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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 | { | |
43 | pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO); | |
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 | ||
53 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr); | |
54 | ||
55 | static inline void | |
5e541973 | 56 | pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
1da177e4 LT |
57 | { |
58 | free_page((unsigned long)pte); | |
59 | } | |
60 | ||
2f569afd MS |
61 | static inline pgtable_t |
62 | pte_alloc_one(struct mm_struct *mm, unsigned long address) | |
1da177e4 | 63 | { |
2f569afd MS |
64 | pte_t *pte = pte_alloc_one_kernel(mm, address); |
65 | struct page *page; | |
66 | ||
67 | if (!pte) | |
68 | return NULL; | |
69 | page = virt_to_page(pte); | |
70 | pgtable_page_ctor(page); | |
71 | return page; | |
1da177e4 LT |
72 | } |
73 | ||
74 | static inline void | |
2f569afd | 75 | pte_free(struct mm_struct *mm, pgtable_t page) |
1da177e4 | 76 | { |
2f569afd | 77 | pgtable_page_dtor(page); |
1da177e4 LT |
78 | __free_page(page); |
79 | } | |
80 | ||
81 | #define check_pgt_cache() do { } while (0) | |
82 | ||
83 | #endif /* _ALPHA_PGALLOC_H */ |