diff options
Diffstat (limited to 'arch/nds32/mm')
| -rw-r--r-- | arch/nds32/mm/fault.c | 17 | ||||
| -rw-r--r-- | arch/nds32/mm/init.c | 13 | ||||
| -rw-r--r-- | arch/nds32/mm/proc.c | 7 |
3 files changed, 11 insertions, 26 deletions
diff --git a/arch/nds32/mm/fault.c b/arch/nds32/mm/fault.c index f331e533edc2..8fb73f6401a0 100644 --- a/arch/nds32/mm/fault.c +++ b/arch/nds32/mm/fault.c @@ -11,7 +11,6 @@ #include <linux/uaccess.h> #include <linux/perf_event.h> -#include <asm/pgtable.h> #include <asm/tlbflush.h> extern void die(const char *str, struct pt_regs *regs, long err); @@ -127,12 +126,12 @@ void do_page_fault(unsigned long entry, unsigned long addr, * validly references user space from well defined areas of the code, * we can bug out early if this is from code which shouldn't. */ - if (unlikely(!down_read_trylock(&mm->mmap_sem))) { + if (unlikely(!mmap_read_trylock(mm))) { if (!user_mode(regs) && !search_exception_tables(instruction_pointer(regs))) goto no_context; retry: - down_read(&mm->mmap_sem); + mmap_read_lock(mm); } else { /* * The above down_read_trylock() might have succeeded in which @@ -211,7 +210,7 @@ good_area: /* * If we need to retry but a fatal signal is pending, handle the - * signal first. We do not need to release the mmap_sem because it + * signal first. We do not need to release the mmap_lock because it * would already be released in __lock_page_or_retry in mm/filemap.c. */ if (fault_signal_pending(fault, regs)) { @@ -248,7 +247,7 @@ good_area: if (fault & VM_FAULT_RETRY) { flags |= FAULT_FLAG_TRIED; - /* No need to up_read(&mm->mmap_sem) as we would + /* No need to mmap_read_unlock(mm) as we would * have already released it in __lock_page_or_retry * in mm/filemap.c. */ @@ -256,7 +255,7 @@ good_area: } } - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); return; /* @@ -264,7 +263,7 @@ good_area: * Fix it, but check if it's kernel or user first.. */ bad_area: - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); bad_area_nosemaphore: @@ -324,14 +323,14 @@ no_context: */ out_of_memory: - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); if (!user_mode(regs)) goto no_context; pagefault_out_of_memory(); return; do_sigbus: - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); /* Kernel mode? Handle exceptions or die */ if (!user_mode(regs)) diff --git a/arch/nds32/mm/init.c b/arch/nds32/mm/init.c index 91147cca4b64..fa86f7b2f416 100644 --- a/arch/nds32/mm/init.c +++ b/arch/nds32/mm/init.c @@ -98,9 +98,6 @@ static pmd_t *fixmap_pmd_p; static void __init fixedrange_init(void) { unsigned long vaddr; - pgd_t *pgd; - p4d_t *p4d; - pud_t *pud; pmd_t *pmd; #ifdef CONFIG_HIGHMEM pte_t *pte; @@ -110,10 +107,7 @@ static void __init fixedrange_init(void) * Fixed mappings: */ vaddr = __fix_to_virt(__end_of_fixed_addresses - 1); - pgd = swapper_pg_dir + pgd_index(vaddr); - p4d = p4d_offset(pgd, vaddr); - pud = pud_offset(p4d, vaddr); - pmd = pmd_offset(pud, vaddr); + pmd = pmd_off_k(vaddr); fixmap_pmd_p = memblock_alloc(PAGE_SIZE, PAGE_SIZE); if (!fixmap_pmd_p) panic("%s: Failed to allocate %lu bytes align=0x%lx\n", @@ -126,10 +120,7 @@ static void __init fixedrange_init(void) */ vaddr = PKMAP_BASE; - pgd = swapper_pg_dir + pgd_index(vaddr); - p4d = p4d_offset(pgd, vaddr); - pud = pud_offset(p4d, vaddr); - pmd = pmd_offset(pud, vaddr); + pmd = pmd_off_k(vaddr); pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE); if (!pte) panic("%s: Failed to allocate %lu bytes align=0x%lx\n", diff --git a/arch/nds32/mm/proc.c b/arch/nds32/mm/proc.c index 837ae7728830..848c845f5f33 100644 --- a/arch/nds32/mm/proc.c +++ b/arch/nds32/mm/proc.c @@ -5,7 +5,6 @@ #include <linux/sched.h> #include <linux/mm.h> #include <asm/nds32.h> -#include <asm/pgtable.h> #include <asm/tlbflush.h> #include <asm/cacheflush.h> #include <asm/l2_cache.h> @@ -16,14 +15,10 @@ extern struct cache_info L1_cache_info[2]; int va_kernel_present(unsigned long addr) { - p4d_t *p4d; - pud_t *pud; pmd_t *pmd; pte_t *ptep, pte; - p4d = p4d_offset(pgd_offset_k(addr), addr); - pud = pud_offset(p4d, addr); - pmd = pmd_offset(pud, addr); + pmd = pmd_off_k(addr); if (!pmd_none(*pmd)) { ptep = pte_offset_map(pmd, addr); pte = *ptep; |