| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ALPHA_PGALLOC_H |
| 2 | #define _ALPHA_PGALLOC_H |
| 3 | |
| 4 | #include <linux/config.h> |
| 5 | #include <linux/mm.h> |
| 6 | #include <linux/mmzone.h> |
| 7 | |
| 8 | /* |
| 9 | * Allocate and free page tables. The xxx_kernel() versions are |
| 10 | * used to allocate a kernel page table - this turns on ASN bits |
| 11 | * if any. |
| 12 | */ |
| 13 | |
| 14 | static inline void |
| 15 | pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte) |
| 16 | { |
| 17 | pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET)); |
| 18 | } |
| 19 | |
| 20 | static inline void |
| 21 | pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) |
| 22 | { |
| 23 | pmd_set(pmd, pte); |
| 24 | } |
| 25 | |
| 26 | static inline void |
| 27 | pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) |
| 28 | { |
| 29 | pgd_set(pgd, pmd); |
| 30 | } |
| 31 | |
| 32 | extern pgd_t *pgd_alloc(struct mm_struct *mm); |
| 33 | |
| 34 | static inline void |
| 35 | pgd_free(pgd_t *pgd) |
| 36 | { |
| 37 | free_page((unsigned long)pgd); |
| 38 | } |
| 39 | |
| 40 | static inline pmd_t * |
| 41 | pmd_alloc_one(struct mm_struct *mm, unsigned long address) |
| 42 | { |
| 43 | pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO); |
| 44 | return ret; |
| 45 | } |
| 46 | |
| 47 | static inline void |
| 48 | pmd_free(pmd_t *pmd) |
| 49 | { |
| 50 | free_page((unsigned long)pmd); |
| 51 | } |
| 52 | |
| 53 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr); |
| 54 | |
| 55 | static inline void |
| 56 | pte_free_kernel(pte_t *pte) |
| 57 | { |
| 58 | free_page((unsigned long)pte); |
| 59 | } |
| 60 | |
| 61 | static inline struct page * |
| 62 | pte_alloc_one(struct mm_struct *mm, unsigned long addr) |
| 63 | { |
| 64 | pte_t *pte = pte_alloc_one_kernel(mm, addr); |
| 65 | if (pte) |
| 66 | return virt_to_page(pte); |
| 67 | return NULL; |
| 68 | } |
| 69 | |
| 70 | static inline void |
| 71 | pte_free(struct page *page) |
| 72 | { |
| 73 | __free_page(page); |
| 74 | } |
| 75 | |
| 76 | #define check_pgt_cache() do { } while (0) |
| 77 | |
| 78 | #endif /* _ALPHA_PGALLOC_H */ |