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| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-01-14 23:35:32 +0100 |
|---|---|---|
| committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2008-07-02 11:01:29 +0200 |
| commit | 38510754a50192a072210e24fdc4ae65592182f0 (patch) | |
| tree | f14de78921e4e6a5f56aee93d5ba921c57c2a82f /include/asm-avr32 | |
| parent | 5a4d5292779b6163aa41e594a56307e442fbe73c (diff) | |
| download | lwn-38510754a50192a072210e24fdc4ae65592182f0.tar.gz lwn-38510754a50192a072210e24fdc4ae65592182f0.zip | |
avr32: Use a quicklist for PTE allocation as well
Using a quicklist to allocate PTEs might be slightly faster than using
the page allocator directly since we might avoid zeroing the page
after each allocation.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Diffstat (limited to 'include/asm-avr32')
| -rw-r--r-- | include/asm-avr32/pgalloc.h | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/include/asm-avr32/pgalloc.h b/include/asm-avr32/pgalloc.h index a291f59659cf..640821323943 100644 --- a/include/asm-avr32/pgalloc.h +++ b/include/asm-avr32/pgalloc.h @@ -13,6 +13,7 @@ #include <asm/pgtable.h> #define QUICK_PGD 0 /* Preserve kernel mappings over free */ +#define QUICK_PT 1 /* Zero on free */ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) @@ -52,34 +53,34 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) { - pte_t *pte; - - pte = (pte_t *)get_zeroed_page(GFP_KERNEL | __GFP_REPEAT); - - return pte; + return quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL); } -static inline struct page *pte_alloc_one(struct mm_struct *mm, +static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address) { - struct page *pte; + struct page *page; + void *pg; - pte = alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO); - if (!pte) + pg = quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL); + if (!pg) return NULL; - pgtable_page_ctor(pte); - return pte; + + page = virt_to_page(pg); + pgtable_page_ctor(page); + + return page; } static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) { - free_page((unsigned long)pte); + quicklist_free(QUICK_PT, NULL, pte); } static inline void pte_free(struct mm_struct *mm, pgtable_t pte) { pgtable_page_dtor(pte); - __free_page(pte); + quicklist_free_page(QUICK_PT, NULL, pte); } #define __pte_free_tlb(tlb,pte) \ @@ -91,6 +92,7 @@ do { \ static inline void check_pgt_cache(void) { quicklist_trim(QUICK_PGD, NULL, 25, 16); + quicklist_trim(QUICK_PT, NULL, 25, 16); } #endif /* __ASM_AVR32_PGALLOC_H */ |