diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bootmem.h | 153 | ||||
| -rw-r--r-- | include/linux/compaction.h | 16 | ||||
| -rw-r--r-- | include/linux/dma-debug.h | 6 | ||||
| -rw-r--r-- | include/linux/fsnotify_backend.h | 118 | ||||
| -rw-r--r-- | include/linux/huge_mm.h | 23 | ||||
| -rw-r--r-- | include/linux/hugetlb.h | 7 | ||||
| -rw-r--r-- | include/linux/init_task.h | 2 | ||||
| -rw-r--r-- | include/linux/ksm.h | 15 | ||||
| -rw-r--r-- | include/linux/memblock.h | 54 | ||||
| -rw-r--r-- | include/linux/mempolicy.h | 32 | ||||
| -rw-r--r-- | include/linux/migrate.h | 6 | ||||
| -rw-r--r-- | include/linux/mm.h | 70 | ||||
| -rw-r--r-- | include/linux/mman.h | 1 | ||||
| -rw-r--r-- | include/linux/mmzone.h | 11 | ||||
| -rw-r--r-- | include/linux/posix_acl.h | 78 | ||||
| -rw-r--r-- | include/linux/rmap.h | 27 | ||||
| -rw-r--r-- | include/linux/sched.h | 12 |
17 files changed, 388 insertions, 243 deletions
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index f1f07d31a3af..2fae55def608 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -5,6 +5,7 @@ #define _LINUX_BOOTMEM_H #include <linux/mmzone.h> +#include <linux/mm_types.h> #include <asm/dma.h> /* @@ -52,7 +53,6 @@ extern void free_bootmem_node(pg_data_t *pgdat, unsigned long size); extern void free_bootmem(unsigned long physaddr, unsigned long size); extern void free_bootmem_late(unsigned long physaddr, unsigned long size); -extern void __free_pages_bootmem(struct page *page, unsigned int order); /* * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE, @@ -142,6 +142,157 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, #define alloc_bootmem_low_pages_node(pgdat, x) \ __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0) + +#if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) + +/* FIXME: use MEMBLOCK_ALLOC_* variants here */ +#define BOOTMEM_ALLOC_ACCESSIBLE 0 +#define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0) + +/* FIXME: Move to memblock.h at a point where we remove nobootmem.c */ +void *memblock_virt_alloc_try_nid_nopanic(phys_addr_t size, + phys_addr_t align, phys_addr_t min_addr, + phys_addr_t max_addr, int nid); +void *memblock_virt_alloc_try_nid(phys_addr_t size, phys_addr_t align, + phys_addr_t min_addr, phys_addr_t max_addr, int nid); +void __memblock_free_early(phys_addr_t base, phys_addr_t size); +void __memblock_free_late(phys_addr_t base, phys_addr_t size); + +static inline void * __init memblock_virt_alloc( + phys_addr_t size, phys_addr_t align) +{ + return memblock_virt_alloc_try_nid(size, align, BOOTMEM_LOW_LIMIT, + BOOTMEM_ALLOC_ACCESSIBLE, + NUMA_NO_NODE); +} + +static inline void * __init memblock_virt_alloc_nopanic( + phys_addr_t size, phys_addr_t align) +{ + return memblock_virt_alloc_try_nid_nopanic(size, align, + BOOTMEM_LOW_LIMIT, + BOOTMEM_ALLOC_ACCESSIBLE, + NUMA_NO_NODE); +} + +static inline void * __init memblock_virt_alloc_from_nopanic( + phys_addr_t size, phys_addr_t align, phys_addr_t min_addr) +{ + return memblock_virt_alloc_try_nid_nopanic(size, align, min_addr, + BOOTMEM_ALLOC_ACCESSIBLE, + NUMA_NO_NODE); +} + +static inline void * __init memblock_virt_alloc_node( + phys_addr_t size, int nid) +{ + return memblock_virt_alloc_try_nid(size, 0, BOOTMEM_LOW_LIMIT, + BOOTMEM_ALLOC_ACCESSIBLE, nid); +} + +static inline void * __init memblock_virt_alloc_node_nopanic( + phys_addr_t size, int nid) +{ + return memblock_virt_alloc_try_nid_nopanic(size, 0, BOOTMEM_LOW_LIMIT, + BOOTMEM_ALLOC_ACCESSIBLE, + nid); +} + +static inline void __init memblock_free_early( + phys_addr_t base, phys_addr_t size) +{ + __memblock_free_early(base, size); +} + +static inline void __init memblock_free_early_nid( + phys_addr_t base, phys_addr_t size, int nid) +{ + __memblock_free_early(base, size); +} + +static inline void __init memblock_free_late( + phys_addr_t base, phys_addr_t size) +{ + __memblock_free_late(base, size); +} + +#else + +#define BOOTMEM_ALLOC_ACCESSIBLE 0 + + +/* Fall back to all the existing bootmem APIs */ +static inline void * __init memblock_virt_alloc( + phys_addr_t size, phys_addr_t align) +{ + if (!align) + align = SMP_CACHE_BYTES; + return __alloc_bootmem(size, align, BOOTMEM_LOW_LIMIT); +} + +static inline void * __init memblock_virt_alloc_nopanic( + phys_addr_t size, phys_addr_t align) +{ + if (!align) + align = SMP_CACHE_BYTES; + return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT); +} + +static inline void * __init memblock_virt_alloc_from_nopanic( + phys_addr_t size, phys_addr_t align, phys_addr_t min_addr) +{ + return __alloc_bootmem_nopanic(size, align, min_addr); +} + +static inline void * __init memblock_virt_alloc_node( + phys_addr_t size, int nid) +{ + return __alloc_bootmem_node(NODE_DATA(nid), size, SMP_CACHE_BYTES, + BOOTMEM_LOW_LIMIT); +} + +static inline void * __init memblock_virt_alloc_node_nopanic( + phys_addr_t size, int nid) +{ + return __alloc_bootmem_node_nopanic(NODE_DATA(nid), size, + SMP_CACHE_BYTES, + BOOTMEM_LOW_LIMIT); +} + +static inline void * __init memblock_virt_alloc_try_nid(phys_addr_t size, + phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid) +{ + return __alloc_bootmem_node_high(NODE_DATA(nid), size, align, + min_addr); +} + +static inline void * __init memblock_virt_alloc_try_nid_nopanic( + phys_addr_t size, phys_addr_t align, + phys_addr_t min_addr, phys_addr_t max_addr, int nid) +{ + return ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, align, + min_addr, max_addr); +} + +static inline void __init memblock_free_early( + phys_addr_t base, phys_addr_t size) +{ + free_bootmem(base, size); +} + +static inline void __init memblock_free_early_nid( + phys_addr_t base, phys_addr_t size, int nid) +{ + free_bootmem_node(NODE_DATA(nid), base, size); +} + +static inline void __init memblock_free_late( + phys_addr_t base, phys_addr_t size) +{ + free_bootmem_late(base, size); +} +#endif /* defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) */ + #ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP extern void *alloc_remap(int nid, unsigned long size); #else diff --git a/include/linux/compaction.h b/include/linux/compaction.h index 091d72e70d8a..7e1c76e3cd68 100644 --- a/include/linux/compaction.h +++ b/include/linux/compaction.h @@ -62,6 +62,22 @@ static inline bool compaction_deferred(struct zone *zone, int order) return zone->compact_considered < defer_limit; } +/* + * Update defer tracking counters after successful compaction of given order, + * which means an allocation either succeeded (alloc_success == true) or is + * expected to succeed. + */ +static inline void compaction_defer_reset(struct zone *zone, int order, + bool alloc_success) +{ + if (alloc_success) { + zone->compact_considered = 0; + zone->compact_defer_shift = 0; + } + if (order >= zone->compact_order_failed) + zone->compact_order_failed = order + 1; +} + /* Returns true if restarting compaction after many failures */ static inline bool compaction_restarting(struct zone *zone, int order) { diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h index fc0e34ce038f..fe8cb610deac 100644 --- a/include/linux/dma-debug.h +++ b/include/linux/dma-debug.h @@ -85,6 +85,8 @@ extern void debug_dma_sync_sg_for_device(struct device *dev, extern void debug_dma_dump_mappings(struct device *dev); +extern void debug_dma_assert_idle(struct page *page); + #else /* CONFIG_DMA_API_DEBUG */ static inline void dma_debug_add_bus(struct bus_type *bus) @@ -183,6 +185,10 @@ static inline void debug_dma_dump_mappings(struct device *dev) { } +static inline void debug_dma_assert_idle(struct page *page) +{ +} + #endif /* CONFIG_DMA_API_DEBUG */ #endif /* __DMA_DEBUG_H */ diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 4b2ee8d12f5e..7d8d5e608594 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -15,7 +15,6 @@ #include <linux/path.h> /* struct path */ #include <linux/spinlock.h> #include <linux/types.h> - #include <linux/atomic.h> /* @@ -79,6 +78,7 @@ struct fsnotify_group; struct fsnotify_event; struct fsnotify_mark; struct fsnotify_event_private_data; +struct fsnotify_fname; /* * Each group much define these ops. The fsnotify infrastructure will call @@ -94,17 +94,27 @@ struct fsnotify_event_private_data; * userspace messages that marks have been removed. */ struct fsnotify_ops { - bool (*should_send_event)(struct fsnotify_group *group, struct inode *inode, - struct fsnotify_mark *inode_mark, - struct fsnotify_mark *vfsmount_mark, - __u32 mask, void *data, int data_type); int (*handle_event)(struct fsnotify_group *group, + struct inode *inode, struct fsnotify_mark *inode_mark, struct fsnotify_mark *vfsmount_mark, - struct fsnotify_event *event); + u32 mask, void *data, int data_type, + const unsigned char *file_name); void (*free_group_priv)(struct fsnotify_group *group); void (*freeing_mark)(struct fsnotify_mark *mark, struct fsnotify_group *group); - void (*free_event_priv)(struct fsnotify_event_private_data *priv); + void (*free_event)(struct fsnotify_event *event); +}; + +/* + * all of the information about the original object we want to now send to + * a group. If you want to carry more info from the accessing task to the + * listener this structure is where you need to be adding fields. + */ +struct fsnotify_event { + struct list_head list; + /* inode may ONLY be dereferenced during handle_event(). */ + struct inode *inode; /* either the inode the event happened to or its parent */ + u32 mask; /* the type of access, bitwise OR for FS_* event types */ }; /* @@ -148,7 +158,11 @@ struct fsnotify_group { * a group */ struct list_head marks_list; /* all inode marks for this group */ - struct fasync_struct *fsn_fa; /* async notification */ + struct fasync_struct *fsn_fa; /* async notification */ + + struct fsnotify_event overflow_event; /* Event we queue when the + * notification list is too + * full */ /* groups can define private fields here or use the void *private */ union { @@ -177,76 +191,10 @@ struct fsnotify_group { }; }; -/* - * A single event can be queued in multiple group->notification_lists. - * - * each group->notification_list will point to an event_holder which in turns points - * to the actual event that needs to be sent to userspace. - * - * Seemed cheaper to create a refcnt'd event and a small holder for every group - * than create a different event for every group - * - */ -struct fsnotify_event_holder { - struct fsnotify_event *event; - struct list_head event_list; -}; - -/* - * Inotify needs to tack data onto an event. This struct lets us later find the - * correct private data of the correct group. - */ -struct fsnotify_event_private_data { - struct fsnotify_group *group; - struct list_head event_list; -}; - -/* - * all of the information about the original object we want to now send to - * a group. If you want to carry more info from the accessing task to the - * listener this structure is where you need to be adding fields. - */ -struct fsnotify_event { - /* - * If we create an event we are also likely going to need a holder - * to link to a group. So embed one holder in the event. Means only - * one allocation for the common case where we only have one group - */ - struct fsnotify_event_holder holder; - spinlock_t lock; /* protection for the associated event_holder and private_list */ - /* to_tell may ONLY be dereferenced during handle_event(). */ - struct inode *to_tell; /* either the inode the event happened to or its parent */ - /* - * depending on the event type we should have either a path or inode - * We hold a reference on path, but NOT on inode. Since we have the ref on - * the path, it may be dereferenced at any point during this object's - * lifetime. That reference is dropped when this object's refcnt hits - * 0. If this event contains an inode instead of a path, the inode may - * ONLY be used during handle_event(). - */ - union { - struct path path; - struct inode *inode; - }; /* when calling fsnotify tell it if the data is a path or inode */ #define FSNOTIFY_EVENT_NONE 0 #define FSNOTIFY_EVENT_PATH 1 #define FSNOTIFY_EVENT_INODE 2 - int data_type; /* which of the above union we have */ - atomic_t refcnt; /* how many groups still are using/need to send this event */ - __u32 mask; /* the type of access, bitwise OR for FS_* event types */ - - u32 sync_cookie; /* used to corrolate events, namely inotify mv events */ - const unsigned char *file_name; - size_t name_len; - struct pid *tgid; - -#ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS - __u32 response; /* userspace answer to question */ -#endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */ - - struct list_head private_data_list; /* groups can store private data here */ -}; /* * Inode specific fields in an fsnotify_mark @@ -370,17 +318,12 @@ extern void fsnotify_put_group(struct fsnotify_group *group); extern void fsnotify_destroy_group(struct fsnotify_group *group); /* fasync handler function */ extern int fsnotify_fasync(int fd, struct file *file, int on); -/* take a reference to an event */ -extern void fsnotify_get_event(struct fsnotify_event *event); -extern void fsnotify_put_event(struct fsnotify_event *event); -/* find private data previously attached to an event and unlink it */ -extern struct fsnotify_event_private_data *fsnotify_remove_priv_from_event(struct fsnotify_group *group, - struct fsnotify_event *event); - +/* Free event from memory */ +extern void fsnotify_destroy_event(struct fsnotify_group *group, + struct fsnotify_event *event); /* attach the event to the group notification queue */ extern struct fsnotify_event *fsnotify_add_notify_event(struct fsnotify_group *group, struct fsnotify_event *event, - struct fsnotify_event_private_data *priv, struct fsnotify_event *(*merge)(struct list_head *, struct fsnotify_event *)); /* true if the group notification queue is empty */ @@ -430,15 +373,8 @@ extern void fsnotify_put_mark(struct fsnotify_mark *mark); extern void fsnotify_unmount_inodes(struct list_head *list); /* put here because inotify does some weird stuff when destroying watches */ -extern struct fsnotify_event *fsnotify_create_event(struct inode *to_tell, __u32 mask, - void *data, int data_is, - const unsigned char *name, - u32 cookie, gfp_t gfp); - -/* fanotify likes to change events after they are on lists... */ -extern struct fsnotify_event *fsnotify_clone_event(struct fsnotify_event *old_event); -extern int fsnotify_replace_event(struct fsnotify_event_holder *old_holder, - struct fsnotify_event *new_event); +extern void fsnotify_init_event(struct fsnotify_event *event, + struct inode *to_tell, u32 mask); #else diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 91672e2deec3..db512014e061 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -157,6 +157,26 @@ static inline int hpage_nr_pages(struct page *page) return HPAGE_PMD_NR; return 1; } +/* + * compound_trans_head() should be used instead of compound_head(), + * whenever the "page" passed as parameter could be the tail of a + * transparent hugepage that could be undergoing a + * __split_huge_page_refcount(). The page structure layout often + * changes across releases and it makes extensive use of unions. So if + * the page structure layout will change in a way that + * page->first_page gets clobbered by __split_huge_page_refcount, the + * implementation making use of smp_rmb() will be required. + * + * Currently we define compound_trans_head as compound_head, because + * page->private is in the same union with page->first_page, and + * page->private isn't clobbered. However this also means we're + * currently leaving dirt into the page->private field of anonymous + * pages resulting from a THP split, instead of setting page->private + * to zero like for every other page that has PG_private not set. But + * anonymous pages don't use page->private so this is not a problem. + */ +#if 0 +/* This will be needed if page->private will be clobbered in split_huge_page */ static inline struct page *compound_trans_head(struct page *page) { if (PageTail(page)) { @@ -174,6 +194,9 @@ static inline struct page *compound_trans_head(struct page *page) } return page; } +#else +#define compound_trans_head(page) compound_head(page) +#endif extern int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma, unsigned long addr, pmd_t pmd, pmd_t *pmdp); diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index bd7e98752222..d01cc972a1d9 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -31,7 +31,6 @@ struct hugepage_subpool *hugepage_new_subpool(long nr_blocks); void hugepage_put_subpool(struct hugepage_subpool *spool); int PageHuge(struct page *page); -int PageHeadHuge(struct page *page_head); void reset_vma_resv_huge_pages(struct vm_area_struct *vma); int hugetlb_sysctl_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); @@ -104,11 +103,6 @@ static inline int PageHuge(struct page *page) return 0; } -static inline int PageHeadHuge(struct page *page_head) -{ - return 0; -} - static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma) { } @@ -360,6 +354,7 @@ static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, static inline struct hstate *page_hstate(struct page *page) { + VM_BUG_ON(!PageHuge(page)); return size_to_hstate(PAGE_SIZE << compound_order(page)); } diff --git a/include/linux/init_task.h b/include/linux/init_task.h index f0e52383a001..1516a8ff8f92 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -41,6 +41,7 @@ extern struct fs_struct init_fs; #define INIT_SIGNALS(sig) { \ .nr_threads = 1, \ + .thread_head = LIST_HEAD_INIT(init_task.thread_node), \ .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ .shared_pending = { \ .list = LIST_HEAD_INIT(sig.shared_pending.list), \ @@ -222,6 +223,7 @@ extern struct task_group root_task_group; [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ }, \ .thread_group = LIST_HEAD_INIT(tsk.thread_group), \ + .thread_node = LIST_HEAD_INIT(init_signals.thread_head), \ INIT_IDS \ INIT_PERF_EVENTS(tsk) \ INIT_TRACE_IRQFLAGS \ diff --git a/include/linux/ksm.h b/include/linux/ksm.h index 45c9b6a17bcb..3be6bb18562d 100644 --- a/include/linux/ksm.h +++ b/include/linux/ksm.h @@ -73,11 +73,7 @@ static inline void set_page_stable_node(struct page *page, struct page *ksm_might_need_to_copy(struct page *page, struct vm_area_struct *vma, unsigned long address); -int page_referenced_ksm(struct page *page, - struct mem_cgroup *memcg, unsigned long *vm_flags); -int try_to_unmap_ksm(struct page *page, enum ttu_flags flags); -int rmap_walk_ksm(struct page *page, int (*rmap_one)(struct page *, - struct vm_area_struct *, unsigned long, void *), void *arg); +int rmap_walk_ksm(struct page *page, struct rmap_walk_control *rwc); void ksm_migrate_page(struct page *newpage, struct page *oldpage); #else /* !CONFIG_KSM */ @@ -115,13 +111,8 @@ static inline int page_referenced_ksm(struct page *page, return 0; } -static inline int try_to_unmap_ksm(struct page *page, enum ttu_flags flags) -{ - return 0; -} - -static inline int rmap_walk_ksm(struct page *page, int (*rmap_one)(struct page*, - struct vm_area_struct *, unsigned long, void *), void *arg) +static inline int rmap_walk_ksm(struct page *page, + struct rmap_walk_control *rwc) { return 0; } diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 77c60e52939d..cd0274bebd4c 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -19,9 +19,13 @@ #define INIT_MEMBLOCK_REGIONS 128 +/* Definition of memblock flags. */ +#define MEMBLOCK_HOTPLUG 0x1 /* hotpluggable region */ + struct memblock_region { phys_addr_t base; phys_addr_t size; + unsigned long flags; #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP int nid; #endif @@ -43,12 +47,17 @@ struct memblock { extern struct memblock memblock; extern int memblock_debug; +#ifdef CONFIG_MOVABLE_NODE +/* If movable_node boot option specified */ +extern bool movable_node_enabled; +#endif /* CONFIG_MOVABLE_NODE */ #define memblock_dbg(fmt, ...) \ if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) -phys_addr_t memblock_find_in_range_node(phys_addr_t start, phys_addr_t end, - phys_addr_t size, phys_addr_t align, int nid); +phys_addr_t memblock_find_in_range_node(phys_addr_t size, phys_addr_t align, + phys_addr_t start, phys_addr_t end, + int nid); phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end, phys_addr_t size, phys_addr_t align); phys_addr_t get_allocated_memblock_reserved_regions_info(phys_addr_t *addr); @@ -59,6 +68,28 @@ int memblock_remove(phys_addr_t base, phys_addr_t size); int memblock_free(phys_addr_t base, phys_addr_t size); int memblock_reserve(phys_addr_t base, phys_addr_t size); void memblock_trim_memory(phys_addr_t align); +int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size); +int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size); +#ifdef CONFIG_MOVABLE_NODE +static inline bool memblock_is_hotpluggable(struct memblock_region *m) +{ + return m->flags & MEMBLOCK_HOTPLUG; +} + +static inline bool movable_node_is_enabled(void) +{ + return movable_node_enabled; +} +#else +static inline bool memblock_is_hotpluggable(struct memblock_region *m) +{ + return false; +} +static inline bool movable_node_is_enabled(void) +{ + return false; +} +#endif #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn, @@ -87,7 +118,7 @@ void __next_free_mem_range(u64 *idx, int nid, phys_addr_t *out_start, /** * for_each_free_mem_range - iterate through free memblock areas * @i: u64 used as loop variable - * @nid: node selector, %MAX_NUMNODES for all nodes + * @nid: node selector, %NUMA_NO_NODE for all nodes * @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 * @p_nid: ptr to int for nid of the range, can be %NULL @@ -107,7 +138,7 @@ void __next_free_mem_range_rev(u64 *idx, int nid, phys_addr_t *out_start, /** * for_each_free_mem_range_reverse - rev-iterate through free memblock areas * @i: u64 used as loop variable - * @nid: node selector, %MAX_NUMNODES for all nodes + * @nid: node selector, %NUMA_NO_NODE for all nodes * @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 * @p_nid: ptr to int for nid of the range, can be %NULL @@ -121,8 +152,21 @@ void __next_free_mem_range_rev(u64 *idx, int nid, phys_addr_t *out_start, i != (u64)ULLONG_MAX; \ __next_free_mem_range_rev(&i, nid, p_start, p_end, p_nid)) +static inline void memblock_set_region_flags(struct memblock_region *r, + unsigned long flags) +{ + r->flags |= flags; +} + +static inline void memblock_clear_region_flags(struct memblock_region *r, + unsigned long flags) +{ + r->flags &= ~flags; +} + #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP -int memblock_set_node(phys_addr_t base, phys_addr_t size, int nid); +int memblock_set_node(phys_addr_t base, phys_addr_t size, + struct memblock_type *type, int nid); static inline void memblock_set_region_node(struct memblock_region *r, int nid) { diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h index 9fe426b30a41..5f1ea756aace 100644 --- a/include/linux/mempolicy.h +++ b/include/linux/mempolicy.h @@ -211,20 +211,8 @@ static inline void mpol_get(struct mempolicy *pol) { } -static inline struct mempolicy *mpol_dup(struct mempolicy *old) -{ - return NULL; -} - struct shared_policy {}; -static inline int mpol_set_shared_policy(struct shared_policy *info, - struct vm_area_struct *vma, - struct mempolicy *new) -{ - return -EINVAL; -} - static inline void mpol_shared_policy_init(struct shared_policy *sp, struct mempolicy *mpol) { @@ -234,12 +222,6 @@ static inline void mpol_free_shared_policy(struct shared_policy *p) { } -static inline struct mempolicy * -mpol_shared_policy_lookup(struct shared_policy *sp, unsigned long idx) -{ - return NULL; -} - #define vma_policy(vma) NULL static inline int @@ -266,10 +248,6 @@ static inline void mpol_rebind_mm(struct mm_struct *mm, nodemask_t *new) { } -static inline void mpol_fix_fork_child_flag(struct task_struct *p) -{ -} - static inline struct zonelist *huge_zonelist(struct vm_area_struct *vma, unsigned long addr, gfp_t gfp_flags, struct mempolicy **mpol, nodemask_t **nodemask) @@ -284,12 +262,6 @@ static inline bool init_nodemask_of_mempolicy(nodemask_t *m) return false; } -static inline bool mempolicy_nodemask_intersects(struct task_struct *tsk, - const nodemask_t *mask) -{ - return false; -} - static inline int do_migrate_pages(struct mm_struct *mm, const nodemask_t *from, const nodemask_t *to, int flags) { @@ -307,10 +279,6 @@ static inline int mpol_parse_str(char *str, struct mempolicy **mpol) } #endif -static inline void mpol_to_str(char *buffer, int maxlen, struct mempolicy *pol) -{ -} - static inline int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long address) { diff --git a/include/linux/migrate.h b/include/linux/migrate.h index f015c059e159..84a31ad0b791 100644 --- a/include/linux/migrate.h +++ b/include/linux/migrate.h @@ -35,16 +35,12 @@ enum migrate_reason { #ifdef CONFIG_MIGRATION -extern void putback_lru_pages(struct list_head *l); extern void putback_movable_pages(struct list_head *l); extern int migrate_page(struct address_space *, struct page *, struct page *, enum migrate_mode); extern int migrate_pages(struct list_head *l, new_page_t x, unsigned long private, enum migrate_mode mode, int reason); -extern int fail_migrate_page(struct address_space *, - struct page *, struct page *); - extern int migrate_prep(void); extern int migrate_prep_local(void); extern int migrate_vmas(struct mm_struct *mm, @@ -59,7 +55,6 @@ extern int migrate_page_move_mapping(struct address_space *mapping, int extra_count); #else -static inline void putback_lru_pages(struct list_head *l) {} static inline void putback_movable_pages(struct list_head *l) {} static inline int migrate_pages(struct list_head *l, new_page_t x, unsigned long private, enum migrate_mode mode, int reason) @@ -86,7 +81,6 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping, /* Possible settings for the migrate_page() method in address_operations */ #define migrate_page NULL -#define fail_migrate_page NULL #endif /* CONFIG_MIGRATION */ diff --git a/include/linux/mm.h b/include/linux/mm.h index 35527173cf50..a512dd836931 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -57,6 +57,15 @@ extern int sysctl_legacy_va_layout; extern unsigned long sysctl_user_reserve_kbytes; extern unsigned long sysctl_admin_reserve_kbytes; +extern int sysctl_overcommit_memory; +extern int sysctl_overcommit_ratio; +extern unsigned long sysctl_overcommit_kbytes; + +extern int overcommit_ratio_handler(struct ctl_table *, int, void __user *, + size_t *, loff_t *); +extern int overcommit_kbytes_handler(struct ctl_table *, int, void __user *, + size_t *, loff_t *); + #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n)) /* to align the pointer to the (next) page boundary */ @@ -414,15 +423,44 @@ static inline int page_count(struct page *page) return atomic_read(&compound_head(page)->_count); } +#ifdef CONFIG_HUGETLB_PAGE +extern int PageHeadHuge(struct page *page_head); +#else /* CONFIG_HUGETLB_PAGE */ +static inline int PageHeadHuge(struct page *page_head) +{ + return 0; +} +#endif /* CONFIG_HUGETLB_PAGE */ + +static inline bool __compound_tail_refcounted(struct page *page) +{ + return !PageSlab(page) && !PageHeadHuge(page); +} + +/* + * This takes a head page as parameter and tells if the + * tail page reference counting can be skipped. + * + * For this to be safe, PageSlab and PageHeadHuge must remain true on + * any given page where they return true here, until all tail pins + * have been released. + */ +static inline bool compound_tail_refcounted(struct page *page) +{ + VM_BUG_ON(!PageHead(page)); + return __compound_tail_refcounted(page); +} + static inline void get_huge_page_tail(struct page *page) { /* - * __split_huge_page_refcount() cannot run - * from under us. + * __split_huge_page_refcount() cannot run from under us. */ + VM_BUG_ON(!PageTail(page)); VM_BUG_ON(page_mapcount(page) < 0); VM_BUG_ON(atomic_read(&page->_count) != 0); - atomic_inc(&page->_mapcount); + if (compound_tail_refcounted(page->first_page)) + atomic_inc(&page->_mapcount); } extern bool __get_page_tail(struct page *page); @@ -846,11 +884,14 @@ static __always_inline void *lowmem_page_address(const struct page *page) #endif #if defined(WANT_PAGE_VIRTUAL) -#define page_address(page) ((page)->virtual) -#define set_page_address(page, address) \ - do { \ - (page)->virtual = (address); \ - } while(0) +static inline void *page_address(const struct page *page) +{ + return page->virtual; +} +static inline void set_page_address(struct page *page, void *address) +{ + page->virtual = address; +} #define page_address_init() do { } while(0) #endif @@ -984,7 +1025,6 @@ extern void pagefault_out_of_memory(void); * various contexts. */ #define SHOW_MEM_FILTER_NODES (0x0001u) /* disallowed nodes */ -#define SHOW_MEM_FILTER_PAGE_COUNT (0x0002u) /* page type count */ extern void show_free_areas(unsigned int flags); extern bool skip_free_areas_node(unsigned int flags, int nid); @@ -1318,6 +1358,7 @@ static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long a #if USE_SPLIT_PTE_PTLOCKS #if ALLOC_SPLIT_PTLOCKS +void __init ptlock_cache_init(void); extern bool ptlock_alloc(struct page *page); extern void ptlock_free(struct page *page); @@ -1326,6 +1367,10 @@ static inline spinlock_t *ptlock_ptr(struct page *page) return page->ptl; } #else /* ALLOC_SPLIT_PTLOCKS */ +static inline void ptlock_cache_init(void) +{ +} + static inline bool ptlock_alloc(struct page *page) { return true; @@ -1378,10 +1423,17 @@ static inline spinlock_t *pte_lockptr(struct mm_struct *mm, pmd_t *pmd) { return &mm->page_table_lock; } +static inline void ptlock_cache_init(void) {} static inline bool ptlock_init(struct page *page) { return true; } static inline void pte_lock_deinit(struct page *page) {} #endif /* USE_SPLIT_PTE_PTLOCKS */ +static inline void pgtable_init(void) +{ + ptlock_cache_init(); + pgtable_cache_init(); +} + static inline bool pgtable_page_ctor(struct page *page) { inc_zone_page_state(page, NR_PAGETABLE); diff --git a/include/linux/mman.h b/include/linux/mman.h index 7f7f8dae4b1d..16373c8f5f57 100644 --- a/include/linux/mman.h +++ b/include/linux/mman.h @@ -9,6 +9,7 @@ extern int sysctl_overcommit_memory; extern int sysctl_overcommit_ratio; +extern unsigned long sysctl_overcommit_kbytes; extern struct percpu_counter vm_committed_as; #ifdef CONFIG_SMP diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index bd791e452ad7..5f2052c83154 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -490,6 +490,12 @@ struct zone { unsigned long managed_pages; /* + * Number of MIGRATE_RESEVE page block. To maintain for just + * optimization. Protected by zone->lock. + */ + int nr_migrate_reserve_block; + + /* * rarely used fields: */ const char *name; @@ -758,10 +764,7 @@ typedef struct pglist_data { int kswapd_max_order; enum zone_type classzone_idx; #ifdef CONFIG_NUMA_BALANCING - /* - * Lock serializing the per destination node AutoNUMA memory - * migration rate limiting data. - */ + /* Lock serializing the migrate rate limiting window */ spinlock_t numabalancing_migrate_lock; /* Rate limiting time interval */ diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h index 7931efe71175..fb616942e4c7 100644 --- a/include/linux/posix_acl.h +++ b/include/linux/posix_acl.h @@ -94,78 +94,12 @@ extern int posix_acl_chmod(struct posix_acl **, gfp_t, umode_t); extern struct posix_acl *get_posix_acl(struct inode *, int); extern int set_posix_acl(struct inode *, int, struct posix_acl *); -#ifdef CONFIG_FS_POSIX_ACL -static inline struct posix_acl **acl_by_type(struct inode *inode, int type) -{ - switch (type) { - case ACL_TYPE_ACCESS: - return &inode->i_acl; - case ACL_TYPE_DEFAULT: - return &inode->i_default_acl; - default: - BUG(); - } -} - -static inline struct posix_acl *get_cached_acl(struct inode *inode, int type) -{ - struct posix_acl **p = acl_by_type(inode, type); - struct posix_acl *acl = ACCESS_ONCE(*p); - if (acl) { - spin_lock(&inode->i_lock); - acl = *p; - if (acl != ACL_NOT_CACHED) - acl = posix_acl_dup(acl); - spin_unlock(&inode->i_lock); - } - return acl; -} - -static inline struct posix_acl *get_cached_acl_rcu(struct inode *inode, int type) -{ - return rcu_dereference(*acl_by_type(inode, type)); -} - -static inline void set_cached_acl(struct inode *inode, - int type, - struct posix_acl *acl) -{ - struct posix_acl **p = acl_by_type(inode, type); - struct posix_acl *old; - spin_lock(&inode->i_lock); - old = *p; - rcu_assign_pointer(*p, posix_acl_dup(acl)); - spin_unlock(&inode->i_lock); - if (old != ACL_NOT_CACHED) - posix_acl_release(old); -} - -static inline void forget_cached_acl(struct inode *inode, int type) -{ - struct posix_acl **p = acl_by_type(inode, type); - struct posix_acl *old; - spin_lock(&inode->i_lock); - old = *p; - *p = ACL_NOT_CACHED; - spin_unlock(&inode->i_lock); - if (old != ACL_NOT_CACHED) - posix_acl_release(old); -} - -static inline void forget_all_cached_acls(struct inode *inode) -{ - struct posix_acl *old_access, *old_default; - spin_lock(&inode->i_lock); - old_access = inode->i_acl; - old_default = inode->i_default_acl; - inode->i_acl = inode->i_default_acl = ACL_NOT_CACHED; - spin_unlock(&inode->i_lock); - if (old_access != ACL_NOT_CACHED) - posix_acl_release(old_access); - if (old_default != ACL_NOT_CACHED) - posix_acl_release(old_default); -} -#endif +struct posix_acl **acl_by_type(struct inode *inode, int type); +struct posix_acl *get_cached_acl(struct inode *inode, int type); +struct posix_acl *get_cached_acl_rcu(struct inode *inode, int type); +void set_cached_acl(struct inode *inode, int type, struct posix_acl *acl); +void forget_cached_acl(struct inode *inode, int type); +void forget_all_cached_acls(struct inode *inode); static inline void cache_no_acl(struct inode *inode) { diff --git a/include/linux/rmap.h b/include/linux/rmap.h index 6dacb93a6d94..1da693d51255 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -184,13 +184,13 @@ static inline void page_dup_rmap(struct page *page) int page_referenced(struct page *, int is_locked, struct mem_cgroup *memcg, unsigned long *vm_flags); int page_referenced_one(struct page *, struct vm_area_struct *, - unsigned long address, unsigned int *mapcount, unsigned long *vm_flags); + unsigned long address, void *arg); #define TTU_ACTION(x) ((x) & TTU_ACTION_MASK) int try_to_unmap(struct page *, enum ttu_flags flags); int try_to_unmap_one(struct page *, struct vm_area_struct *, - unsigned long address, enum ttu_flags flags); + unsigned long address, void *arg); /* * Called from mm/filemap_xip.c to unmap empty zero page @@ -236,10 +236,27 @@ void page_unlock_anon_vma_read(struct anon_vma *anon_vma); int page_mapped_in_vma(struct page *page, struct vm_area_struct *vma); /* - * Called by migrate.c to remove migration ptes, but might be used more later. + * rmap_walk_control: To control rmap traversing for specific needs + * + * arg: passed to rmap_one() and invalid_vma() + * rmap_one: executed on each vma where page is mapped + * done: for checking traversing termination condition + * file_nonlinear: for handling file nonlinear mapping + * anon_lock: for getting anon_lock by optimized way rather than default + * invalid_vma: for skipping uninterested vma */ -int rmap_walk(struct page *page, int (*rmap_one)(struct page *, - struct vm_area_struct *, unsigned long, void *), void *arg); +struct rmap_walk_control { + void *arg; + int (*rmap_one)(struct page *page, struct vm_area_struct *vma, + unsigned long addr, void *arg); + int (*done)(struct page *page); + int (*file_nonlinear)(struct page *, struct address_space *, + struct vm_area_struct *vma); + struct anon_vma *(*anon_lock)(struct page *page); + bool (*invalid_vma)(struct vm_area_struct *vma, void *arg); +}; + +int rmap_walk(struct page *page, struct rmap_walk_control *rwc); #else /* !CONFIG_MMU */ diff --git a/include/linux/sched.h b/include/linux/sched.h index ffccdad050b5..485234d2fd42 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -549,6 +549,7 @@ struct signal_struct { atomic_t sigcnt; atomic_t live; int nr_threads; + struct list_head thread_head; wait_queue_head_t wait_chldexit; /* for wait4() */ @@ -1271,6 +1272,7 @@ struct task_struct { /* PID/PID hash table linkage. */ struct pid_link pids[PIDTYPE_MAX]; struct list_head thread_group; + struct list_head thread_node; struct completion *vfork_done; /* for vfork() */ int __user *set_child_tid; /* CLONE_CHILD_SETTID */ @@ -2341,6 +2343,16 @@ extern bool current_is_single_threaded(void); #define while_each_thread(g, t) \ while ((t = next_thread(t)) != g) +#define __for_each_thread(signal, t) \ + list_for_each_entry_rcu(t, &(signal)->thread_head, thread_node) + +#define for_each_thread(p, t) \ + __for_each_thread((p)->signal, t) + +/* Careful: this is a double loop, 'break' won't work as expected. */ +#define for_each_process_thread(p, t) \ + for_each_process(p) for_each_thread(p, t) + static inline int get_nr_threads(struct task_struct *tsk) { return tsk->signal->nr_threads; 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