diff options
| author | Matt Fleming <matt@console-pimps.org> | 2009-11-25 22:00:08 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-12-17 14:31:15 +0900 |
| commit | b73c806341cfc7492ede6a2ce713cb579547d0ab (patch) | |
| tree | 9318727eab90409f518c95031445063e93c0a651 /arch/sh/include/asm/pgalloc.h | |
| parent | 2f7bb2dfed3b15b388c88250b66f590aabc438da (diff) | |
sh: Abstract the number of page table levels
Keep the dimensions of the page tables in a separate header file in
preparation for allowing a three level page table structure.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include/asm/pgalloc.h')
| -rw-r--r-- | arch/sh/include/asm/pgalloc.h | 24 |
1 files changed, 3 insertions, 21 deletions
diff --git a/arch/sh/include/asm/pgalloc.h b/arch/sh/include/asm/pgalloc.h index 63ca37bd9a9..fe9f037ac5f 100644 --- a/arch/sh/include/asm/pgalloc.h +++ b/arch/sh/include/asm/pgalloc.h @@ -4,9 +4,10 @@ #include <linux/quicklist.h> #include <asm/page.h> -#define QUICK_PGD 0 /* We preserve special mappings over free */ #define QUICK_PT 1 /* Other page table pages that are zero on free */ +#include <asm/pgalloc_nopmd.h> + static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) { @@ -20,28 +21,9 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, } #define pmd_pgtable(pmd) pmd_page(pmd) -static inline void pgd_ctor(void *x) -{ - pgd_t *pgd = x; - - memcpy(pgd + USER_PTRS_PER_PGD, - swapper_pg_dir + USER_PTRS_PER_PGD, - (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t)); -} - /* * Allocate and free page tables. */ -static inline pgd_t *pgd_alloc(struct mm_struct *mm) -{ - return quicklist_alloc(QUICK_PGD, GFP_KERNEL | __GFP_REPEAT, pgd_ctor); -} - -static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) -{ - quicklist_free(QUICK_PGD, NULL, pgd); -} - static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) { @@ -81,7 +63,7 @@ do { \ static inline void check_pgt_cache(void) { - quicklist_trim(QUICK_PGD, NULL, 25, 16); + __check_pgt_cache(); quicklist_trim(QUICK_PT, NULL, 25, 16); } |