Chen Liqin | 6bc9a39 | 2009-06-12 22:01:00 +0800 | [diff] [blame] | 1 | #ifndef _ASM_SCORE_PGALLOC_H |
| 2 | #define _ASM_SCORE_PGALLOC_H |
| 3 | |
| 4 | #include <linux/mm.h> |
| 5 | |
| 6 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, |
| 7 | pte_t *pte) |
| 8 | { |
| 9 | set_pmd(pmd, __pmd((unsigned long)pte)); |
| 10 | } |
| 11 | |
| 12 | static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, |
| 13 | pgtable_t pte) |
| 14 | { |
| 15 | set_pmd(pmd, __pmd((unsigned long)page_address(pte))); |
| 16 | } |
| 17 | |
| 18 | #define pmd_pgtable(pmd) pmd_page(pmd) |
| 19 | |
| 20 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
| 21 | { |
| 22 | pgd_t *ret, *init; |
| 23 | |
| 24 | ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER); |
| 25 | if (ret) { |
| 26 | init = pgd_offset(&init_mm, 0UL); |
| 27 | pgd_init((unsigned long)ret); |
| 28 | memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD, |
| 29 | (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t)); |
| 30 | } |
| 31 | |
| 32 | return ret; |
| 33 | } |
| 34 | |
| 35 | static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) |
| 36 | { |
| 37 | free_pages((unsigned long)pgd, PGD_ORDER); |
| 38 | } |
| 39 | |
| 40 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, |
| 41 | unsigned long address) |
| 42 | { |
| 43 | pte_t *pte; |
| 44 | |
| 45 | pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, |
| 46 | PTE_ORDER); |
| 47 | |
| 48 | return pte; |
| 49 | } |
| 50 | |
| 51 | static inline struct page *pte_alloc_one(struct mm_struct *mm, |
| 52 | unsigned long address) |
| 53 | { |
| 54 | struct page *pte; |
| 55 | |
| 56 | pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER); |
| 57 | if (pte) { |
| 58 | clear_highpage(pte); |
| 59 | pgtable_page_ctor(pte); |
| 60 | } |
| 61 | return pte; |
| 62 | } |
| 63 | |
| 64 | static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
| 65 | { |
| 66 | free_pages((unsigned long)pte, PTE_ORDER); |
| 67 | } |
| 68 | |
| 69 | static inline void pte_free(struct mm_struct *mm, pgtable_t pte) |
| 70 | { |
| 71 | pgtable_page_dtor(pte); |
| 72 | __free_pages(pte, PTE_ORDER); |
| 73 | } |
| 74 | |
Chen Liqin | ffa818b | 2009-08-30 12:30:16 +0800 | [diff] [blame] | 75 | #define __pte_free_tlb(tlb, pte, buf) \ |
Chen Liqin | 6bc9a39 | 2009-06-12 22:01:00 +0800 | [diff] [blame] | 76 | do { \ |
| 77 | pgtable_page_dtor(pte); \ |
| 78 | tlb_remove_page((tlb), pte); \ |
| 79 | } while (0) |
| 80 | |
| 81 | #define check_pgt_cache() do {} while (0) |
| 82 | |
| 83 | #endif /* _ASM_SCORE_PGALLOC_H */ |