Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _ALPHA_PGALLOC_H |
2 | #define _ALPHA_PGALLOC_H | |
3 | ||
1da177e4 LT |
4 | #include <linux/mm.h> |
5 | #include <linux/mmzone.h> | |
6 | ||
7 | /* | |
8 | * Allocate and free page tables. The xxx_kernel() versions are | |
9 | * used to allocate a kernel page table - this turns on ASN bits | |
10 | * if any. | |
11 | */ | |
12 | ||
13 | static inline void | |
2f569afd | 14 | pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte) |
1da177e4 LT |
15 | { |
16 | pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET)); | |
17 | } | |
2f569afd | 18 | #define pmd_pgtable(pmd) pmd_page(pmd) |
1da177e4 LT |
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 | |
5e541973 | 35 | pgd_free(struct mm_struct *mm, pgd_t *pgd) |
1da177e4 LT |
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 | { | |
32d6bd90 | 43 | pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); |
1da177e4 LT |
44 | return ret; |
45 | } | |
46 | ||
47 | static inline void | |
5e541973 | 48 | pmd_free(struct mm_struct *mm, pmd_t *pmd) |
1da177e4 LT |
49 | { |
50 | free_page((unsigned long)pmd); | |
51 | } | |
52 | ||
5da7f3d7 IK |
53 | static inline pte_t * |
54 | pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) | |
55 | { | |
32d6bd90 | 56 | pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); |
5da7f3d7 IK |
57 | return pte; |
58 | } | |
1da177e4 LT |
59 | |
60 | static inline void | |
5e541973 | 61 | pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
1da177e4 LT |
62 | { |
63 | free_page((unsigned long)pte); | |
64 | } | |
65 | ||
2f569afd MS |
66 | static inline pgtable_t |
67 | pte_alloc_one(struct mm_struct *mm, unsigned long address) | |
1da177e4 | 68 | { |
2f569afd MS |
69 | pte_t *pte = pte_alloc_one_kernel(mm, address); |
70 | struct page *page; | |
71 | ||
72 | if (!pte) | |
73 | return NULL; | |
74 | page = virt_to_page(pte); | |
3fd681b6 KS |
75 | if (!pgtable_page_ctor(page)) { |
76 | __free_page(page); | |
77 | return NULL; | |
78 | } | |
2f569afd | 79 | return page; |
1da177e4 LT |
80 | } |
81 | ||
82 | static inline void | |
2f569afd | 83 | pte_free(struct mm_struct *mm, pgtable_t page) |
1da177e4 | 84 | { |
2f569afd | 85 | pgtable_page_dtor(page); |
1da177e4 LT |
86 | __free_page(page); |
87 | } | |
88 | ||
89 | #define check_pgt_cache() do { } while (0) | |
90 | ||
91 | #endif /* _ALPHA_PGALLOC_H */ |