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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 | |
14 | pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte) | |
15 | { | |
16 | pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET)); | |
17 | } | |
18 | ||
19 | static inline void | |
20 | pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) | |
21 | { | |
22 | pmd_set(pmd, pte); | |
23 | } | |
24 | ||
25 | static inline void | |
26 | pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) | |
27 | { | |
28 | pgd_set(pgd, pmd); | |
29 | } | |
30 | ||
31 | extern pgd_t *pgd_alloc(struct mm_struct *mm); | |
32 | ||
33 | static inline void | |
34 | pgd_free(pgd_t *pgd) | |
35 | { | |
36 | free_page((unsigned long)pgd); | |
37 | } | |
38 | ||
39 | static inline pmd_t * | |
40 | pmd_alloc_one(struct mm_struct *mm, unsigned long address) | |
41 | { | |
42 | pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO); | |
43 | return ret; | |
44 | } | |
45 | ||
46 | static inline void | |
47 | pmd_free(pmd_t *pmd) | |
48 | { | |
49 | free_page((unsigned long)pmd); | |
50 | } | |
51 | ||
52 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr); | |
53 | ||
54 | static inline void | |
55 | pte_free_kernel(pte_t *pte) | |
56 | { | |
57 | free_page((unsigned long)pte); | |
58 | } | |
59 | ||
60 | static inline struct page * | |
61 | pte_alloc_one(struct mm_struct *mm, unsigned long addr) | |
62 | { | |
63 | pte_t *pte = pte_alloc_one_kernel(mm, addr); | |
64 | if (pte) | |
65 | return virt_to_page(pte); | |
66 | return NULL; | |
67 | } | |
68 | ||
69 | static inline void | |
70 | pte_free(struct page *page) | |
71 | { | |
72 | __free_page(page); | |
73 | } | |
74 | ||
75 | #define check_pgt_cache() do { } while (0) | |
76 | ||
77 | #endif /* _ALPHA_PGALLOC_H */ |