP_TASK - /* Clamp values requested for a scheduling entity */ + /* + * Clamp values requested for a scheduling entity. + * Must be updated with task_rq_lock() held. + */ struct uclamp_se uclamp_req[UCLAMP_CNT]; - /* Effective clamp values used for a scheduling entity */ + /* + * Effective clamp values used for a scheduling entity. + * Must be updated with task_rq_lock() held. + */ struct uclamp_se uclamp[UCLAMP_CNT]; #endif @@ -985,19 +987,9 @@ struct task_struct { #endif #ifdef CONFIG_TRACE_IRQFLAGS - unsigned int irq_events; + struct irqtrace_events irqtrace; unsigned int hardirq_threaded; - unsigned long hardirq_enable_ip; - unsigned long hardirq_disable_ip; - unsigned int hardirq_enable_event; - unsigned int hardirq_disable_event; - int hardirqs_enabled; - int hardirq_context; u64 hardirq_chain_key; - unsigned long softirq_disable_ip; - unsigned long softirq_enable_ip; - unsigned int softirq_disable_event; - unsigned int softirq_enable_event; int softirqs_enabled; int softirq_context; int irq_config; @@ -1198,8 +1190,12 @@ struct task_struct { #ifdef CONFIG_KASAN unsigned int kasan_depth; #endif + #ifdef CONFIG_KCSAN struct kcsan_ctx kcsan_ctx; +#ifdef CONFIG_TRACE_IRQFLAGS + struct irqtrace_events kcsan_save_irqtrace; +#endif #endif #ifdef CONFIG_FUNCTION_GRAPH_TRACER @@ -2049,6 +2045,7 @@ const struct sched_avg *sched_trace_rq_avg_dl(struct rq *rq); const struct sched_avg *sched_trace_rq_avg_irq(struct rq *rq); int sched_trace_rq_cpu(struct rq *rq); +int sched_trace_rq_nr_running(struct rq *rq); const struct cpumask *sched_trace_rd_span(struct root_domain *rd); diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h index 0fbcbacd1b29..cc9f393e2a70 100644 --- a/include/linux/sched/isolation.h +++ b/include/linux/sched/isolation.h @@ -14,6 +14,7 @@ enum hk_flags { HK_FLAG_DOMAIN = (1 << 5), HK_FLAG_WQ = (1 << 6), HK_FLAG_MANAGED_IRQ = (1 << 7), + HK_FLAG_KTHREAD = (1 << 8), }; #ifdef CONFIG_CPU_ISOLATION diff --git a/include/linux/sched/jobctl.h b/include/linux/sched/jobctl.h index fa067de9f1a9..d2b4204ba4d3 100644 --- a/include/linux/sched/jobctl.h +++ b/include/linux/sched/jobctl.h @@ -19,6 +19,7 @@ struct task_struct; #define JOBCTL_TRAPPING_BIT 21 /* switching to TRACED */ #define JOBCTL_LISTENING_BIT 22 /* ptracer is listening for events */ #define JOBCTL_TRAP_FREEZE_BIT 23 /* trap for cgroup freezer */ +#define JOBCTL_TASK_WORK_BIT 24 /* set by TWA_SIGNAL */ #define JOBCTL_STOP_DEQUEUED (1UL << JOBCTL_STOP_DEQUEUED_BIT) #define JOBCTL_STOP_PENDING (1UL << JOBCTL_STOP_PENDING_BIT) @@ -28,9 +29,10 @@ struct task_struct; #define JOBCTL_TRAPPING (1UL << JOBCTL_TRAPPING_BIT) #define JOBCTL_LISTENING (1UL << JOBCTL_LISTENING_BIT) #define JOBCTL_TRAP_FREEZE (1UL << JOBCTL_TRAP_FREEZE_BIT) +#define JOBCTL_TASK_WORK (1UL << JOBCTL_TASK_WORK_BIT) #define JOBCTL_TRAP_MASK (JOBCTL_TRAP_STOP | JOBCTL_TRAP_NOTIFY) -#define JOBCTL_PENDING_MASK (JOBCTL_STOP_PENDING | JOBCTL_TRAP_MASK) +#define JOBCTL_PENDING_MASK (JOBCTL_STOP_PENDING | JOBCTL_TRAP_MASK | JOBCTL_TASK_WORK) extern bool task_set_jobctl_pending(struct task_struct *task, unsigned long mask); extern void task_clear_jobctl_trapping(struct task_struct *task); diff --git a/include/linux/sched/loadavg.h b/include/linux/sched/loadavg.h index 4859bea47a7b..83ec54b65e79 100644 --- a/include/linux/sched/loadavg.h +++ b/include/linux/sched/loadavg.h @@ -43,6 +43,6 @@ extern unsigned long calc_load_n(unsigned long load, unsigned long exp, #define LOAD_INT(x) ((x) >> FSHIFT) #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100) -extern void calc_global_load(unsigned long ticks); +extern void calc_global_load(void); #endif /* _LINUX_SCHED_LOADAVG_H */ diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h index 480a4d1b7dd8..6be66f52a2ad 100644 --- a/include/linux/sched/mm.h +++ b/include/linux/sched/mm.h @@ -23,7 +23,7 @@ extern struct mm_struct *mm_alloc(void); * will still exist later on and mmget_not_zero() has to be used before * accessing it. * - * This is a preferred way to to pin @mm for a longer/unbounded amount + * This is a preferred way to pin @mm for a longer/unbounded amount * of time. * * Use mmdrop() to release the reference acquired by mmgrab(). @@ -49,8 +49,6 @@ static inline void mmdrop(struct mm_struct *mm) __mmdrop(mm); } -void mmdrop(struct mm_struct *mm); - /* * This has to be called after a get_task_mm()/mmget_not_zero() * followed by taking the mmap_lock for writing before modifying the @@ -234,7 +232,7 @@ static inline unsigned int memalloc_noio_save(void) * @flags: Flags to restore. * * Ends the implicit GFP_NOIO scope started by memalloc_noio_save function. - * Always make sure that that the given flags is the return value from the + * Always make sure that the given flags is the return value from the * pairing memalloc_noio_save call. */ static inline void memalloc_noio_restore(unsigned int flags) @@ -265,7 +263,7 @@ static inline unsigned int memalloc_nofs_save(void) * @flags: Flags to restore. * * Ends the implicit GFP_NOFS scope started by memalloc_nofs_save function. - * Always make sure that that the given flags is the return value from the + * Always make sure that the given flags is the return value from the * pairing memalloc_nofs_save call. */ static inline void memalloc_nofs_restore(unsigned int flags) diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h index 660ac49f2b53..3c31ba88aca5 100644 --- a/include/linux/sched/sysctl.h +++ b/include/linux/sched/sysctl.h @@ -61,9 +61,13 @@ int sched_proc_update_handler(struct ctl_table *table, int write, extern unsigned int sysctl_sched_rt_period; extern int sysctl_sched_rt_runtime; +extern unsigned int sysctl_sched_dl_period_max; +extern unsigned int sysctl_sched_dl_period_min; + #ifdef CONFIG_UCLAMP_TASK extern unsigned int sysctl_sched_uclamp_util_min; extern unsigned int sysctl_sched_uclamp_util_max; +extern unsigned int sysctl_sched_uclamp_util_min_rt_default; #endif #ifdef CONFIG_CFS_BANDWIDTH diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index 38359071236a..27b4fa454c80 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -55,6 +55,7 @@ extern asmlinkage void schedule_tail(struct task_struct *prev); extern void init_idle(struct task_struct *idle, int cpu); extern int sched_fork(unsigned long clone_flags, struct task_struct *p); +extern void sched_post_fork(struct task_struct *p); extern void sched_dead(struct task_struct *p); void __noreturn do_task_dead(void); @@ -126,6 +127,12 @@ static inline void put_task_struct(struct task_struct *t) __put_task_struct(t); } +static inline void put_task_struct_many(struct task_struct *t, int nr) +{ + if (refcount_sub_and_test(nr, &t->usage)) + __put_task_struct(t); +} + void put_task_struct_rcu_user(struct task_struct *task); #ifdef CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h index fb11091129b3..820511289857 100644 --- a/include/linux/sched/topology.h +++ b/include/linux/sched/topology.h @@ -217,6 +217,16 @@ static inline bool cpus_share_cache(int this_cpu, int that_cpu) #endif /* !CONFIG_SMP */ #ifndef arch_scale_cpu_capacity +/** + * arch_scale_cpu_capacity - get the capacity scale factor of a given CPU. + * @cpu: the CPU in question. + * + * Return: the CPU scale factor normalized against SCHED_CAPACITY_SCALE, i.e. + * + * max_perf(cpu) + * ----------------------------- * SCHED_CAPACITY_SCALE + * max(max_perf(c) : c \in CPUs) + */ static __always_inline unsigned long arch_scale_cpu_capacity(int cpu) { @@ -232,6 +242,13 @@ unsigned long arch_scale_thermal_pressure(int cpu) } #endif +#ifndef arch_set_thermal_pressure +static __always_inline +void arch_set_thermal_pressure(const struct cpumask *cpus, + unsigned long th_pressure) +{ } +#endif + static inline int task_node(const struct task_struct *p) { return cpu_to_node(task_cpu(p)); diff --git a/include/linux/sched_clock.h b/include/linux/sched_clock.h index 0bb04a96a6d4..528718e4ed52 100644 --- a/include/linux/sched_clock.h +++ b/include/linux/sched_clock.h @@ -6,6 +6,34 @@ #define LINUX_SCHED_CLOCK #ifdef CONFIG_GENERIC_SCHED_CLOCK +/** + * struct clock_read_data - data required to read from sched_clock() + * + * @epoch_ns: sched_clock() value at last update + * @epoch_cyc: Clock cycle value at last update. + * @sched_clock_mask: Bitmask for two's complement subtraction of non 64bit + * clocks. + * @read_sched_clock: Current clock source (or dummy source when suspended). + * @mult: Multipler for scaled math conversion. + * @shift: Shift value for scaled math conversion. + * + * Care must be taken when updating this structure; it is read by + * some very hot code paths. It occupies <=40 bytes and, when combined + * with the seqcount used to synchronize access, comfortably fits into + * a 64 byte cache line. + */ +struct clock_read_data { + u64 epoch_ns; + u64 epoch_cyc; + u64 sched_clock_mask; + u64 (*read_sched_clock)(void); + u32 mult; + u32 shift; +}; + +extern struct clock_read_data *sched_clock_read_begin(unsigned int *seq); +extern int sched_clock_read_retry(unsigned int seq); + extern void generic_sched_clock_init(void); extern void sched_clock_register(u64 (*read)(void), int bits, diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index 8b97204f35a7..54bc20496392 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -1,36 +1,15 @@ /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __LINUX_SEQLOCK_H #define __LINUX_SEQLOCK_H + /* - * Reader/writer consistent mechanism without starving writers. This type of - * lock for data where the reader wants a consistent set of information - * and is willing to retry if the information changes. There are two types - * of readers: - * 1. Sequence readers which never block a writer but they may have to retry - * if a writer is in progress by detecting change in sequence number. - * Writers do not wait for a sequence reader. - * 2. Locking readers which will wait if a writer or another locking reader - * is in progress. A locking reader in progress will also block a writer - * from going forward. Unlike the regular rwlock, the read lock here is - * exclusive so that only one locking reader can get it. - * - * This is not as cache friendly as brlock. Also, this may not work well - * for data that contains pointers, because any writer could - * invalidate a pointer that a reader was following. - * - * Expected non-blocking reader usage: - * do { - * seq = read_seqbegin(&foo); - * ... - * } while (read_seqretry(&foo, seq)); - * + * seqcount_t / seqlock_t - a reader-writer consistency mechanism with + * lockless readers (read-only retry loops), and no writer starvation. * - * On non-SMP the spin locks disappear but the writer still needs - * to increment the sequence variables because an interrupt routine could - * change the state of the data. + * See Documentation/locking/seqlock.rst * - * Based on x86_64 vsyscall gettimeofday - * by Keith Owens and Andrea Arcangeli + * Copyrights: + * - Based on x86_64 vsyscall gettimeofday: Keith Owens, Andrea Arcangeli */ #include <linux/spinlock.h> @@ -41,8 +20,8 @@ #include <asm/processor.h> /* - * The seqlock interface does not prescribe a precise sequence of read - * begin/retry/end. For readers, typically there is a call to + * The seqlock seqcount_t interface does not prescribe a precise sequence of + * read begin/retry/end. For readers, typically there is a call to * read_seqcount_begin() and read_seqcount_retry(), however, there are more * esoteric cases which do not follow this pattern. * @@ -50,16 +29,30 @@ * via seqcount_t under KCSAN: upon beginning a seq-reader critical section, * pessimistically mark the next KCSAN_SEQLOCK_REGION_MAX memory accesses as * atomics; if there is a matching read_seqcount_retry() call, no following - * memory operations are considered atomic. Usage of seqlocks via seqlock_t - * interface is not affected. + * memory operations are considered atomic. Usage of the seqlock_t interface + * is not affected. */ #define KCSAN_SEQLOCK_REGION_MAX 1000 /* - * Version using sequence counter only. - * This can be used when code has its own mutex protecting the - * updating starting before the write_seqcountbeqin() and ending - * after the write_seqcount_end(). + * Sequence counters (seqcount_t) + * + * This is the raw counting mechanism, without any writer protection. + * + * Write side critical sections must be serialized and non-preemptible. + * + * If readers can be invoked from hardirq or softirq contexts, + * interrupts or bottom halves must also be respectively disabled before + * entering the write section. + * + * This mechanism can't be used if the protected data contains pointers, + * as the writer can invalidate a pointer that a reader is following. + * + * If it's desired to automatically handle the sequence counter writer + * serialization and non-preemptibility requirements, use a sequential + * lock (seqlock_t) instead. + * + * See Documentation/locking/seqlock.rst */ typedef struct seqcount { unsigned sequence; @@ -82,6 +75,10 @@ static inline void __seqcount_init(seqcount_t *s, const char *name, # define SEQCOUNT_DEP_MAP_INIT(lockname) \ .dep_map = { .name = #lockname } \ +/** + * seqcount_init() - runtime initializer for seqcount_t + * @s: Pointer to the seqcount_t instance + */ # define seqcount_init(s) \ do { \ static struct lock_class_key __key; \ @@ -105,13 +102,15 @@ static inline void seqcount_lockdep_reader_access(const seqcount_t *s) # define seqcount_lockdep_reader_access(x) #endif -#define SEQCNT_ZERO(lockname) { .sequence = 0, SEQCOUNT_DEP_MAP_INIT(lockname)} - +/** + * SEQCNT_ZERO() - static initializer for seqcount_t + * @name: Name of the seqcount_t instance + */ +#define SEQCNT_ZERO(name) { .sequence = 0, SEQCOUNT_DEP_MAP_INIT(name) } /** - * __read_seqcount_begin - begin a seq-read critical section (without barrier) - * @s: pointer to seqcount_t - * Returns: count to be passed to read_seqcount_retry + * __read_seqcount_begin() - begin a seqcount_t read section w/o barrier + * @s: Pointer to seqcount_t * * __read_seqcount_begin is like read_seqcount_begin, but has no smp_rmb() * barrier. Callers should ensure that smp_rmb() or equivalent ordering is @@ -120,6 +119,8 @@ static inline void seqcount_lockdep_reader_access(const seqcount_t *s) * * Use carefully, only in critical code, and comment how the barrier is * provided. + * + * Return: count to be passed to read_seqcount_retry() */ static inline unsigned __read_seqcount_begin(const seqcount_t *s) { @@ -136,30 +137,10 @@ repeat: } /** - * raw_read_seqcount - Read the raw seqcount - * @s: pointer to seqcount_t - * Returns: count to be passed to read_seqcount_retry + * raw_read_seqcount_begin() - begin a seqcount_t read section w/o lockdep + * @s: Pointer to seqcount_t * - * raw_read_seqcount opens a read critical section of the given - * seqcount without any lockdep checking and without checking or - * masking the LSB. Calling code is responsible for handling that. - */ -static inline unsigned raw_read_seqcount(const seqcount_t *s) -{ - unsigned ret = READ_ONCE(s->sequence); - smp_rmb(); - kcsan_atomic_next(KCSAN_SEQLOCK_REGION_MAX); - return ret; -} - -/** - * raw_read_seqcount_begin - start seq-read critical section w/o lockdep - * @s: pointer to seqcount_t - * Returns: count to be passed to read_seqcount_retry - * - * raw_read_seqcount_begin opens a read critical section of the given - * seqcount, but without any lockdep checking. Validity of the critical - * section is tested by checking read_seqcount_retry function. + * Return: count to be passed to read_seqcount_retry() */ static inline unsigned raw_read_seqcount_begin(const seqcount_t *s) { @@ -169,13 +150,10 @@ static inline unsigned raw_read_seqcount_begin(const seqcount_t *s) } /** - * read_seqcount_begin - begin a seq-read critical section - * @s: pointer to seqcount_t - * Returns: count to be passed to read_seqcount_retry + * read_seqcount_begin() - begin a seqcount_t read critical section + * @s: Pointer to seqcount_t * - * read_seqcount_begin opens a read critical section of the given seqcount. - * Validity of the critical section is tested by checking read_seqcount_retry - * function. + * Return: count to be passed to read_seqcount_retry() */ static inline unsigned read_seqcount_begin(const seqcount_t *s) { @@ -184,32 +162,54 @@ static inline unsigned read_seqcount_begin(const seqcount_t *s) } /** - * raw_seqcount_begin - begin a seq-read critical section - * @s: pointer to seqcount_t - * Returns: count to be passed to read_seqcount_retry + * raw_read_seqcount() - read the raw seqcount_t counter value + * @s: Pointer to seqcount_t * - * raw_seqcount_begin opens a read critical section of the given seqcount. - * Validity of the critical section is tested by checking read_seqcount_retry - * function. + * raw_read_seqcount opens a read critical section of the given + * seqcount_t, without any lockdep checking, and without checking or + * masking the sequence counter LSB. Calling code is responsible for + * handling that. * - * Unlike read_seqcount_begin(), this function will not wait for the count - * to stabilize. If a writer is active when we begin, we will fail the - * read_seqcount_retry() instead of stabilizing at the beginning of the - * critical section. + * Return: count to be passed to read_seqcount_retry() */ -static inline unsigned raw_seqcount_begin(const seqcount_t *s) +static inline unsigned raw_read_seqcount(const seqcount_t *s) { unsigned ret = READ_ONCE(s->sequence); smp_rmb(); kcsan_atomic_next(KCSAN_SEQLOCK_REGION_MAX); - return ret & ~1; + return ret; } /** - * __read_seqcount_retry - end a seq-read critical section (without barrier) - * @s: pointer to seqcount_t - * @start: count, from read_seqcount_begin - * Returns: 1 if retry is required, else 0 + * raw_seqcount_begin() - begin a seqcount_t read critical section w/o + * lockdep and w/o counter stabilization + * @s: Pointer to seqcount_t + * + * raw_seqcount_begin opens a read critical section of the given + * seqcount_t. Unlike read_seqcount_begin(), this function will not wait + * for the count to stabilize. If a writer is active when it begins, it + * will fail the read_seqcount_retry() at the end of the read critical + * section instead of stabilizing at the beginning of it. + * + * Use this only in special kernel hot paths where the read section is + * small and has a high probability of success through other external + * means. It will save a single branching instruction. + * + * Return: count to be passed to read_seqcount_retry() + */ +static inline unsigned raw_seqcount_begin(const seqcount_t *s) +{ + /* + * If the counter is odd, let read_seqcount_retry() fail + * by decrementing the counter. + */ + return raw_read_seqcount(s) & ~1; +} + +/** + * __read_seqcount_retry() - end a seqcount_t read section w/o barrier + * @s: Pointer to seqcount_t + * @start: count, from read_seqcount_begin() * * __read_seqcount_retry is like read_seqcount_retry, but has no smp_rmb() * barrier. Callers should ensure that smp_rmb() or equivalent ordering is @@ -218,6 +218,8 @@ static inline unsigned raw_seqcount_begin(const seqcount_t *s) * * Use carefully, only in critical code, and comment how the barrier is * provided. + * + * Return: true if a read section retry is required, else false */ static inline int __read_seqcount_retry(const seqcount_t *s, unsigned start) { @@ -226,14 +228,15 @@ static inline int __read_seqcount_retry(const seqcount_t *s, unsigned start) } /** - * read_seqcount_retry - end a seq-read critical section - * @s: pointer to seqcount_t - * @start: count, from read_seqcount_begin - * Returns: 1 if retry is required, else 0 + * read_seqcount_retry() - end a seqcount_t read critical section + * @s: Pointer to seqcount_t + * @start: count, from read_seqcount_begin() * - * read_seqcount_retry closes a read critical section of the given seqcount. - * If the critical section was invalid, it must be ignored (and typically - * retried). + * read_seqcount_retry closes the read critical section of given + * seqcount_t. If the critical section was invalid, it must be ignored + * (and typically retried). + * + * Return: true if a read section retry is required, else false */ static inline int read_seqcount_retry(const seqcount_t *s, unsigned start) { @@ -241,8 +244,10 @@ static inline int read_seqcount_retry(const seqcount_t *s, unsigned start) return __read_seqcount_retry(s, start); } - - +/** + * raw_write_seqcount_begin() - start a seqcount_t write section w/o lockdep + * @s: Pointer to seqcount_t + */ static inline void raw_write_seqcount_begin(seqcount_t *s) { kcsan_nestable_atomic_begin(); @@ -250,6 +255,10 @@ static inline void raw_write_seqcount_begin(seqcount_t *s) smp_wmb(); } +/** + * raw_write_seqcount_end() - end a seqcount_t write section w/o lockdep + * @s: Pointer to seqcount_t + */ static inline void raw_write_seqcount_end(seqcount_t *s) { smp_wmb(); @@ -257,45 +266,104 @@ static inline void raw_write_seqcount_end(seqcount_t *s) kcsan_nestable_atomic_end(); } +static inline void __write_seqcount_begin_nested(seqcount_t *s, int subclass) +{ + raw_write_seqcount_begin(s); + seqcount_acquire(&s->dep_map, subclass, 0, _RET_IP_); +} + /** - * raw_write_seqcount_barrier - do a seq write barrier - * @s: pointer to seqcount_t + * write_seqcount_begin_nested() - start a seqcount_t write section with + * custom lockdep nesting level + * @s: Pointer to seqcount_t + * @subclass: lockdep nesting level * - * This can be used to provide an ordering guarantee instead of the - * usual consistency guarantee. It is one wmb cheaper, because we can - * collapse the two back-to-back wmb()s. + * See Documentation/locking/lockdep-design.rst + */ +static inline void write_seqcount_begin_nested(seqcount_t *s, int subclass) +{ + lockdep_assert_preemption_disabled(); + __write_seqcount_begin_nested(s, subclass); +} + +/* + * A write_seqcount_begin() variant w/o lockdep non-preemptibility checks. + * + * Use for internal seqlock.h code where it's known that preemption is + * already disabled. For example, seqlock_t write side functions. + */ +static inline void __write_seqcount_begin(seqcount_t *s) +{ + __write_seqcount_begin_nested(s, 0); +} + +/** + * write_seqcount_begin() - start a seqcount_t write side critical section + * @s: Pointer to seqcount_t + * + * write_seqcount_begin opens a write side critical section of the given + * seqcount_t. + * + * Context: seqcount_t write side critical sections must be serialized and + * non-preemptible. If readers can be invoked from hardirq or softirq + * context, interrupts or bottom halves must be respectively disabled. + */ +static inline void write_seqcount_begin(seqcount_t *s) +{ + write_seqcount_begin_nested(s, 0); +} + +/** + * write_seqcount_end() - end a seqcount_t write side critical section + * @s: Pointer to seqcount_t + * + * The write section must've been opened with write_seqcount_begin(). + */ +static inline void write_seqcount_end(seqcount_t *s) +{ + seqcount_release(&s->dep_map, _RET_IP_); + raw_write_seqcount_end(s); +} + +/** + * raw_write_seqcount_barrier() - do a seqcount_t write barrier + * @s: Pointer to seqcount_t + * + * This can be used to provide an ordering guarantee instead of the usual + * consistency guarantee. It is one wmb cheaper, because it can collapse + * the two back-to-back wmb()s. * * Note that writes surrounding the barrier should be declared atomic (e.g. * via WRITE_ONCE): a) to ensure the writes become visible to other threads * atomically, avoiding compiler optimizations; b) to document which writes are * meant to propagate to the reader critical section. This is necessary because * neither writes before and after the barrier are enclosed in a seq-writer - * critical section that would ensure readers are aware of ongoing writes. + * critical section that would ensure readers are aware of ongoing writes:: * - * seqcount_t seq; - * bool X = true, Y = false; + * seqcount_t seq; + * bool X = true, Y = false; * - * void read(void) - * { - * bool x, y; + * void read(void) + * { + * bool x, y; * - * do { - * int s = read_seqcount_begin(&seq); + * do { + * int s = read_seqcount_begin(&seq); * - * x = X; y = Y; + * x = X; y = Y; * - * } while (read_seqcount_retry(&seq, s)); + * } while (read_seqcount_retry(&seq, s)); * - * BUG_ON(!x && !y); + * BUG_ON(!x && !y); * } * * void write(void) * { - * WRITE_ONCE(Y, true); + * WRITE_ONCE(Y, true); * - * raw_write_seqcount_barrier(seq); + * raw_write_seqcount_barrier(seq); * - * WRITE_ONCE(X, false); + * WRITE_ONCE(X, false); * } */ static inline void raw_write_seqcount_barrier(seqcount_t *s) @@ -307,6 +375,37 @@ static inline void raw_write_seqcount_barrier(seqcount_t *s) kcsan_nestable_atomic_end(); } +/** + * write_seqcount_invalidate() - invalidate in-progress seqcount_t read + * side operations + * @s: Pointer to seqcount_t + * + * After write_seqcount_invalidate, no seqcount_t read side operations + * will complete successfully and see data older than this. + */ +static inline void write_seqcount_invalidate(seqcount_t *s) +{ + smp_wmb(); + kcsan_nestable_atomic_begin(); + s->sequence+=2; + kcsan_nestable_atomic_end(); +} + +/** + * raw_read_seqcount_latch() - pick even/odd seqcount_t latch data copy + * @s: Pointer to seqcount_t + * + * Use seqcount_t latching to switch between two storage places protected + * by a sequence counter. Doing so allows having interruptible, preemptible, + * seqcount_t write side critical sections. + * + * Check raw_write_seqcount_latch() for more details and a full reader and + * writer usage example. + * + * Return: sequence counter raw value. Use the lowest bit as an index for + * picking which data copy to read. The full counter value must then be + * checked with read_seqcount_retry(). + */ static inline int raw_read_seqcount_latch(seqcount_t *s) { /* Pairs with the first smp_wmb() in raw_write_seqcount_latch() */ @@ -315,8 +414,8 @@ static inline int raw_read_seqcount_latch(seqcount_t *s) } /** - * raw_write_seqcount_latch - redirect readers to even/odd copy - * @s: pointer to seqcount_t + * raw_write_seqcount_latch() - redirect readers to even/odd copy + * @s: Pointer to seqcount_t * * The latch technique is a multiversion concurrency control method that allows * queries during non-atomic modifications. If you can guarantee queries never @@ -332,64 +431,68 @@ static inline int raw_read_seqcount_latch(seqcount_t *s) * Very simply put: we first modify one copy and then the other. This ensures * there is always one copy in a stable state, ready to give us an answer. * - * The basic form is a data structure like: + * The basic form is a data structure like:: * - * struct latch_struct { - * seqcount_t seq; - * struct data_struct data[2]; - * }; + * struct latch_struct { + * seqcount_t seq; + * struct data_struct data[2]; + * }; * * Where a modification, which is assumed to be externally serialized, does the - * following: + * following:: * - * void latch_modify(struct latch_struct *latch, ...) - * { - * smp_wmb(); <- Ensure that the last data[1] update is visible - * latch->seq++; - * smp_wmb(); <- Ensure that the seqcount update is visible + * void latch_modify(struct latch_struct *latch, ...) + * { + * smp_wmb(); // Ensure that the last data[1] update is visible + * latch->seq++; + * smp_wmb(); // Ensure that the seqcount update is visible * - * modify(latch->data[0], ...); + * modify(latch->data[0], ...); * - * smp_wmb(); <- Ensure that the data[0] update is visible - * latch->seq++; - * smp_wmb(); <- Ensure that the seqcount update is visible + * smp_wmb(); // Ensure that the data[0] update is visible + * latch->seq++; + * smp_wmb(); // Ensure that the seqcount update is visible * - * modify(latch->data[1], ...); - * } + * modify(latch->data[1], ...); + * } * - * The query will have a form like: + * The query will have a form like:: * - * struct entry *latch_query(struct latch_struct *latch, ...) - * { - * struct entry *entry; - * unsigned seq, idx; + * struct entry *latch_query(struct latch_struct *latch, ...) + * { + * struct entry *entry; + * unsigned seq, idx; * - * do { - * seq = raw_read_seqcount_latch(&latch->seq); + * do { + * seq = raw_read_seqcount_latch(&latch->seq); * - * idx = seq & 0x01; - * entry = data_query(latch->data[idx], ...); + * idx = seq & 0x01; + * entry = data_query(latch->data[idx], ...); * - * smp_rmb(); - * } while (seq != latch->seq); + * // read_seqcount_retry() includes needed smp_rmb() + * } while (read_seqcount_retry(&latch->seq, seq)); * - * return entry; - * } + * return entry; + * } * * So during the modification, queries are first redirected to data[1]. Then we * modify data[0]. When that is complete, we redirect queries back to data[0] * and we can modify data[1]. * - * NOTE: The non-requirement for atomic modifications does _NOT_ include - * the publishing of new entries in the case where data is a dynamic - * data structure. + * NOTE: * - * An iteration might start in data[0] and get suspended long enough - * to miss an entire modification sequence, once it resumes it might - * observe the new entry. + * The non-requirement for atomic modifications does _NOT_ include + * the publishing of new entries in the case where data is a dynamic + * data structure. * - * NOTE: When data is a dynamic data structure; one should use regular RCU - * patterns to manage the lifetimes of the objects within. + * An iteration might start in data[0] and get suspended long enough + * to miss an entire modification sequence, once it resumes it might + * observe the new entry. + * + * NOTE: + * + * When data is a dynamic data structure; one should use regular RCU + * patterns to manage the lifetimes of the objects within. */ static inline void raw_write_seqcount_latch(seqcount_t *s) { @@ -399,67 +502,48 @@ static inline void raw_write_seqcount_latch(seqcount_t *s) } /* - * Sequence counter only version assumes that callers are using their - * own mutexing. - */ -static inline void write_seqcount_begin_nested(seqcount_t *s, int subclass) -{ - raw_write_seqcount_begin(s); - seqcount_acquire(&s->dep_map, subclass, 0, _RET_IP_); -} - -static inline void write_seqcount_begin(seqcount_t *s) -{ - write_seqcount_begin_nested(s, 0); -} - -static inline void write_seqcount_end(seqcount_t *s) -{ - seqcount_release(&s->dep_map, _RET_IP_); - raw_write_seqcount_end(s); -} - -/** - * write_seqcount_invalidate - invalidate in-progress read-side seq operations - * @s: pointer to seqcount_t + * Sequential locks (seqlock_t) * - * After write_seqcount_invalidate, no read-side seq operations will complete - * successfully and see data older than this. + * Sequence counters with an embedded spinlock for writer serialization + * and non-preemptibility. + * + * For more info, see: + * - Comments on top of seqcount_t + * - Documentation/locking/seqlock.rst */ -static inline void write_seqcount_invalidate(seqcount_t *s) -{ - smp_wmb(); - kcsan_nestable_atomic_begin(); - s->sequence+=2; - kcsan_nestable_atomic_end(); -} - typedef struct { struct seqcount seqcount; spinlock_t lock; } seqlock_t; -/* - * These macros triggered gcc-3.x compile-time problems. We think these are - * OK now. Be cautious. - */ #define __SEQLOCK_UNLOCKED(lockname) \ { \ .seqcount = SEQCNT_ZERO(lockname), \ .lock = __SPIN_LOCK_UNLOCKED(lockname) \ } -#define seqlock_init(x) \ +/** + * seqlock_init() - dynamic initializer for seqlock_t + * @sl: Pointer to the seqlock_t instance + */ +#define seqlock_init(sl) \ do { \ - seqcount_init(&(x)->seqcount); \ - spin_lock_init(&(x)->lock); \ + seqcount_init(&(sl)->seqcount); \ + spin_lock_init(&(sl)->lock); \ } while (0) -#define DEFINE_SEQLOCK(x) \ - seqlock_t x = __SEQLOCK_UNLOCKED(x) +/** + * DEFINE_SEQLOCK() - Define a statically allocated seqlock_t + * @sl: Name of the seqlock_t instance + */ +#define DEFINE_SEQLOCK(sl) \ + seqlock_t sl = __SEQLOCK_UNLOCKED(sl) -/* - * Read side functions for starting and finalizing a read side section. +/** + * read_seqbegin() - start a seqlock_t read side critical section + * @sl: Pointer to seqlock_t + * + * Return: count, to be passed to read_seqretry() */ static inline unsigned read_seqbegin(const seqlock_t *sl) { @@ -470,6 +554,17 @@ static inline unsigned read_seqbegin(const seqlock_t *sl) return ret; } +/** + * read_seqretry() - end a seqlock_t read side section + * @sl: Pointer to seqlock_t + * @start: count, from read_seqbegin() + * + * read_seqretry closes the read side critical section of given seqlock_t. + * If the critical section was invalid, it must be ignored (and typically + * retried). + * + * Return: true if a read section retry is required, else false + */ static inline unsigned read_seqretry(const seqlock_t *sl, unsigned start) { /* @@ -481,41 +576,85 @@ static inline unsigned read_seqretry(const seqlock_t *sl, unsigned start) return read_seqcount_retry(&sl->seqcount, start); } -/* - * Lock out other writers and update the count. - * Acts like a normal spin_lock/unlock. - * Don't need preempt_disable() because that is in the spin_lock already. +/** + * write_seqlock() - start a seqlock_t write side critical section + * @sl: Pointer to seqlock_t + * + * write_seqlock opens a write side critical section for the given + * seqlock_t. It also implicitly acquires the spinlock_t embedded inside + * that sequential lock. All seqlock_t write side sections are thus + * automatically serialized and non-preemptible. + * + * Context: if the seqlock_t read section, or other write side critical + * sections, can be invoked from hardirq or softirq contexts, use the + * _irqsave or _bh variants of this function instead. */ static inline void write_seqlock(seqlock_t *sl) { spin_lock(&sl->lock); - write_seqcount_begin(&sl->seqcount); + __write_seqcount_begin(&sl->seqcount); } +/** + * write_sequnlock() - end a seqlock_t write side critical section + * @sl: Pointer to seqlock_t + * + * write_sequnlock closes the (serialized and non-preemptible) write side + * critical section of given seqlock_t. + */ static inline void write_sequnlock(seqlock_t *sl) { write_seqcount_end(&sl->seqcount); spin_unlock(&sl->lock); } +/** + * write_seqlock_bh() - start a softirqs-disabled seqlock_t write section + * @sl: Pointer to seqlock_t + * + * _bh variant of write_seqlock(). Use only if the read side section, or + * other write side sections, can be invoked from softirq contexts. + */ static inline void write_seqlock_bh(seqlock_t *sl) { spin_lock_bh(&sl->lock); - write_seqcount_begin(&sl->seqcount); + __write_seqcount_begin(&sl->seqcount); } +/** + * write_sequnlock_bh() - end a softirqs-disabled seqlock_t write section + * @sl: Pointer to seqlock_t + * + * write_sequnlock_bh closes the serialized, non-preemptible, and + * softirqs-disabled, seqlock_t write side critical section opened with + * write_seqlock_bh(). + */ static inline void write_sequnlock_bh(seqlock_t *sl) { write_seqcount_end(&sl->seqcount); spin_unlock_bh(&sl->lock); } +/** + * write_seqlock_irq() - start a non-interruptible seqlock_t write section + * @sl: Pointer to seqlock_t + * + * _irq variant of write_seqlock(). Use only if the read side section, or + * other write sections, can be invoked from hardirq contexts. + */ static inline void write_seqlock_irq(seqlock_t *sl) { spin_lock_irq(&sl->lock); - write_seqcount_begin(&sl->seqcount); + __write_seqcount_begin(&sl->seqcount); } +/** + * write_sequnlock_irq() - end a non-interruptible seqlock_t write section + * @sl: Pointer to seqlock_t + * + * write_sequnlock_irq closes the serialized and non-interruptible + * seqlock_t write side section opened with write_seqlock_irq(). + */ static inline void write_sequnlock_irq(seqlock_t *sl) { write_seqcount_end(&sl->seqcount); @@ -527,13 +666,32 @@ static inline unsigned long __write_seqlock_irqsave(seqlock_t *sl) unsigned long flags; spin_lock_irqsave(&sl->lock, flags); - write_seqcount_begin(&sl->seqcount); + __write_seqcount_begin(&sl->seqcount); return flags; } +/** + * write_seqlock_irqsave() - start a non-interruptible seqlock_t write + * section + * @lock: Pointer to seqlock_t + * @flags: Stack-allocated storage for saving caller's local interrupt + * state, to be passed to write_sequnlock_irqrestore(). + * + * _irqsave variant of write_seqlock(). Use it only if the read side + * section, or other write sections, can be invoked from hardirq context. + */ #define write_seqlock_irqsave(lock, flags) \ do { flags = __write_seqlock_irqsave(lock); } while (0) +/** + * write_sequnlock_irqrestore() - end non-interruptible seqlock_t write + * section + * @sl: Pointer to seqlock_t + * @flags: Caller's saved interrupt state, from write_seqlock_irqsave() + * + * write_sequnlock_irqrestore closes the serialized and non-interruptible + * seqlock_t write section previously opened with write_seqlock_irqsave(). + */ static inline void write_sequnlock_irqrestore(seqlock_t *sl, unsigned long flags) { @@ -541,65 +699,79 @@ write_sequnlock_irqrestore(seqlock_t *sl, unsigned long flags) spin_unlock_irqrestore(&sl->lock, flags); } -/* - * A locking reader exclusively locks out other writers and locking readers, - * but doesn't update the sequence number. Acts like a normal spin_lock/unlock. - * Don't need preempt_disable() because that is in the spin_lock already. +/** + * read_seqlock_excl() - begin a seqlock_t locking reader section + * @sl: Pointer to seqlock_t + * + * read_seqlock_excl opens a seqlock_t locking reader critical section. A + * locking reader exclusively locks out *both* other writers *and* other + * locking readers, but it does not update the embedded sequence number. + * + * Locking readers act like a normal spin_lock()/spin_unlock(). + * + * Context: if the seqlock_t write section, *or other read sections*, can + * be invoked from hardirq or softirq contexts, use the _irqsave or _bh + * variant of this function instead. + * + * The opened read section must be closed with read_sequnlock_excl(). */ static inline void read_seqlock_excl(seqlock_t *sl) { spin_lock(&sl->lock); } +/** + * read_sequnlock_excl() - end a seqlock_t locking reader critical section + * @sl: Pointer to seqlock_t + */ static inline void read_sequnlock_excl(seqlock_t *sl) { spin_unlock(&sl->lock); } /** - * read_seqbegin_or_lock - begin a sequence number check or locking block - * @lock: sequence lock - * @seq : sequence number to be checked + * read_seqlock_excl_bh() - start a seqlock_t locking reader section with + * softirqs disabled + * @sl: Pointer to seqlock_t * - * First try it once optimistically without taking the lock. If that fails, - * take the lock. The sequence number is also used as a marker for deciding - * whether to be a reader (even) or writer (odd). - * N.B. seq must be initialized to an even number to begin with. + * _bh variant of read_seqlock_excl(). Use this variant only if the + * seqlock_t write side section, *or other read sections*, can be invoked + * from softirq contexts. */ -static inline void read_seqbegin_or_lock(seqlock_t *lock, int *seq) -{ - if (!(*seq & 1)) /* Even */ - *seq = read_seqbegin(lock); - else /* Odd */ - read_seqlock_excl(lock); -} - -static inline int need_seqretry(seqlock_t *lock, int seq) -{ - return !(seq & 1) && read_seqretry(lock, seq); -} - -static inline void done_seqretry(seqlock_t *lock, int seq) -{ - if (seq & 1) - read_sequnlock_excl(lock); -} - static inline void read_seqlock_excl_bh(seqlock_t *sl) { spin_lock_bh(&sl->lock); } +/** + * read_sequnlock_excl_bh() - stop a seqlock_t softirq-disabled locking + * reader section + * @sl: Pointer to seqlock_t + */ static inline void read_sequnlock_excl_bh(seqlock_t *sl) { spin_unlock_bh(&sl->lock); } +/** + * read_seqlock_excl_irq() - start a non-interruptible seqlock_t locking + * reader section + * @sl: Pointer to seqlock_t + * + * _irq variant of read_seqlock_excl(). Use this only if the seqlock_t + * write side section, *or other read sections*, can be invoked from a + * hardirq context. + */ static inline void read_seqlock_excl_irq(seqlock_t *sl) { spin_lock_irq(&sl->lock); } +/** + * read_sequnlock_excl_irq() - end an interrupts-disabled seqlock_t + * locking reader section + * @sl: Pointer to seqlock_t + */ static inline void read_sequnlock_excl_irq(seqlock_t *sl) { spin_unlock_irq(&sl->lock); @@ -613,15 +785,117 @@ static inline unsigned long __read_seqlock_excl_irqsave(seqlock_t *sl) return flags; } +/** + * read_seqlock_excl_irqsave() - start a non-interruptible seqlock_t + * locking reader section + * @lock: Pointer to seqlock_t + * @flags: Stack-allocated storage for saving caller's local interrupt + * state, to be passed to read_sequnlock_excl_irqrestore(). + * + * _irqsave variant of read_seqlock_excl(). Use this only if the seqlock_t + * write side section, *or other read sections*, can be invoked from a + * hardirq context. + */ #define read_seqlock_excl_irqsave(lock, flags) \ do { flags = __read_seqlock_excl_irqsave(lock); } while (0) +/** + * read_sequnlock_excl_irqrestore() - end non-interruptible seqlock_t + * locking reader section + * @sl: Pointer to seqlock_t + * @flags: Caller saved interrupt state, from read_seqlock_excl_irqsave() + */ static inline void read_sequnlock_excl_irqrestore(seqlock_t *sl, unsigned long flags) { spin_unlock_irqrestore(&sl->lock, flags); } +/** + * read_seqbegin_or_lock() - begin a seqlock_t lockless or locking reader + * @lock: Pointer to seqlock_t + * @seq : Marker and return parameter. If the passed value is even, the + * reader will become a *lockless* seqlock_t reader as in read_seqbegin(). + * If the passed value is odd, the reader will become a *locking* reader + * as in read_seqlock_excl(). In the first call to this function, the + * caller *must* initialize and pass an even value to @seq; this way, a + * lockless read can be optimistically tried first. + * + * read_seqbegin_or_lock is an API designed to optimistically try a normal + * lockless seqlock_t read section first. If an odd counter is found, the + * lockless read trial has failed, and the next read iteration transforms + * itself into a full seqlock_t locking reader. + * + * This is typically used to avoid seqlock_t lockless readers starvation + * (too much retry loops) in the case of a sharp spike in write side + * activity. + * + * Context: if the seqlock_t write section, *or other read sections*, can + * be invoked from hardirq or softirq contexts, use the _irqsave or _bh + * variant of this function instead. + * + * Check Documentation/locking/seqlock.rst for template example code. + * + * Return: the encountered sequence counter value, through the @seq + * parameter, which is overloaded as a return parameter. This returned + * value must be checked with need_seqretry(). If the read section need to + * be retried, this returned value must also be passed as the @seq + * parameter of the next read_seqbegin_or_lock() iteration. + */ +static inline void read_seqbegin_or_lock(seqlock_t *lock, int *seq) +{ + if (!(*seq & 1)) /* Even */ + *seq = read_seqbegin(lock); + else /* Odd */ + read_seqlock_excl(lock); +} + +/** + * need_seqretry() - validate seqlock_t "locking or lockless" read section + * @lock: Pointer to seqlock_t + * @seq: sequence count, from read_seqbegin_or_lock() + * + * Return: true if a read section retry is required, false otherwise + */ +static inline int need_seqretry(seqlock_t *lock, int seq) +{ + return !(seq & 1) && read_seqretry(lock, seq); +} + +/** + * done_seqretry() - end seqlock_t "locking or lockless" reader section + * @lock: Pointer to seqlock_t + * @seq: count, from read_seqbegin_or_lock() + * + * done_seqretry finishes the seqlock_t read side critical section started + * with read_seqbegin_or_lock() and validated by need_seqretry(). + */ +static inline void done_seqretry(seqlock_t *lock, int seq) +{ + if (seq & 1) + read_sequnlock_excl(lock); +} + +/** + * read_seqbegin_or_lock_irqsave() - begin a seqlock_t lockless reader, or + * a non-interruptible locking reader + * @lock: Pointer to seqlock_t + * @seq: Marker and return parameter. Check read_seqbegin_or_lock(). + * + * This is the _irqsave variant of read_seqbegin_or_lock(). Use it only if + * the seqlock_t write section, *or other read sections*, can be invoked + * from hardirq context. + * + * Note: Interrupts will be disabled only for "locking reader" mode. + * + * Return: + * + * 1. The saved local interrupts state in case of a locking reader, to + * be passed to done_seqretry_irqrestore(). + * + * 2. The encountered sequence counter value, returned through @seq + * overloaded as a return parameter. Check read_seqbegin_or_lock(). + */ static inline unsigned long read_seqbegin_or_lock_irqsave(seqlock_t *lock, int *seq) { @@ -635,6 +909,18 @@ read_seqbegin_or_lock_irqsave(seqlock_t *lock, int *seq) return flags; } +/** + * done_seqretry_irqrestore() - end a seqlock_t lockless reader, or a + * non-interruptible locking reader section + * @lock: Pointer to seqlock_t + * @seq: Count, from read_seqbegin_or_lock_irqsave() + * @flags: Caller's saved local interrupt state in case of a locking + * reader, also from read_seqbegin_or_lock_irqsave() + * + * This is the _irqrestore variant of done_seqretry(). The read section + * must've been opened with read_seqbegin_or_lock_irqsave(), and validated + * by need_seqretry(). + */ static inline void done_seqretry_irqrestore(seqlock_t *lock, int seq, unsigned long flags) { diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 9fd550e7946a..791f4844efeb 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -462,10 +462,104 @@ extern void uart_handle_cts_change(struct uart_port *uport, extern void uart_insert_char(struct uart_port *port, unsigned int status, unsigned int overrun, unsigned int ch, unsigned int flag); -extern int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch); -extern int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch); -extern void uart_unlock_and_check_sysrq(struct uart_port *port, unsigned long flags); -extern int uart_handle_break(struct uart_port *port); +#ifdef CONFIG_MAGIC_SYSRQ_SERIAL +#define SYSRQ_TIMEOUT (HZ * 5) + +bool uart_try_toggle_sysrq(struct uart_port *port, unsigned int ch); + +static inline int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch) +{ + if (!port->sysrq) + return 0; + + if (ch && time_before(jiffies, port->sysrq)) { + if (sysrq_mask()) { + handle_sysrq(ch); + port->sysrq = 0; + return 1; + } + if (uart_try_toggle_sysrq(port, ch)) + return 1; + } + port->sysrq = 0; + + return 0; +} + +static inline int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch) +{ + if (!port->sysrq) + return 0; + + if (ch && time_before(jiffies, port->sysrq)) { + if (sysrq_mask()) { + port->sysrq_ch = ch; + port->sysrq = 0; + return 1; + } + if (uart_try_toggle_sysrq(port, ch)) + return 1; + } + port->sysrq = 0; + + return 0; +} + +static inline void uart_unlock_and_check_sysrq(struct uart_port *port, unsigned long irqflags) +{ + int sysrq_ch; + + if (!port->has_sysrq) { + spin_unlock_irqrestore(&port->lock, irqflags); + return; + } + + sysrq_ch = port->sysrq_ch; + port->sysrq_ch = 0; + + spin_unlock_irqrestore(&port->lock, irqflags); + + if (sysrq_ch) + handle_sysrq(sysrq_ch); +} +#else /* CONFIG_MAGIC_SYSRQ_SERIAL */ +static inline int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch) +{ + return 0; +} +static inline int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch) +{ + return 0; +} +static inline void uart_unlock_and_check_sysrq(struct uart_port *port, unsigned long irqflags) +{ + spin_unlock_irqrestore(&port->lock, irqflags); +} +#endif /* CONFIG_MAGIC_SYSRQ_SERIAL */ + +/* + * We do the SysRQ and SAK checking like this... + */ +static inline int uart_handle_break(struct uart_port *port) +{ + struct uart_state *state = port->state; + + if (port->handle_break) + port->handle_break(port); + +#ifdef CONFIG_MAGIC_SYSRQ_SERIAL + if (port->has_sysrq && uart_console(port)) { + if (!port->sysrq) { + port->sysrq = jiffies + SYSRQ_TIMEOUT; + return 1; + } + port->sysrq = 0; + } +#endif + if (port->flags & UPF_SAK) + do_SAK(state->port.tty); + return 0; +} /* * UART_ENABLE_MS - determine if port should enable modem status irqs diff --git a/include/linux/skmsg.h b/include/linux/skmsg.h index 08674cd14d5a..1e9ed840b9fc 100644 --- a/include/linux/skmsg.h +++ b/include/linux/skmsg.h @@ -430,6 +430,19 @@ static inline void psock_set_prog(struct bpf_prog **pprog, bpf_prog_put(prog); } +static inline int psock_replace_prog(struct bpf_prog **pprog, + struct bpf_prog *prog, + struct bpf_prog *old) +{ + if (cmpxchg(pprog, old, prog) != old) + return -ENOENT; + + if (old) + bpf_prog_put(old); + + return 0; +} + static inline void psock_progs_drop(struct sk_psock_progs *progs) { psock_set_prog(&progs->msg_parser, NULL); diff --git a/include/linux/smp.h b/include/linux/smp.h index 7ee202ad21a6..80d557ef8a11 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -12,29 +12,22 @@ #include <linux/list.h> #include <linux/cpumask.h> #include <linux/init.h> -#include <linux/llist.h> +#include <linux/smp_types.h> typedef void (*smp_call_func_t)(void *info); typedef bool (*smp_cond_func_t)(int cpu, void *info); -enum { - CSD_FLAG_LOCK = 0x01, - - /* IRQ_WORK_flags */ - - CSD_TYPE_ASYNC = 0x00, - CSD_TYPE_SYNC = 0x10, - CSD_TYPE_IRQ_WORK = 0x20, - CSD_TYPE_TTWU = 0x30, - CSD_FLAG_TYPE_MASK = 0xF0, -}; - /* * structure shares (partial) layout with struct irq_work */ struct __call_single_data { - struct llist_node llist; - unsigned int flags; + union { + struct __call_single_node node; + struct { + struct llist_node llist; + unsigned int flags; + }; + }; smp_call_func_t func; void *info; }; diff --git a/include/linux/smp_types.h b/include/linux/smp_types.h new file mode 100644 index 000000000000..364b3ae3e41d --- /dev/null +++ b/include/linux/smp_types.h @@ -0,0 +1,66 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_SMP_TYPES_H +#define __LINUX_SMP_TYPES_H + +#include <linux/llist.h> + +enum { + CSD_FLAG_LOCK = 0x01, + + IRQ_WORK_PENDING = 0x01, + IRQ_WORK_BUSY = 0x02, + IRQ_WORK_LAZY = 0x04, /* No IPI, wait for tick */ + IRQ_WORK_HARD_IRQ = 0x08, /* IRQ context on PREEMPT_RT */ + + IRQ_WORK_CLAIMED = (IRQ_WORK_PENDING | IRQ_WORK_BUSY), + + CSD_TYPE_ASYNC = 0x00, + CSD_TYPE_SYNC = 0x10, + CSD_TYPE_IRQ_WORK = 0x20, + CSD_TYPE_TTWU = 0x30, + + CSD_FLAG_TYPE_MASK = 0xF0, +}; + +/* + * struct __call_single_node is the primary type on + * smp.c:call_single_queue. + * + * flush_smp_call_function_queue() only reads the type from + * __call_single_node::u_flags as a regular load, the above + * (anonymous) enum defines all the bits of this word. + * + * Other bits are not modified until the type is known. + * + * CSD_TYPE_SYNC/ASYNC: + * struct { + * struct llist_node node; + * unsigned int flags; + * smp_call_func_t func; + * void *info; + * }; + * + * CSD_TYPE_IRQ_WORK: + * struct { + * struct llist_node node; + * atomic_t flags; + * void (*func)(struct irq_work *); + * }; + * + * CSD_TYPE_TTWU: + * struct { + * struct llist_node node; + * unsigned int flags; + * }; + * + */ + +struct __call_single_node { + struct llist_node llist; + union { + unsigned int u_flags; + atomic_t a_flags; + }; +}; + +#endif /* __LINUX_SMP_TYPES_H */ diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index d3770b3f9d9a..f2f12d746dbd 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -56,6 +56,7 @@ #include <linux/kernel.h> #include <linux/stringify.h> #include <linux/bottom_half.h> +#include <linux/lockdep.h> #include <asm/barrier.h> #include <asm/mmiowb.h> diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h index 6102e6bff3ae..b981caafe8bf 100644 --- a/include/linux/spinlock_types.h +++ b/include/linux/spinlock_types.h @@ -15,7 +15,7 @@ # include <linux/spinlock_types_up.h> #endif -#include <linux/lockdep.h> +#include <linux/lockdep_types.h> typedef struct raw_spinlock { arch_spinlock_t raw_lock; diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h index c28955132234..86f150c2a6b6 100644 --- a/include/linux/string_helpers.h +++ b/include/linux/string_helpers.h @@ -2,6 +2,7 @@ #ifndef _LINUX_STRING_HELPERS_H_ #define _LINUX_STRING_HELPERS_H_ +#include <linux/ctype.h> #include <linux/types.h> struct file; @@ -75,6 +76,20 @@ static inline int string_escape_str_any_np(const char *src, char *dst, return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, only); } +static inline void string_upper(char *dst, const char *src) +{ + do { + *dst++ = toupper(*src); + } while (*src++); +} + +static inline void string_lower(char *dst, const char *src) +{ + do { + *dst++ = tolower(*src); + } while (*src++); +} + char *kstrdup_quotable(const char *src, gfp_t gfp); char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp); char *kstrdup_quotable_file(struct file *file, gfp_t gfp); diff --git a/include/linux/swap.h b/include/linux/swap.h index 4c5974bb9ba9..5b3216ba39a9 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -313,6 +313,7 @@ struct vma_swap_readahead { }; /* linux/mm/workingset.c */ +void workingset_age_nonresident(struct lruvec *lruvec, unsigned long nr_pages); void *workingset_eviction(struct page *page, struct mem_cgroup *target_memcg); void workingset_refault(struct page *page, void *shadow); void workingset_activation(struct page *page); diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 7c354c2955f5..b951a87da987 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -1360,7 +1360,7 @@ static inline long ksys_lchown(const char __user *filename, uid_t user, extern long do_sys_ftruncate(unsigned int fd, loff_t length, int small); -static inline long ksys_ftruncate(unsigned int fd, unsigned long length) +static inline long ksys_ftruncate(unsigned int fd, loff_t length) { return do_sys_ftruncate(fd, length, 1); } diff --git a/include/linux/task_work.h b/include/linux/task_work.h index bd9a6a91c097..0fb93aafa478 100644 --- a/include/linux/task_work.h +++ b/include/linux/task_work.h @@ -13,7 +13,10 @@ init_task_work(struct callback_head *twork, task_work_func_t func) twork->func = func; } -int task_work_add(struct task_struct *task, struct callback_head *twork, bool); +#define TWA_RESUME 1 +#define TWA_SIGNAL 2 +int task_work_add(struct task_struct *task, struct callback_head *twork, int); + struct callback_head *task_work_cancel(struct task_struct *, task_work_func_t); void task_work_run(void); diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 9aac824c523c..a1bbaa1c1a3a 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -220,7 +220,9 @@ struct tcp_sock { } rack; u16 advmss; /* Advertised MSS */ u8 compressed_ack; - u8 dup_ack_counter; + u8 dup_ack_counter:2, + tlp_retrans:1, /* TLP is a retransmission */ + unused:5; u32 chrono_start; /* Start time in jiffies of a TCP chrono */ u32 chrono_stat[3]; /* Time in jiffies for chrono_stat stats */ u8 chrono_type:2, /* current chronograph type */ @@ -243,7 +245,7 @@ struct tcp_sock { save_syn:1, /* Save headers of SYN packet */ is_cwnd_limited:1,/* forward progress limited by snd_cwnd? */ syn_smc:1; /* SYN includes SMC */ - u32 tlp_high_seq; /* snd_nxt at the time of TLP retransmit. */ + u32 tlp_high_seq; /* snd_nxt at the time of TLP */ u32 tcp_tx_delay; /* delay (in usec) added to TX packets */ u64 tcp_wstamp_ns; /* departure time for next sent data packet */ diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index b27e2ffa96c1..d5471d6fa778 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -222,9 +222,9 @@ extern bool timekeeping_rtc_skipresume(void); extern void timekeeping_inject_sleeptime64(const struct timespec64 *delta); -/* +/** * struct system_time_snapshot - simultaneous raw/real time capture with - * counter value + * counter value * @cycles: Clocksource counter value to produce the system times * @real: Realtime system time * @raw: Monotonic raw system time @@ -239,9 +239,9 @@ struct system_time_snapshot { u8 cs_was_changed_seq; }; -/* +/** * struct system_device_crosststamp - system/device cross-timestamp - * (syncronized capture) + * (synchronized capture) * @device: Device time * @sys_realtime: Realtime simultaneous with device time * @sys_monoraw: Monotonic raw simultaneous with device time @@ -252,12 +252,12 @@ struct system_device_crosststamp { ktime_t sys_monoraw; }; -/* +/** * struct system_counterval_t - system counter value with the pointer to the - * corresponding clocksource + * corresponding clocksource * @cycles: System counter value * @cs: Clocksource corresponding to system counter value. Used by - * timekeeping code to verify comparibility of two cycle values + * timekeeping code to verify comparibility of two cycle values */ struct system_counterval_t { u64 cycles; diff --git a/include/linux/torture.h b/include/linux/torture.h index 629b66e6c161..7f65bd1dd307 100644 --- a/include/linux/torture.h +++ b/include/linux/torture.h @@ -55,6 +55,11 @@ struct torture_random_state { #define DEFINE_TORTURE_RANDOM_PERCPU(name) \ DEFINE_PER_CPU(struct torture_random_state, name) unsigned long torture_random(struct torture_random_state *trsp); +static inline void torture_random_init(struct torture_random_state *trsp) +{ + trsp->trs_state = 0; + trsp->trs_count = 0; +} /* Task shuffler, which causes CPUs to occasionally go idle. */ void torture_shuffle_task_register(struct task_struct *tp); diff --git a/include/linux/tpm.h b/include/linux/tpm.h index 03e9b184411b..8f4ff39f51e7 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -96,6 +96,7 @@ struct tpm_space { u8 *context_buf; u32 session_tbl[3]; u8 *session_buf; + u32 buf_size; }; struct tpm_bios_log { diff --git a/include/linux/tpm_eventlog.h b/include/linux/tpm_eventlog.h index 4f8c90c93c29..739ba9a03ec1 100644 --- a/include/linux/tpm_eventlog.h +++ b/include/linux/tpm_eventlog.h @@ -81,6 +81,8 @@ struct tcg_efi_specid_event_algs { u16 digest_size; } __packed; +#define TCG_SPECID_SIG "Spec ID Event03" + struct tcg_efi_specid_event_head { u8 signature[16]; u32 platform_class; @@ -171,6 +173,7 @@ static inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event, int i; int j; u32 count, event_type; + const u8 zero_digest[sizeof(event_header->digest)] = {0}; marker = event; marker_start = marker; @@ -198,10 +201,26 @@ static inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event, count = READ_ONCE(event->count); event_type = READ_ONCE(event->event_type); + /* Verify that it's the log header */ + if (event_header->pcr_idx != 0 || + event_header->event_type != NO_ACTION || + memcmp(event_header->digest, zero_digest, sizeof(zero_digest))) { + size = 0; + goto out; + } + efispecid = (struct tcg_efi_specid_event_head *)event_header->event; - /* Check if event is malformed. */ - if (count > efispecid->num_algs) { + /* + * Perform validation of the event in order to identify malformed + * events. This function may be asked to parse arbitrary byte sequences + * immediately following a valid event log. The caller expects this + * function to recognize that the byte sequence is not a valid event + * and to return an event size of 0. + */ + if (memcmp(efispecid->signature, TCG_SPECID_SIG, + sizeof(TCG_SPECID_SIG)) || + !efispecid->num_algs || count != efispecid->num_algs) { size = 0; goto out; } diff --git a/include/linux/types.h b/include/linux/types.h index d3021c879179..a147977602b5 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -167,6 +167,8 @@ typedef struct { int counter; } atomic_t; +#define ATOMIC_INIT(i) { (i) } + #ifdef CONFIG_64BIT typedef struct { s64 counter; diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 48bb681e6c2a..0221f852a7e1 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -106,7 +106,6 @@ extern void *vzalloc(unsigned long size); extern void *vmalloc_user(unsigned long size); extern void *vmalloc_node(unsigned long size, int node); extern void *vzalloc_node(unsigned long size, int node); -extern void *vmalloc_exec(unsigned long size); extern void *vmalloc_32(unsigned long size); extern void *vmalloc_32_user(unsigned long size); extern void *__vmalloc(unsigned long size, gfp_t gfp_mask); diff --git a/include/linux/xattr.h b/include/linux/xattr.h index 47eaa34f8761..c5afaf8ca7a2 100644 --- a/include/linux/xattr.h +++ b/include/linux/xattr.h @@ -15,6 +15,7 @@ #include <linux/slab.h> #include <linux/types.h> #include <linux/spinlock.h> +#include <linux/mm.h> #include <uapi/linux/xattr.h> struct inode; @@ -94,7 +95,7 @@ static inline void simple_xattrs_free(struct simple_xattrs *xattrs) list_for_each_entry_safe(xattr, node, &xattrs->head, list) { kfree(xattr->name); - kfree(xattr); + kvfree(xattr); } } diff --git a/include/net/addrconf.h b/include/net/addrconf.h index fdb07105384c..8418b7d38468 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -274,6 +274,7 @@ int ipv6_sock_ac_join(struct sock *sk, int ifindex, const struct in6_addr *addr); int ipv6_sock_ac_drop(struct sock *sk, int ifindex, const struct in6_addr *addr); +void __ipv6_sock_ac_close(struct sock *sk); void ipv6_sock_ac_close(struct sock *sk); int __ipv6_dev_ac_inc(struct inet6_dev *idev, const struct in6_addr *addr); diff --git a/include/net/devlink.h b/include/net/devlink.h index 1df6dfec26c2..95b0322a2a82 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -718,6 +718,7 @@ enum devlink_trap_group_generic_id { DEVLINK_TRAP_GROUP_GENERIC_ID_PIM, DEVLINK_TRAP_GROUP_GENERIC_ID_UC_LB, DEVLINK_TRAP_GROUP_GENERIC_ID_LOCAL_DELIVERY, + DEVLINK_TRAP_GROUP_GENERIC_ID_EXTERNAL_DELIVERY, DEVLINK_TRAP_GROUP_GENERIC_ID_IPV6, DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_EVENT, DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_GENERAL, @@ -915,6 +916,8 @@ enum devlink_trap_group_generic_id { "uc_loopback" #define DEVLINK_TRAP_GROUP_GENERIC_NAME_LOCAL_DELIVERY \ "local_delivery" +#define DEVLINK_TRAP_GROUP_GENERIC_NAME_EXTERNAL_DELIVERY \ + "external_delivery" #define DEVLINK_TRAP_GROUP_GENERIC_NAME_IPV6 \ "ipv6" #define DEVLINK_TRAP_GROUP_GENERIC_NAME_PTP_EVENT \ diff --git a/include/net/dst.h b/include/net/dst.h index 07adfacd8088..852d8fb36ab7 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -400,7 +400,15 @@ static inline struct neighbour *dst_neigh_lookup(const struct dst_entry *dst, co static inline struct neighbour *dst_neigh_lookup_skb(const struct dst_entry *dst, struct sk_buff *skb) { - struct neighbour *n = dst->ops->neigh_lookup(dst, skb, NULL); + struct neighbour *n = NULL; + + /* The packets from tunnel devices (eg bareudp) may have only + * metadata in the dst pointer of skb. Hence a pointer check of + * neigh_lookup is needed. + */ + if (dst->ops->neigh_lookup) + n = dst->ops->neigh_lookup(dst, skb, NULL); + return IS_ERR(n) ? NULL : n; } diff --git a/include/net/flow_dissector.h b/include/net/flow_dissector.h index a7eba43fe4e4..4b6e36288ddd 100644 --- a/include/net/flow_dissector.h +++ b/include/net/flow_dissector.h @@ -372,7 +372,8 @@ flow_dissector_init_keys(struct flow_dissector_key_control *key_control, } #ifdef CONFIG_BPF_SYSCALL -int flow_dissector_bpf_prog_attach(struct net *net, struct bpf_prog *prog); +int flow_dissector_bpf_prog_attach_check(struct net *net, + struct bpf_prog *prog); #endif /* CONFIG_BPF_SYSCALL */ #endif diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h index f2c8311a0433..3eaf25f68b79 100644 --- a/include/net/flow_offload.h +++ b/include/net/flow_offload.h @@ -5,7 +5,6 @@ #include <linux/list.h> #include <linux/netlink.h> #include <net/flow_dissector.h> -#include <linux/rhashtable.h> struct flow_match { struct flow_dissector *dissector; @@ -450,6 +449,7 @@ struct flow_block_indr { struct net_device *dev; enum flow_block_binder_type binder_type; void *data; + void *cb_priv; void (*cleanup)(struct flow_block_cb *block_cb); }; @@ -467,6 +467,13 @@ struct flow_block_cb { struct flow_block_cb *flow_block_cb_alloc(flow_setup_cb_t *cb, void *cb_ident, void *cb_priv, void (*release)(void *cb_priv)); +struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb, + void *cb_ident, void *cb_priv, + void (*release)(void *cb_priv), + struct flow_block_offload *bo, + struct net_device *dev, void *data, + void *indr_cb_priv, + void (*cleanup)(struct flow_block_cb *block_cb)); void flow_block_cb_free(struct flow_block_cb *block_cb); struct flow_block_cb *flow_block_cb_lookup(struct flow_block *block, @@ -488,6 +495,13 @@ static inline void flow_block_cb_remove(struct flow_block_cb *block_cb, list_move(&block_cb->list, &offload->cb_list); } +static inline void flow_indr_block_cb_remove(struct flow_block_cb *block_cb, + struct flow_block_offload *offload) +{ + list_del(&block_cb->indr.list); + list_move(&block_cb->list, &offload->cb_list); +} + bool flow_block_cb_is_busy(flow_setup_cb_t *cb, void *cb_ident, struct list_head *driver_block_list); @@ -532,11 +546,13 @@ static inline void flow_block_init(struct flow_block *flow_block) } typedef int flow_indr_block_bind_cb_t(struct net_device *dev, void *cb_priv, - enum tc_setup_type type, void *type_data); + enum tc_setup_type type, void *type_data, + void *data, + void (*cleanup)(struct flow_block_cb *block_cb)); int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv); void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv, - flow_setup_cb_t *setup_cb); + void (*release)(void *cb_priv)); int flow_indr_dev_setup_offload(struct net_device *dev, enum tc_setup_type type, void *data, struct flow_block_offload *bo, diff --git a/include/net/genetlink.h b/include/net/genetlink.h index 74950663bb00..6e5f1e1aa822 100644 --- a/include/net/genetlink.h +++ b/include/net/genetlink.h @@ -35,13 +35,6 @@ struct genl_info; * do additional, common, filtering and return an error * @post_doit: called after an operation's doit callback, it may * undo operations done by pre_doit, for example release locks - * @mcast_bind: a socket bound to the given multicast group (which - * is given as the offset into the groups array) - * @mcast_unbind: a socket was unbound from the given multicast group. - * Note that unbind() will not be called symmetrically if the - * generic netlink family is removed while there are still open - * sockets. - * @attrbuf: buffer to store parsed attributes (private) * @mcgrps: multicast groups used by this family * @n_mcgrps: number of multicast groups * @mcgrp_offset: starting number of multicast group IDs in this family @@ -64,9 +57,6 @@ struct genl_family { void (*post_doit)(const struct genl_ops *ops, struct sk_buff *skb, struct genl_info *info); - int (*mcast_bind)(struct net *net, int group); - void (*mcast_unbind)(struct net *net, int group); - struct nlattr ** attrbuf; /* private */ const struct genl_ops * ops; const struct genl_multicast_group *mcgrps; unsigned int n_ops; diff --git a/include/net/gue.h b/include/net/gue.h index 3a6595bfa641..e42402f180b7 100644 --- a/include/net/gue.h +++ b/include/net/gue.h @@ -21,7 +21,7 @@ * | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * - * C bit indicates contol message when set, data message when unset. + * C bit indicates control message when set, data message when unset. * For a control message, proto/ctype is interpreted as a type of * control message. For data messages, proto/ctype is the IP protocol * of the next header. diff --git a/include/net/inet_ecn.h b/include/net/inet_ecn.h index 0f0d1efe06dd..e1eaf1780288 100644 --- a/include/net/inet_ecn.h +++ b/include/net/inet_ecn.h @@ -4,6 +4,7 @@ #include <linux/ip.h> #include <linux/skbuff.h> +#include <linux/if_vlan.h> #include <net/inet_sock.h> #include <net/dsfield.h> @@ -172,7 +173,7 @@ static inline void ipv6_copy_dscp(unsigned int dscp, struct ipv6hdr *inner) static inline int INET_ECN_set_ce(struct sk_buff *skb) { - switch (skb->protocol) { + switch (skb_protocol(skb, true)) { case cpu_to_be16(ETH_P_IP): if (skb_network_header(skb) + sizeof(struct iphdr) <= skb_tail_pointer(skb)) @@ -191,7 +192,7 @@ static inline int INET_ECN_set_ce(struct sk_buff *skb) static inline int INET_ECN_set_ect1(struct sk_buff *skb) { - switch (skb->protocol) { + switch (skb_protocol(skb, true)) { case cpu_to_be16(ETH_P_IP): if (skb_network_header(skb) + sizeof(struct iphdr) <= skb_tail_pointer(skb)) @@ -272,12 +273,16 @@ static inline int IP_ECN_decapsulate(const struct iphdr *oiph, { __u8 inner; - if (skb->protocol == htons(ETH_P_IP)) + switch (skb_protocol(skb, true)) { + case htons(ETH_P_IP): inner = ip_hdr(skb)->tos; - else if (skb->protocol == htons(ETH_P_IPV6)) + break; + case htons(ETH_P_IPV6): inner = ipv6_get_dsfield(ipv6_hdr(skb)); - else + break; + default: return 0; + } return INET_ECN_decapsulate(skb, oiph->tos, inner); } @@ -287,12 +292,16 @@ static inline int IP6_ECN_decapsulate(const struct ipv6hdr *oipv6h, { __u8 inner; - if (skb->protocol == htons(ETH_P_IP)) + switch (skb_protocol(skb, true)) { + case htons(ETH_P_IP): inner = ip_hdr(skb)->tos; - else if (skb->protocol == htons(ETH_P_IPV6)) + break; + case htons(ETH_P_IPV6): inner = ipv6_get_dsfield(ipv6_hdr(skb)); - else + break; + default: return 0; + } return INET_ECN_decapsulate(skb, ipv6_get_dsfield(oipv6h), inner); } diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h index 076e5d7db7d3..36025dea7612 100644 --- a/include/net/ip_tunnels.h +++ b/include/net/ip_tunnels.h @@ -290,6 +290,9 @@ int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[], struct ip_tunnel_parm *p, __u32 fwmark); void ip_tunnel_setup(struct net_device *dev, unsigned int net_id); +extern const struct header_ops ip_tunnel_header_ops; +__be16 ip_tunnel_parse_protocol(const struct sk_buff *skb); + struct ip_tunnel_encap_ops { size_t (*encap_hlen)(struct ip_tunnel_encap *e); int (*build_header)(struct sk_buff *skb, struct ip_tunnel_encap *e, diff --git a/include/net/netns/bpf.h b/include/net/netns/bpf.h index a8dce2a380c8..0ca6a1b87185 100644 --- a/include/net/netns/bpf.h +++ b/include/net/netns/bpf.h @@ -9,10 +9,13 @@ #include <linux/bpf-netns.h> struct bpf_prog; +struct bpf_prog_array; struct netns_bpf { - struct bpf_prog __rcu *progs[MAX_NETNS_BPF_ATTACH_TYPE]; - struct bpf_link *links[MAX_NETNS_BPF_ATTACH_TYPE]; + /* Array of programs to run compiled from progs or links */ + struct bpf_prog_array __rcu *run_array[MAX_NETNS_BPF_ATTACH_TYPE]; + struct bpf_prog *progs[MAX_NETNS_BPF_ATTACH_TYPE]; + struct list_head links[MAX_NETNS_BPF_ATTACH_TYPE]; }; #endif /* __NETNS_BPF_H__ */ diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 9092e697059e..ac8c890a2657 100644 --- a/include/net/pkt_sched.h +++ b/include/net/pkt_sched.h @@ -136,17 +136,6 @@ static inline void qdisc_run(struct Qdisc *q) } } -static inline __be16 tc_skb_protocol(const struct sk_buff *skb) -{ - /* We need to take extra care in case the skb came via - * vlan accelerated path. In that case, use skb->vlan_proto - * as the original vlan header was already stripped. - */ - if (skb_vlan_tag_present(skb)) - return skb->vlan_proto; - return skb->protocol; -} - /* Calculate maximal size of packet seen by hard_start_xmit routine of this device. */ diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h index 15b4d9aec7ff..122d9e2d8dfd 100644 --- a/include/net/sctp/constants.h +++ b/include/net/sctp/constants.h @@ -353,11 +353,13 @@ enum { ipv4_is_anycast_6to4(a)) /* Flags used for the bind address copy functions. */ -#define SCTP_ADDR6_ALLOWED 0x00000001 /* IPv6 address is allowed by +#define SCTP_ADDR4_ALLOWED 0x00000001 /* IPv4 address is allowed by local sock family */ -#define SCTP_ADDR4_PEERSUPP 0x00000002 /* IPv4 address is supported by +#define SCTP_ADDR6_ALLOWED 0x00000002 /* IPv6 address is allowed by + local sock family */ +#define SCTP_ADDR4_PEERSUPP 0x00000004 /* IPv4 address is supported by peer */ -#define SCTP_ADDR6_PEERSUPP 0x00000004 /* IPv6 address is supported by +#define SCTP_ADDR6_PEERSUPP 0x00000008 /* IPv6 address is supported by peer */ /* Reasons to retransmit. */ diff --git a/include/net/sock.h b/include/net/sock.h index c53cc42b5ab9..1183507df95b 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -533,7 +533,8 @@ enum sk_pacing { * be copied. */ #define SK_USER_DATA_NOCOPY 1UL -#define SK_USER_DATA_PTRMASK ~(SK_USER_DATA_NOCOPY) +#define SK_USER_DATA_BPF 2UL /* Managed by BPF */ +#define SK_USER_DATA_PTRMASK ~(SK_USER_DATA_NOCOPY | SK_USER_DATA_BPF) /** * sk_user_data_is_nocopy - Test if sk_user_data pointer must not be copied @@ -1848,7 +1849,6 @@ static inline int sk_rx_queue_get(const struct sock *sk) static inline void sk_set_socket(struct sock *sk, struct socket *sock) { - sk_tx_queue_clear(sk); sk->sk_socket = sock; } diff --git a/include/net/xfrm.h b/include/net/xfrm.h index 094fe682f5d7..51f65d23ebaf 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -941,7 +941,7 @@ struct xfrm_dst { static inline struct dst_entry *xfrm_dst_path(const struct dst_entry *dst) { #ifdef CONFIG_XFRM - if (dst->xfrm) { + if (dst->xfrm || (dst->flags & DST_XFRM_QUEUE)) { const struct xfrm_dst *xdst = (const struct xfrm_dst *) dst; return xdst->path; @@ -953,7 +953,7 @@ static inline struct dst_entry *xfrm_dst_path(const struct dst_entry *dst) static inline struct dst_entry *xfrm_dst_child(const struct dst_entry *dst) { #ifdef CONFIG_XFRM - if (dst->xfrm) { + if (dst->xfrm || (dst->flags & DST_XFRM_QUEUE)) { struct xfrm_dst *xdst = (struct xfrm_dst *) dst; return xdst->child; } @@ -1008,6 +1008,7 @@ struct xfrm_offload { #define XFRM_GRO 32 #define XFRM_ESP_NO_TRAILER 64 #define XFRM_DEV_RESUME 128 +#define XFRM_XMIT 256 __u32 status; #define CRYPTO_SUCCESS 1 @@ -1629,13 +1630,16 @@ int xfrm_policy_walk(struct net *net, struct xfrm_policy_walk *walk, void *); void xfrm_policy_walk_done(struct xfrm_policy_walk *walk, struct net *net); int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl); -struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark, u32 if_id, - u8 type, int dir, +struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, + const struct xfrm_mark *mark, + u32 if_id, u8 type, int dir, struct xfrm_selector *sel, struct xfrm_sec_ctx *ctx, int delete, int *err); -struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u32 if_id, u8, - int dir, u32 id, int delete, int *err); +struct xfrm_policy *xfrm_policy_byid(struct net *net, + const struct xfrm_mark *mark, u32 if_id, + u8 type, int dir, u32 id, int delete, + int *err); int xfrm_policy_flush(struct net *net, u8 type, bool task_valid); void xfrm_policy_hash_rebuild(struct net *net); u32 xfrm_get_acqseq(void); diff --git a/include/net/xsk_buff_pool.h b/include/net/xsk_buff_pool.h index a4ff226505c9..6842990e2712 100644 --- a/include/net/xsk_buff_pool.h +++ b/include/net/xsk_buff_pool.h @@ -40,7 +40,7 @@ struct xsk_buff_pool { u32 headroom; u32 chunk_size; u32 frame_len; - bool cheap_dma; + bool dma_need_sync; bool unaligned; void *addrs; struct device *dev; @@ -80,7 +80,7 @@ static inline dma_addr_t xp_get_frame_dma(struct xdp_buff_xsk *xskb) void xp_dma_sync_for_cpu_slow(struct xdp_buff_xsk *xskb); static inline void xp_dma_sync_for_cpu(struct xdp_buff_xsk *xskb) { - if (xskb->pool->cheap_dma) + if (!xskb->pool->dma_need_sync) return; xp_dma_sync_for_cpu_slow(xskb); @@ -91,7 +91,7 @@ void xp_dma_sync_for_device_slow(struct xsk_buff_pool *pool, dma_addr_t dma, static inline void xp_dma_sync_for_device(struct xsk_buff_pool *pool, dma_addr_t dma, size_t size) { - if (pool->cheap_dma) + if (!pool->dma_need_sync) return; xp_dma_sync_for_device_slow(pool, dma, size); diff --git a/include/rdma/rdmavt_qp.h b/include/rdma/rdmavt_qp.h index c4369a6c2951..2f1fc23602cb 100644 --- a/include/rdma/rdmavt_qp.h +++ b/include/rdma/rdmavt_qp.h @@ -305,6 +305,25 @@ struct rvt_rq { spinlock_t lock ____cacheline_aligned_in_smp; }; +/** + * rvt_get_rq_count - count numbers of request work queue entries + * in circular buffer + * @rq: data structure for request queue entry + * @head: head indices of the circular buffer + * @tail: tail indices of the circular buffer + * + * Return - total number of entries in the Receive Queue + */ + +static inline u32 rvt_get_rq_count(struct rvt_rq *rq, u32 head, u32 tail) +{ + u32 count = head - tail; + + if ((s32)count < 0) + count += rq->size; + return count; +} + /* * This structure holds the information that the send tasklet needs * to send a RDMA read response or atomic operation. diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h index 6ce8effa0b12..70cbc5095e72 100644 --- a/include/sound/compress_driver.h +++ b/include/sound/compress_driver.h @@ -66,6 +66,7 @@ struct snd_compr_runtime { * @direction: stream direction, playback/recording * @metadata_set: metadata set flag, true when set * @next_track: has userspace signal next track transition, true when set + * @partial_drain: undergoing partial_drain for stream, true when set * @private_data: pointer to DSP private data * @dma_buffer: allocated buffer if any */ @@ -78,6 +79,7 @@ struct snd_compr_stream { enum snd_compr_direction direction; bool metadata_set; bool next_track; + bool partial_drain; void *private_data; struct snd_dma_buffer dma_buffer; }; @@ -182,7 +184,13 @@ static inline void snd_compr_drain_notify(struct snd_compr_stream *stream) if (snd_BUG_ON(!stream)) return; - stream->runtime->state = SNDRV_PCM_STATE_SETUP; + /* for partial_drain case we are back to running state on success */ + if (stream->partial_drain) { + stream->runtime->state = SNDRV_PCM_STATE_RUNNING; + stream->partial_drain = false; /* clear this flag as well */ + } else { + stream->runtime->state = SNDRV_PCM_STATE_SETUP; + } wake_up(&stream->runtime->sleep); } diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h index b65220685920..8c5e38180fb0 100644 --- a/include/sound/dmaengine_pcm.h +++ b/include/sound/dmaengine_pcm.h @@ -161,4 +161,15 @@ int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream, #define SND_DMAENGINE_PCM_DRV_NAME "snd_dmaengine_pcm" +struct dmaengine_pcm { + struct dma_chan *chan[SNDRV_PCM_STREAM_LAST + 1]; + const struct snd_dmaengine_pcm_config *config; + struct snd_soc_component component; + unsigned int flags; +}; + +static inline struct dmaengine_pcm *soc_component_to_pcm(struct snd_soc_component *p) +{ + return container_of(p, struct dmaengine_pcm, component); +} #endif diff --git a/include/sound/rt5670.h b/include/sound/rt5670.h index f9024c7a1600..02e1d7778354 100644 --- a/include/sound/rt5670.h +++ b/include/sound/rt5670.h @@ -12,6 +12,7 @@ struct rt5670_platform_data { int jd_mode; bool in2_diff; bool dev_gpio; + bool gpio1_is_ext_spk_en; bool dmic_en; unsigned int dmic1_data_pin; diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h index 212257e84fac..71e178c89793 100644 --- a/include/sound/soc-dai.h +++ b/include/sound/soc-dai.h @@ -161,6 +161,7 @@ void snd_soc_dai_resume(struct snd_soc_dai *dai); int snd_soc_dai_compress_new(struct snd_soc_dai *dai, struct snd_soc_pcm_runtime *rtd, int num); bool snd_soc_dai_stream_valid(struct snd_soc_dai *dai, int stream); +void snd_soc_dai_link_set_capabilities(struct snd_soc_dai_link *dai_link); void snd_soc_dai_action(struct snd_soc_dai *dai, int stream, int action); static inline void snd_soc_dai_activate(struct snd_soc_dai *dai, diff --git a/include/sound/soc.h b/include/sound/soc.h index ef5dd28e10a9..3ce7f0f5aa92 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -444,6 +444,10 @@ int devm_snd_soc_register_component(struct device *dev, const struct snd_soc_component_driver *component_driver, struct snd_soc_dai_driver *dai_drv, int num_dai); void snd_soc_unregister_component(struct device *dev); +void snd_soc_unregister_component_by_driver(struct device *dev, + const struct snd_soc_component_driver *component_driver); +struct snd_soc_component *snd_soc_lookup_component_nolocked(struct device *dev, + const char *driver_name); struct snd_soc_component *snd_soc_lookup_component(struct device *dev, const char *driver_name); @@ -1361,6 +1365,10 @@ void snd_soc_remove_pcm_runtime(struct snd_soc_card *card, struct snd_soc_dai *snd_soc_register_dai(struct snd_soc_component *component, struct snd_soc_dai_driver *dai_drv, bool legacy_dai_naming); +struct snd_soc_dai *devm_snd_soc_register_dai(struct device *dev, + struct snd_soc_component *component, + struct snd_soc_dai_driver *dai_drv, + bool legacy_dai_naming); void snd_soc_unregister_dai(struct snd_soc_dai *dai); struct snd_soc_dai *snd_soc_find_dai( diff --git a/include/trace/events/block.h b/include/trace/events/block.h index 93b114226af8..34d64ca306b1 100644 --- a/include/trace/events/block.h +++ b/include/trace/events/block.h @@ -212,6 +212,21 @@ DEFINE_EVENT(block_rq, block_rq_issue, ); /** + * block_rq_merge - merge request with another one in the elevator + * @q: queue holding operation + * @rq: block IO operation operation request + * + * Called when block operation request @rq from queue @q is merged to another + * request queued in the elevator. + */ +DEFINE_EVENT(block_rq, block_rq_merge, + + TP_PROTO(struct request_queue *q, struct request *rq), + + TP_ARGS(q, rq) +); + +/** * block_bio_bounce - used bounce buffer when processing block operation * @q: queue holding the block operation * @bio: block operation diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index 360b0f9d2220..863335ecb7e8 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -31,13 +31,6 @@ struct extent_io_tree; struct prelim_ref; struct btrfs_space_info; -TRACE_DEFINE_ENUM(FLUSH_DELAYED_ITEMS_NR); -TRACE_DEFINE_ENUM(FLUSH_DELAYED_ITEMS); -TRACE_DEFINE_ENUM(FLUSH_DELALLOC); -TRACE_DEFINE_ENUM(FLUSH_DELALLOC_WAIT); -TRACE_DEFINE_ENUM(ALLOC_CHUNK); -TRACE_DEFINE_ENUM(COMMIT_TRANS); - #define show_ref_type(type) \ __print_symbolic(type, \ { BTRFS_TREE_BLOCK_REF_KEY, "TREE_BLOCK_REF" }, \ @@ -67,30 +60,72 @@ TRACE_DEFINE_ENUM(COMMIT_TRANS); (obj >= BTRFS_ROOT_TREE_OBJECTID && \ obj <= BTRFS_QUOTA_TREE_OBJECTID)) ? __show_root_type(obj) : "-" -#define show_fi_type(type) \ - __print_symbolic(type, \ - { BTRFS_FILE_EXTENT_INLINE, "INLINE" }, \ - { BTRFS_FILE_EXTENT_REG, "REG" }, \ - { BTRFS_FILE_EXTENT_PREALLOC, "PREALLOC"}) +#define FLUSH_ACTIONS \ + EM( BTRFS_RESERVE_NO_FLUSH, "BTRFS_RESERVE_NO_FLUSH") \ + EM( BTRFS_RESERVE_FLUSH_LIMIT, "BTRFS_RESERVE_FLUSH_LIMIT") \ + EM( BTRFS_RESERVE_FLUSH_ALL, "BTRFS_RESERVE_FLUSH_ALL") \ + EMe(BTRFS_RESERVE_FLUSH_ALL_STEAL, "BTRFS_RESERVE_FLUSH_ALL_STEAL") + +#define FI_TYPES \ + EM( BTRFS_FILE_EXTENT_INLINE, "INLINE") \ + EM( BTRFS_FILE_EXTENT_REG, "REG") \ + EMe(BTRFS_FILE_EXTENT_PREALLOC, "PREALLOC") + +#define QGROUP_RSV_TYPES \ + EM( BTRFS_QGROUP_RSV_DATA, "DATA") \ + EM( BTRFS_QGROUP_RSV_META_PERTRANS, "META_PERTRANS") \ + EMe(BTRFS_QGROUP_RSV_META_PREALLOC, "META_PREALLOC") + +#define IO_TREE_OWNER \ + EM( IO_TREE_FS_PINNED_EXTENTS, "PINNED_EXTENTS") \ + EM( IO_TREE_FS_EXCLUDED_EXTENTS, "EXCLUDED_EXTENTS") \ + EM( IO_TREE_INODE_IO, "INODE_IO") \ + EM( IO_TREE_INODE_IO_FAILURE, "INODE_IO_FAILURE") \ + EM( IO_TREE_RELOC_BLOCKS, "RELOC_BLOCKS") \ + EM( IO_TREE_TRANS_DIRTY_PAGES, "TRANS_DIRTY_PAGES") \ + EM( IO_TREE_ROOT_DIRTY_LOG_PAGES, "ROOT_DIRTY_LOG_PAGES") \ + EM( IO_TREE_INODE_FILE_EXTENT, "INODE_FILE_EXTENT") \ + EM( IO_TREE_LOG_CSUM_RANGE, "LOG_CSUM_RANGE") \ + EMe(IO_TREE_SELFTEST, "SELFTEST") + +#define FLUSH_STATES \ + EM( FLUSH_DELAYED_ITEMS_NR, "FLUSH_DELAYED_ITEMS_NR") \ + EM( FLUSH_DELAYED_ITEMS, "FLUSH_DELAYED_ITEMS") \ + EM( FLUSH_DELALLOC, "FLUSH_DELALLOC") \ + EM( FLUSH_DELALLOC_WAIT, "FLUSH_DELALLOC_WAIT") \ + EM( FLUSH_DELAYED_REFS_NR, "FLUSH_DELAYED_REFS_NR") \ + EM( FLUSH_DELAYED_REFS, "FLUSH_ELAYED_REFS") \ + EM( ALLOC_CHUNK, "ALLOC_CHUNK") \ + EM( ALLOC_CHUNK_FORCE, "ALLOC_CHUNK_FORCE") \ + EM( RUN_DELAYED_IPUTS, "RUN_DELAYED_IPUTS") \ + EMe(COMMIT_TRANS, "COMMIT_TRANS") + +/* + * First define the enums in the above macros to be exported to userspace via + * TRACE_DEFINE_ENUM(). + */ + +#undef EM +#undef EMe +#define EM(a, b) TRACE_DEFINE_ENUM(a); +#define EMe(a, b) TRACE_DEFINE_ENUM(a); + +FLUSH_ACTIONS +FI_TYPES +QGROUP_RSV_TYPES +IO_TREE_OWNER +FLUSH_STATES + +/* + * Now redefine the EM and EMe macros to map the enums to the strings that will + * be printed in the output + */ + +#undef EM +#undef EMe +#define EM(a, b) {a, b}, +#define EMe(a, b) {a, b} -#define show_qgroup_rsv_type(type) \ - __print_symbolic(type, \ - { BTRFS_QGROUP_RSV_DATA, "DATA" }, \ - { BTRFS_QGROUP_RSV_META_PERTRANS, "META_PERTRANS" }, \ - { BTRFS_QGROUP_RSV_META_PREALLOC, "META_PREALLOC" }) - -#define show_extent_io_tree_owner(owner) \ - __print_symbolic(owner, \ - { IO_TREE_FS_PINNED_EXTENTS, "PINNED_EXTENTS" }, \ - { IO_TREE_FS_EXCLUDED_EXTENTS, "EXCLUDED_EXTENTS" }, \ - { IO_TREE_INODE_IO, "INODE_IO" }, \ - { IO_TREE_INODE_IO_FAILURE, "INODE_IO_FAILURE" }, \ - { IO_TREE_RELOC_BLOCKS, "RELOC_BLOCKS" }, \ - { IO_TREE_TRANS_DIRTY_PAGES, "TRANS_DIRTY_PAGES" }, \ - { IO_TREE_ROOT_DIRTY_LOG_PAGES, "ROOT_DIRTY_LOG_PAGES" }, \ - { IO_TREE_INODE_FILE_EXTENT, "INODE_FILE_EXTENT" }, \ - { IO_TREE_LOG_CSUM_RANGE, "LOG_CSUM_RANGE" }, \ - { IO_TREE_SELFTEST, "SELFTEST" }) #define BTRFS_GROUP_FLAGS \ { BTRFS_BLOCK_GROUP_DATA, "DATA"}, \ @@ -380,7 +415,7 @@ DECLARE_EVENT_CLASS(btrfs__file_extent_item_regular, __entry->disk_isize, __entry->extent_start, __entry->extent_end, __entry->num_bytes, __entry->ram_bytes, __entry->disk_bytenr, __entry->disk_num_bytes, - __entry->extent_offset, show_fi_type(__entry->extent_type), + __entry->extent_offset, __print_symbolic(__entry->extent_type, FI_TYPES), __entry->compression) ); @@ -421,7 +456,7 @@ DECLARE_EVENT_CLASS( "extent_type=%s compression=%u", show_root_type(__entry->root_obj), __entry->ino, __entry->isize, __entry->disk_isize, __entry->extent_start, - __entry->extent_end, show_fi_type(__entry->extent_type), + __entry->extent_end, __print_symbolic(__entry->extent_type, FI_TYPES), __entry->compression) ); @@ -1042,12 +1077,6 @@ TRACE_EVENT(btrfs_space_reservation, __entry->bytes) ); -#define show_flush_action(action) \ - __print_symbolic(action, \ - { BTRFS_RESERVE_NO_FLUSH, "BTRFS_RESERVE_NO_FLUSH"}, \ - { BTRFS_RESERVE_FLUSH_LIMIT, "BTRFS_RESERVE_FLUSH_LIMIT"}, \ - { BTRFS_RESERVE_FLUSH_ALL, "BTRFS_RESERVE_FLUSH_ALL"}) - TRACE_EVENT(btrfs_trigger_flush, TP_PROTO(const struct btrfs_fs_info *fs_info, u64 flags, u64 bytes, @@ -1071,25 +1100,13 @@ TRACE_EVENT(btrfs_trigger_flush, TP_printk_btrfs("%s: flush=%d(%s) flags=%llu(%s) bytes=%llu", __get_str(reason), __entry->flush, - show_flush_action(__entry->flush), + __print_symbolic(__entry->flush, FLUSH_ACTIONS), __entry->flags, __print_flags((unsigned long)__entry->flags, "|", BTRFS_GROUP_FLAGS), __entry->bytes) ); -#define show_flush_state(state) \ - __print_symbolic(state, \ - { FLUSH_DELAYED_ITEMS_NR, "FLUSH_DELAYED_ITEMS_NR"}, \ - { FLUSH_DELAYED_ITEMS, "FLUSH_DELAYED_ITEMS"}, \ - { FLUSH_DELALLOC, "FLUSH_DELALLOC"}, \ - { FLUSH_DELALLOC_WAIT, "FLUSH_DELALLOC_WAIT"}, \ - { FLUSH_DELAYED_REFS_NR, "FLUSH_DELAYED_REFS_NR"}, \ - { FLUSH_DELAYED_REFS, "FLUSH_ELAYED_REFS"}, \ - { ALLOC_CHUNK, "ALLOC_CHUNK"}, \ - { ALLOC_CHUNK_FORCE, "ALLOC_CHUNK_FORCE"}, \ - { RUN_DELAYED_IPUTS, "RUN_DELAYED_IPUTS"}, \ - { COMMIT_TRANS, "COMMIT_TRANS"}) TRACE_EVENT(btrfs_flush_space, @@ -1114,7 +1131,7 @@ TRACE_EVENT(btrfs_flush_space, TP_printk_btrfs("state=%d(%s) flags=%llu(%s) num_bytes=%llu ret=%d", __entry->state, - show_flush_state(__entry->state), + __print_symbolic(__entry->state, FLUSH_STATES), __entry->flags, __print_flags((unsigned long)__entry->flags, "|", BTRFS_GROUP_FLAGS), @@ -1690,7 +1707,7 @@ TRACE_EVENT(qgroup_update_reserve, ), TP_printk_btrfs("qgid=%llu type=%s cur_reserved=%llu diff=%lld", - __entry->qgid, show_qgroup_rsv_type(__entry->type), + __entry->qgid, __print_symbolic(__entry->type, QGROUP_RSV_TYPES), __entry->cur_reserved, __entry->diff) ); @@ -1714,7 +1731,7 @@ TRACE_EVENT(qgroup_meta_reserve, TP_printk_btrfs("refroot=%llu(%s) type=%s diff=%lld", show_root_type(__entry->refroot), - show_qgroup_rsv_type(__entry->type), __entry->diff) + __print_symbolic(__entry->type, QGROUP_RSV_TYPES), __entry->diff) ); TRACE_EVENT(qgroup_meta_convert, @@ -1735,8 +1752,8 @@ TRACE_EVENT(qgroup_meta_convert, TP_printk_btrfs("refroot=%llu(%s) type=%s->%s diff=%lld", show_root_type(__entry->refroot), - show_qgroup_rsv_type(BTRFS_QGROUP_RSV_META_PREALLOC), - show_qgroup_rsv_type(BTRFS_QGROUP_RSV_META_PERTRANS), + __print_symbolic(BTRFS_QGROUP_RSV_META_PREALLOC, QGROUP_RSV_TYPES), + __print_symbolic(BTRFS_QGROUP_RSV_META_PERTRANS, QGROUP_RSV_TYPES), __entry->diff) ); @@ -1762,7 +1779,7 @@ TRACE_EVENT(qgroup_meta_free_all_pertrans, TP_printk_btrfs("refroot=%llu(%s) type=%s diff=%lld", show_root_type(__entry->refroot), - show_qgroup_rsv_type(__entry->type), __entry->diff) + __print_symbolic(__entry->type, QGROUP_RSV_TYPES), __entry->diff) ); DECLARE_EVENT_CLASS(btrfs__prelim_ref, @@ -1920,7 +1937,7 @@ TRACE_EVENT(btrfs_set_extent_bit, TP_printk_btrfs( "io_tree=%s ino=%llu root=%llu start=%llu len=%llu set_bits=%s", - show_extent_io_tree_owner(__entry->owner), __entry->ino, + __print_symbolic(__entry->owner, IO_TREE_OWNER), __entry->ino, __entry->rootid, __entry->start, __entry->len, __print_flags(__entry->set_bits, "|", EXTENT_FLAGS)) ); @@ -1959,7 +1976,7 @@ TRACE_EVENT(btrfs_clear_extent_bit, TP_printk_btrfs( "io_tree=%s ino=%llu root=%llu start=%llu len=%llu clear_bits=%s", - show_extent_io_tree_owner(__entry->owner), __entry->ino, + __print_symbolic(__entry->owner, IO_TREE_OWNER), __entry->ino, __entry->rootid, __entry->start, __entry->len, __print_flags(__entry->clear_bits, "|", EXTENT_FLAGS)) ); @@ -2000,7 +2017,7 @@ TRACE_EVENT(btrfs_convert_extent_bit, TP_printk_btrfs( "io_tree=%s ino=%llu root=%llu start=%llu len=%llu set_bits=%s clear_bits=%s", - show_extent_io_tree_owner(__entry->owner), __entry->ino, + __print_symbolic(__entry->owner, IO_TREE_OWNER), __entry->ino, __entry->rootid, __entry->start, __entry->len, __print_flags(__entry->set_bits , "|", EXTENT_FLAGS), __print_flags(__entry->clear_bits, "|", EXTENT_FLAGS)) diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h index f9a7811148e2..ced71237b7e4 100644 --- a/include/trace/events/rcu.h +++ b/include/trace/events/rcu.h @@ -435,11 +435,12 @@ TRACE_EVENT_RCU(rcu_fqs, #endif /* #if defined(CONFIG_TREE_RCU) */ /* - * Tracepoint for dyntick-idle entry/exit events. These take a string - * as argument: "Start" for entering dyntick-idle mode, "Startirq" for - * entering it from irq/NMI, "End" for leaving it, "Endirq" for leaving it - * to irq/NMI, "--=" for events moving towards idle, and "++=" for events - * moving away from idle. + * Tracepoint for dyntick-idle entry/exit events. These take 2 strings + * as argument: + * polarity: "Start", "End", "StillNonIdle" for entering, exiting or still not + * being in dyntick-idle mode. + * context: "USER" or "IDLE" or "IRQ". + * NMIs nested in IRQs are inferred with dynticks_nesting > 1 in IRQ context. * * These events also take a pair of numbers, which indicate the nesting * depth before and after the event of interest, and a third number that is @@ -506,13 +507,13 @@ TRACE_EVENT_RCU(rcu_callback, /* * Tracepoint for the registration of a single RCU callback of the special - * kfree() form. The first argument is the RCU type, the second argument + * kvfree() form. The first argument is the RCU type, the second argument * is a pointer to the RCU callback, the third argument is the offset * of the callback within the enclosing RCU-protected data structure, * the fourth argument is the number of lazy callbacks queued, and the * fifth argument is the total number of callbacks queued. */ -TRACE_EVENT_RCU(rcu_kfree_callback, +TRACE_EVENT_RCU(rcu_kvfree_callback, TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset, long qlen), @@ -596,12 +597,12 @@ TRACE_EVENT_RCU(rcu_invoke_callback, /* * Tracepoint for the invocation of a single RCU callback of the special - * kfree() form. The first argument is the RCU flavor, the second + * kvfree() form. The first argument is the RCU flavor, the second * argument is a pointer to the RCU callback, and the third argument * is the offset of the callback within the enclosing RCU-protected * data structure. */ -TRACE_EVENT_RCU(rcu_invoke_kfree_callback, +TRACE_EVENT_RCU(rcu_invoke_kvfree_callback, TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset), diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h index ba9efdc848f9..059b6e45a028 100644 --- a/include/trace/events/rxrpc.h +++ b/include/trace/events/rxrpc.h @@ -400,7 +400,7 @@ enum rxrpc_tx_point { EM(rxrpc_cong_begin_retransmission, " Retrans") \ EM(rxrpc_cong_cleared_nacks, " Cleared") \ EM(rxrpc_cong_new_low_nack, " NewLowN") \ - EM(rxrpc_cong_no_change, "") \ + EM(rxrpc_cong_no_change, " -") \ EM(rxrpc_cong_progress, " Progres") \ EM(rxrpc_cong_retransmit_again, " ReTxAgn") \ EM(rxrpc_cong_rtt_window_end, " RttWinE") \ diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h index ed168b0e2c53..fec25b9cfbaf 100644 --- a/include/trace/events/sched.h +++ b/include/trace/events/sched.h @@ -91,7 +91,7 @@ DEFINE_EVENT(sched_wakeup_template, sched_waking, /* * Tracepoint called when the task is actually woken; p->state == TASK_RUNNNG. - * It it not always called from the waking context. + * It is not always called from the waking context. */ DEFINE_EVENT(sched_wakeup_template, sched_wakeup, TP_PROTO(struct task_struct *p), @@ -634,6 +634,18 @@ DECLARE_TRACE(sched_overutilized_tp, TP_PROTO(struct root_domain *rd, bool overutilized), TP_ARGS(rd, overutilized)); +DECLARE_TRACE(sched_util_est_cfs_tp, + TP_PROTO(struct cfs_rq *cfs_rq), + TP_ARGS(cfs_rq)); + +DECLARE_TRACE(sched_util_est_se_tp, + TP_PROTO(struct sched_entity *se), + TP_ARGS(se)); + +DECLARE_TRACE(sched_update_nr_running_tp, + TP_PROTO(struct rq *rq, int change), + TP_ARGS(rq, change)); + #endif /* _TRACE_SCHED_H */ /* This part must be outside protection */ diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 19684813faae..8bd33050b7bb 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -3168,16 +3168,15 @@ union bpf_attr { * Return * The id is returned or 0 in case the id could not be retrieved. * - * void *bpf_ringbuf_output(void *ringbuf, void *data, u64 size, u64 flags) + * int bpf_ringbuf_output(void *ringbuf, void *data, u64 size, u64 flags) * Description * Copy *size* bytes from *data* into a ring buffer *ringbuf*. - * If BPF_RB_NO_WAKEUP is specified in *flags*, no notification of - * new data availability is sent. - * IF BPF_RB_FORCE_WAKEUP is specified in *flags*, notification of - * new data availability is sent unconditionally. + * If **BPF_RB_NO_WAKEUP** is specified in *flags*, no notification + * of new data availability is sent. + * If **BPF_RB_FORCE_WAKEUP** is specified in *flags*, notification + * of new data availability is sent unconditionally. * Return - * 0, on success; - * < 0, on error. + * 0 on success, or a negative error in case of failure. * * void *bpf_ringbuf_reserve(void *ringbuf, u64 size, u64 flags) * Description @@ -3189,20 +3188,20 @@ union bpf_attr { * void bpf_ringbuf_submit(void *data, u64 flags) * Description * Submit reserved ring buffer sample, pointed to by *data*. - * If BPF_RB_NO_WAKEUP is specified in *flags*, no notification of - * new data availability is sent. - * IF BPF_RB_FORCE_WAKEUP is specified in *flags*, notification of - * new data availability is sent unconditionally. + * If **BPF_RB_NO_WAKEUP** is specified in *flags*, no notification + * of new data availability is sent. + * If **BPF_RB_FORCE_WAKEUP** is specified in *flags*, notification + * of new data availability is sent unconditionally. * Return * Nothing. Always succeeds. * * void bpf_ringbuf_discard(void *data, u64 flags) * Description * Discard reserved ring buffer sample, pointed to by *data*. - * If BPF_RB_NO_WAKEUP is specified in *flags*, no notification of - * new data availability is sent. - * IF BPF_RB_FORCE_WAKEUP is specified in *flags*, notification of - * new data availability is sent unconditionally. + * If **BPF_RB_NO_WAKEUP** is specified in *flags*, no notification + * of new data availability is sent. + * If **BPF_RB_FORCE_WAKEUP** is specified in *flags*, notification + * of new data availability is sent unconditionally. * Return * Nothing. Always succeeds. * @@ -3210,16 +3209,18 @@ union bpf_attr { * Description * Query various characteristics of provided ring buffer. What * exactly is queries is determined by *flags*: - * - BPF_RB_AVAIL_DATA - amount of data not yet consumed; - * - BPF_RB_RING_SIZE - the size of ring buffer; - * - BPF_RB_CONS_POS - consumer position (can wrap around); - * - BPF_RB_PROD_POS - producer(s) position (can wrap around); - * Data returned is just a momentary snapshots of actual values + * + * * **BPF_RB_AVAIL_DATA**: Amount of data not yet consumed. + * * **BPF_RB_RING_SIZE**: The size of ring buffer. + * * **BPF_RB_CONS_POS**: Consumer position (can wrap around). + * * **BPF_RB_PROD_POS**: Producer(s) position (can wrap around). + * + * Data returned is just a momentary snapshot of actual values * and could be inaccurate, so this facility should be used to * power heuristics and for reporting, not to make 100% correct * calculation. * Return - * Requested value, or 0, if flags are not recognized. + * Requested value, or 0, if *flags* are not recognized. * * int bpf_csum_level(struct sk_buff *skb, u64 level) * Description diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h index e6b6cb0f8bc6..2c39d15a2beb 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -243,6 +243,18 @@ struct btrfs_ioctl_dev_info_args { __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ }; +/* + * Retrieve information about the filesystem + */ + +/* Request information about checksum type and size */ +#define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0) + +/* Request information about filesystem generation */ +#define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1) +/* Request information about filesystem metadata UUID */ +#define BTRFS_FS_INFO_FLAG_METADATA_UUID (1 << 2) + struct btrfs_ioctl_fs_info_args { __u64 max_id; /* out */ __u64 num_devices; /* out */ @@ -250,8 +262,13 @@ struct btrfs_ioctl_fs_info_args { __u32 nodesize; /* out */ __u32 sectorsize; /* out */ __u32 clone_alignment; /* out */ - __u32 reserved32; - __u64 reserved[122]; /* pad to 1k */ + /* See BTRFS_FS_INFO_FLAG_* */ + __u16 csum_type; /* out */ + __u16 csum_size; /* out */ + __u64 flags; /* in/out */ + __u64 generation; /* out */ + __u8 metadata_uuid[BTRFS_FSID_SIZE]; /* out */ + __u8 reserved[944]; /* pad to 1k */ }; /* diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h index a3f3975df0de..9ba64ca6b4ac 100644 --- a/include/uapi/linux/btrfs_tree.h +++ b/include/uapi/linux/btrfs_tree.h @@ -913,9 +913,9 @@ struct btrfs_free_space_info { #define BTRFS_FREE_SPACE_USING_BITMAPS (1ULL << 0) #define BTRFS_QGROUP_LEVEL_SHIFT 48 -static inline __u64 btrfs_qgroup_level(__u64 qgroupid) +static inline __u16 btrfs_qgroup_level(__u64 qgroupid) { - return qgroupid >> BTRFS_QGROUP_LEVEL_SHIFT; + return (__u16)(qgroupid >> BTRFS_QGROUP_LEVEL_SHIFT); } /* diff --git a/include/uapi/linux/fb.h b/include/uapi/linux/fb.h index b6aac7ee1f67..4c14e8be7267 100644 --- a/include/uapi/linux/fb.h +++ b/include/uapi/linux/fb.h @@ -205,6 +205,7 @@ struct fb_bitfield { #define FB_ACTIVATE_ALL 64 /* change all VCs on this fb */ #define FB_ACTIVATE_FORCE 128 /* force apply even when no change*/ #define FB_ACTIVATE_INV_MODE 256 /* invalidate videomode */ +#define FB_ACTIVATE_KD_TEXT 512 /* for KDSET vt ioctl */ #define FB_ACCELF_TEXT 1 /* (OBSOLETE) see fb_info.flags and vc_mode */ diff --git a/include/uapi/linux/idxd.h b/include/uapi/linux/idxd.h index 1f412fbf561b..e103c1434e4b 100644 --- a/include/uapi/linux/idxd.h +++ b/include/uapi/linux/idxd.h @@ -110,9 +110,12 @@ struct dsa_hw_desc { uint16_t rsvd1; union { uint8_t expected_res; + /* create delta record */ struct { uint64_t delta_addr; uint32_t max_delta_size; + uint32_t delt_rsvd; + uint8_t expected_res_mask; }; uint32_t delta_rec_size; uint64_t dest2; diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h index b6a835d37826..0c2e27d28e0a 100644 --- a/include/uapi/linux/input-event-codes.h +++ b/include/uapi/linux/input-event-codes.h @@ -888,7 +888,8 @@ #define SW_LINEIN_INSERT 0x0d /* set = inserted */ #define SW_MUTE_DEVICE 0x0e /* set = device disabled */ #define SW_PEN_INSERTED 0x0f /* set = pen inserted */ -#define SW_MAX 0x0f +#define SW_MACHINE_COVER 0x10 /* set = cover closed */ +#define SW_MAX 0x10 #define SW_CNT (SW_MAX+1) /* diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 92c22699a5a7..d65fde732518 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -31,7 +31,8 @@ struct io_uring_sqe { union { __kernel_rwf_t rw_flags; __u32 fsync_flags; - __u16 poll_events; + __u16 poll_events; /* compatibility */ + __u32 poll32_events; /* word-reversed for BE */ __u32 sync_range_flags; __u32 msg_flags; __u32 timeout_flags; @@ -197,6 +198,7 @@ struct io_sqring_offsets { * sq_ring->flags */ #define IORING_SQ_NEED_WAKEUP (1U << 0) /* needs io_uring_enter wakeup */ +#define IORING_SQ_CQ_OVERFLOW (1U << 1) /* CQ ring is overflown */ struct io_cqring_offsets { __u32 head; @@ -248,6 +250,7 @@ struct io_uring_params { #define IORING_FEAT_RW_CUR_POS (1U << 3) #define IORING_FEAT_CUR_PERSONALITY (1U << 4) #define IORING_FEAT_FAST_POLL (1U << 5) +#define IORING_FEAT_POLL_32BITS (1U << 6) /* * io_uring_register(2) opcodes and arguments diff --git a/include/uapi/linux/isst_if.h b/include/uapi/linux/isst_if.h index 0a52b7b093d3..ba078f8e9add 100644 --- a/include/uapi/linux/isst_if.h +++ b/include/uapi/linux/isst_if.h @@ -69,7 +69,7 @@ struct isst_if_cpu_maps { * @logical_cpu: Logical CPU number to get target PCI device. * @reg: PUNIT register offset * @value: For write operation value to write and for - * for read placeholder read value + * read placeholder read value * * Structure to specify read/write data to PUNIT registers. */ diff --git a/include/uapi/linux/mrp_bridge.h b/include/uapi/linux/mrp_bridge.h index 84f15f48a7cb..bee366540212 100644 --- a/include/uapi/linux/mrp_bridge.h +++ b/include/uapi/linux/mrp_bridge.h @@ -36,7 +36,6 @@ enum br_mrp_port_state_type { enum br_mrp_port_role_type { BR_MRP_PORT_ROLE_PRIMARY, BR_MRP_PORT_ROLE_SECONDARY, - BR_MRP_PORT_ROLE_NONE, }; enum br_mrp_tlv_header_type { diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index 7b2d6fc9e6ed..077e7ee69e3d 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -383,7 +383,8 @@ struct perf_event_attr { bpf_event : 1, /* include bpf events */ aux_output : 1, /* generate AUX records instead of events */ cgroup : 1, /* include cgroup events */ - __reserved_1 : 31; + text_poke : 1, /* include text poke events */ + __reserved_1 : 30; union { __u32 wakeup_events; /* wakeup every n events */ @@ -532,9 +533,10 @@ struct perf_event_mmap_page { cap_bit0_is_deprecated : 1, /* Always 1, signals that bit 0 is zero */ cap_user_rdpmc : 1, /* The RDPMC instruction can be used to read counts */ - cap_user_time : 1, /* The time_* fields are used */ + cap_user_time : 1, /* The time_{shift,mult,offset} fields are used */ cap_user_time_zero : 1, /* The time_zero field is used */ - cap_____res : 59; + cap_user_time_short : 1, /* the time_{cycle,mask} fields are used */ + cap_____res : 58; }; }; @@ -593,13 +595,29 @@ struct perf_event_mmap_page { * ((rem * time_mult) >> time_shift); */ __u64 time_zero; + __u32 size; /* Header size up to __reserved[] fields. */ + __u32 __reserved_1; + + /* + * If cap_usr_time_short, the hardware clock is less than 64bit wide + * and we must compute the 'cyc' value, as used by cap_usr_time, as: + * + * cyc = time_cycles + ((cyc - time_cycles) & time_mask) + * + * NOTE: this form is explicitly chosen such that cap_usr_time_short + * is a correction on top of cap_usr_time, and code that doesn't + * know about cap_usr_time_short still works under the assumption + * the counter doesn't wrap. + */ + __u64 time_cycles; + __u64 time_mask; /* * Hole for extension of the self monitor capabilities */ - __u8 __reserved[118*8+4]; /* align to 1k. */ + __u8 __reserved[116*8]; /* align to 1k. */ /* * Control data for the mmap() data buffer. @@ -1024,12 +1042,35 @@ enum perf_event_type { */ PERF_RECORD_CGROUP = 19, + /* + * Records changes to kernel text i.e. self-modified code. 'old_len' is + * the number of old bytes, 'new_len' is the number of new bytes. Either + * 'old_len' or 'new_len' may be zero to indicate, for example, the + * addition or removal of a trampoline. 'bytes' contains the old bytes + * followed immediately by the new bytes. + * + * struct { + * struct perf_event_header header; + * u64 addr; + * u16 old_len; + * u16 new_len; + * u8 bytes[]; + * struct sample_id sample_id; + * }; + */ + PERF_RECORD_TEXT_POKE = 20, + PERF_RECORD_MAX, /* non-ABI */ }; enum perf_record_ksymbol_type { PERF_RECORD_KSYMBOL_TYPE_UNKNOWN = 0, PERF_RECORD_KSYMBOL_TYPE_BPF = 1, + /* + * Out of line code such as kprobe-replaced instructions or optimized + * kprobes or ftrace trampolines. + */ + PERF_RECORD_KSYMBOL_TYPE_OOL = 2, PERF_RECORD_KSYMBOL_TYPE_MAX /* non-ABI */ }; diff --git a/include/uapi/linux/rds.h b/include/uapi/linux/rds.h index cba368e55863..c21edb966c19 100644 --- a/include/uapi/linux/rds.h +++ b/include/uapi/linux/rds.h @@ -64,10 +64,12 @@ /* supported values for SO_RDS_TRANSPORT */ #define RDS_TRANS_IB 0 -#define RDS_TRANS_IWARP 1 +#define RDS_TRANS_GAP 1 #define RDS_TRANS_TCP 2 #define RDS_TRANS_COUNT 3 #define RDS_TRANS_NONE (~0) +/* don't use RDS_TRANS_IWARP - it is deprecated */ +#define RDS_TRANS_IWARP RDS_TRANS_GAP /* IOCTLS commands for SOL_RDS */ #define SIOCRDSSETTOS (SIOCPROTOPRIVATE) diff --git a/include/uapi/linux/spi/spidev.h b/include/uapi/linux/spi/spidev.h index ee0f2460bff6..d56427c0b3e0 100644 --- a/include/uapi/linux/spi/spidev.h +++ b/include/uapi/linux/spi/spidev.h @@ -48,6 +48,10 @@ #define SPI_TX_QUAD 0x200 #define SPI_RX_DUAL 0x400 #define SPI_RX_QUAD 0x800 +#define SPI_CS_WORD 0x1000 +#define SPI_TX_OCTAL 0x2000 +#define SPI_RX_OCTAL 0x4000 +#define SPI_3WIRE_HIZ 0x8000 /*---------------------------------------------------------------------------*/ diff --git a/include/uapi/linux/vboxguest.h b/include/uapi/linux/vboxguest.h index 9cec58a6a5ea..f79d7abe27db 100644 --- a/include/uapi/linux/vboxguest.h +++ b/include/uapi/linux/vboxguest.h @@ -103,7 +103,7 @@ VMMDEV_ASSERT_SIZE(vbg_ioctl_driver_version_info, 24 + 20); /* IOCTL to perform a VMM Device request larger then 1KB. */ -#define VBG_IOCTL_VMMDEV_REQUEST_BIG _IOC(_IOC_READ | _IOC_WRITE, 'V', 3, 0) +#define VBG_IOCTL_VMMDEV_REQUEST_BIG _IO('V', 3) /** VBG_IOCTL_HGCM_CONNECT data structure. */ @@ -198,7 +198,7 @@ struct vbg_ioctl_log { } u; }; -#define VBG_IOCTL_LOG(s) _IOC(_IOC_READ | _IOC_WRITE, 'V', 9, s) +#define VBG_IOCTL_LOG(s) _IO('V', 9) /** VBG_IOCTL_WAIT_FOR_EVENTS data structure. */ diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index eca6692667a3..920470502329 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -1030,7 +1030,7 @@ struct vfio_iommu_type1_info_cap_iova_range { * size in bytes that can be used by user applications when getting the dirty * bitmap. */ -#define VFIO_IOMMU_TYPE1_INFO_CAP_MIGRATION 1 +#define VFIO_IOMMU_TYPE1_INFO_CAP_MIGRATION 2 struct vfio_iommu_type1_info_cap_migration { struct vfio_info_cap_header header; diff --git a/include/vdso/datapage.h b/include/vdso/datapage.h index 7955c56d6b3c..ee810cae4e1e 100644 --- a/include/vdso/datapage.h +++ b/include/vdso/datapage.h @@ -109,6 +109,7 @@ struct vdso_data { * relocation, and this is what we need. */ extern struct vdso_data _vdso_data[CS_BASES] __attribute__((visibility("hidden"))); +extern struct vdso_data _timens_data[CS_BASES] __attribute__((visibility("hidden"))); /* * The generic vDSO implementation requires that gettimeofday.h |