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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-03-17 16:37:00 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-24 23:57:31 +0200 |
| commit | 394158559d4c912cc58c311b6346cdea0ed2b1de (patch) | |
| tree | c4cdc93d77d964577af8b42a5c9b37916735bf47 /arch | |
| parent | 5a5f8f42241cf09caec5530a7639cfa8dccc3a7b (diff) | |
| download | linux-stable-394158559d4c912cc58c311b6346cdea0ed2b1de.tar.gz linux-stable-394158559d4c912cc58c311b6346cdea0ed2b1de.tar.bz2 linux-stable-394158559d4c912cc58c311b6346cdea0ed2b1de.zip | |
x86: move all the pgd_list handling to one place
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/pgtable.c | 28 |
1 files changed, 7 insertions, 21 deletions
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index c67966e10a95..0d2866b8f425 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -43,34 +43,31 @@ void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud) #endif /* PAGETABLE_LEVELS > 3 */ #endif /* PAGETABLE_LEVELS > 2 */ -#ifdef CONFIG_X86_64 static inline void pgd_list_add(pgd_t *pgd) { struct page *page = virt_to_page(pgd); - unsigned long flags; - spin_lock_irqsave(&pgd_lock, flags); list_add(&page->lru, &pgd_list); - spin_unlock_irqrestore(&pgd_lock, flags); } static inline void pgd_list_del(pgd_t *pgd) { struct page *page = virt_to_page(pgd); - unsigned long flags; - spin_lock_irqsave(&pgd_lock, flags); list_del(&page->lru); - spin_unlock_irqrestore(&pgd_lock, flags); } +#ifdef CONFIG_X86_64 pgd_t *pgd_alloc(struct mm_struct *mm) { unsigned boundary; pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT); + unsigned long flags; if (!pgd) return NULL; + spin_lock_irqsave(&pgd_lock, flags); pgd_list_add(pgd); + spin_unlock_irqrestore(&pgd_lock, flags); /* * Copy kernel pointers in from init. * Could keep a freelist or slab cache of those because the kernel @@ -86,8 +83,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm) void pgd_free(struct mm_struct *mm, pgd_t *pgd) { + unsigned long flags; BUG_ON((unsigned long)pgd & (PAGE_SIZE-1)); + spin_lock_irqsave(&pgd_lock, flags); pgd_list_del(pgd); + spin_unlock_irqrestore(&pgd_lock, flags); free_page((unsigned long)pgd); } #else @@ -101,20 +101,6 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd) * vmalloc faults work because attached pagetables are never freed. * -- wli */ -static inline void pgd_list_add(pgd_t *pgd) -{ - struct page *page = virt_to_page(pgd); - - list_add(&page->lru, &pgd_list); -} - -static inline void pgd_list_del(pgd_t *pgd) -{ - struct page *page = virt_to_page(pgd); - - list_del(&page->lru); -} - #define UNSHARED_PTRS_PER_PGD \ (SHARED_KERNEL_PMD ? USER_PTRS_PER_PGD : PTRS_PER_PGD) |