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1da177e4 LT |
1 | #ifndef _ASM_M32R_PGALLOC_H |
2 | #define _ASM_M32R_PGALLOC_H | |
3 | ||
1da177e4 LT |
4 | #include <linux/mm.h> |
5 | ||
6 | #include <asm/io.h> | |
7 | ||
8 | #define pmd_populate_kernel(mm, pmd, pte) \ | |
9 | set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))) | |
10 | ||
11 | static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd, | |
2f569afd | 12 | pgtable_t pte) |
1da177e4 LT |
13 | { |
14 | set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte))); | |
15 | } | |
2f569afd | 16 | #define pmd_pgtable(pmd) pmd_page(pmd) |
1da177e4 LT |
17 | |
18 | /* | |
19 | * Allocate and free page tables. | |
20 | */ | |
21 | static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm) | |
22 | { | |
23 | pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); | |
24 | ||
25 | return pgd; | |
26 | } | |
27 | ||
5e541973 | 28 | static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) |
1da177e4 LT |
29 | { |
30 | free_page((unsigned long)pgd); | |
31 | } | |
32 | ||
33 | static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm, | |
34 | unsigned long address) | |
35 | { | |
36 | pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO); | |
37 | ||
38 | return pte; | |
39 | } | |
40 | ||
2f569afd | 41 | static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm, |
1da177e4 LT |
42 | unsigned long address) |
43 | { | |
44 | struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO); | |
45 | ||
2f569afd | 46 | pgtable_page_ctor(pte); |
1da177e4 LT |
47 | return pte; |
48 | } | |
49 | ||
5e541973 | 50 | static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
1da177e4 LT |
51 | { |
52 | free_page((unsigned long)pte); | |
53 | } | |
54 | ||
2f569afd | 55 | static inline void pte_free(struct mm_struct *mm, pgtable_t pte) |
1da177e4 | 56 | { |
2f569afd | 57 | pgtable_page_dtor(pte); |
1da177e4 LT |
58 | __free_page(pte); |
59 | } | |
60 | ||
9e1b32ca | 61 | #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte)) |
1da177e4 LT |
62 | |
63 | /* | |
64 | * allocating and freeing a pmd is trivial: the 1-entry pmd is | |
65 | * inside the pgd, so has no extra memory associated with it. | |
66 | * (In the PAE case we free the pmds as part of the pgd.) | |
67 | */ | |
68 | ||
69 | #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) | |
5e541973 | 70 | #define pmd_free(mm, x) do { } while (0) |
9e1b32ca | 71 | #define __pmd_free_tlb(tlb, x, addr) do { } while (0) |
1da177e4 LT |
72 | #define pgd_populate(mm, pmd, pte) BUG() |
73 | ||
74 | #define check_pgt_cache() do { } while (0) | |
75 | ||
76 | #endif /* _ASM_M32R_PGALLOC_H */ |