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047ea784 PM |
1 | #ifndef _ASM_POWERPC_PGALLOC_H |
2 | #define _ASM_POWERPC_PGALLOC_H | |
3 | ||
4 | #ifndef CONFIG_PPC64 | |
5 | #include <asm-ppc/pgalloc.h> | |
6 | #else | |
1da177e4 LT |
7 | |
8 | #include <linux/mm.h> | |
9 | #include <linux/slab.h> | |
10 | #include <linux/cpumask.h> | |
11 | #include <linux/percpu.h> | |
12 | ||
e28f7faf DG |
13 | extern kmem_cache_t *pgtable_cache[]; |
14 | ||
3c726f8d BH |
15 | #ifdef CONFIG_PPC_64K_PAGES |
16 | #define PTE_CACHE_NUM 0 | |
87655ff2 BH |
17 | #define PMD_CACHE_NUM 1 |
18 | #define PGD_CACHE_NUM 2 | |
3c726f8d | 19 | #else |
e28f7faf DG |
20 | #define PTE_CACHE_NUM 0 |
21 | #define PMD_CACHE_NUM 1 | |
22 | #define PUD_CACHE_NUM 1 | |
23 | #define PGD_CACHE_NUM 0 | |
3c726f8d | 24 | #endif |
1da177e4 LT |
25 | |
26 | /* | |
27 | * This program is free software; you can redistribute it and/or | |
28 | * modify it under the terms of the GNU General Public License | |
29 | * as published by the Free Software Foundation; either version | |
30 | * 2 of the License, or (at your option) any later version. | |
31 | */ | |
32 | ||
e28f7faf | 33 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
1da177e4 | 34 | { |
e28f7faf | 35 | return kmem_cache_alloc(pgtable_cache[PGD_CACHE_NUM], GFP_KERNEL); |
1da177e4 LT |
36 | } |
37 | ||
e28f7faf | 38 | static inline void pgd_free(pgd_t *pgd) |
1da177e4 | 39 | { |
e28f7faf DG |
40 | kmem_cache_free(pgtable_cache[PGD_CACHE_NUM], pgd); |
41 | } | |
42 | ||
3c726f8d BH |
43 | #ifndef CONFIG_PPC_64K_PAGES |
44 | ||
e28f7faf DG |
45 | #define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD) |
46 | ||
47 | static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) | |
48 | { | |
49 | return kmem_cache_alloc(pgtable_cache[PUD_CACHE_NUM], | |
50 | GFP_KERNEL|__GFP_REPEAT); | |
51 | } | |
52 | ||
53 | static inline void pud_free(pud_t *pud) | |
54 | { | |
55 | kmem_cache_free(pgtable_cache[PUD_CACHE_NUM], pud); | |
1da177e4 LT |
56 | } |
57 | ||
3c726f8d BH |
58 | static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) |
59 | { | |
60 | pud_set(pud, (unsigned long)pmd); | |
61 | } | |
62 | ||
63 | #define pmd_populate(mm, pmd, pte_page) \ | |
64 | pmd_populate_kernel(mm, pmd, page_address(pte_page)) | |
65 | #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte)) | |
66 | ||
67 | ||
68 | #else /* CONFIG_PPC_64K_PAGES */ | |
69 | ||
70 | #define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd) | |
71 | ||
72 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, | |
73 | pte_t *pte) | |
74 | { | |
75 | pmd_set(pmd, (unsigned long)pte); | |
76 | } | |
77 | ||
78 | #define pmd_populate(mm, pmd, pte_page) \ | |
79 | pmd_populate_kernel(mm, pmd, page_address(pte_page)) | |
80 | ||
81 | #endif /* CONFIG_PPC_64K_PAGES */ | |
1da177e4 | 82 | |
e28f7faf | 83 | static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) |
1da177e4 | 84 | { |
e28f7faf DG |
85 | return kmem_cache_alloc(pgtable_cache[PMD_CACHE_NUM], |
86 | GFP_KERNEL|__GFP_REPEAT); | |
1da177e4 LT |
87 | } |
88 | ||
e28f7faf | 89 | static inline void pmd_free(pmd_t *pmd) |
1da177e4 | 90 | { |
e28f7faf | 91 | kmem_cache_free(pgtable_cache[PMD_CACHE_NUM], pmd); |
1da177e4 LT |
92 | } |
93 | ||
3c726f8d BH |
94 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, |
95 | unsigned long address) | |
1da177e4 | 96 | { |
e28f7faf DG |
97 | return kmem_cache_alloc(pgtable_cache[PTE_CACHE_NUM], |
98 | GFP_KERNEL|__GFP_REPEAT); | |
1da177e4 LT |
99 | } |
100 | ||
3c726f8d BH |
101 | static inline struct page *pte_alloc_one(struct mm_struct *mm, |
102 | unsigned long address) | |
1da177e4 | 103 | { |
e28f7faf | 104 | return virt_to_page(pte_alloc_one_kernel(mm, address)); |
1da177e4 LT |
105 | } |
106 | ||
107 | static inline void pte_free_kernel(pte_t *pte) | |
108 | { | |
e28f7faf | 109 | kmem_cache_free(pgtable_cache[PTE_CACHE_NUM], pte); |
1da177e4 LT |
110 | } |
111 | ||
112 | static inline void pte_free(struct page *ptepage) | |
113 | { | |
e28f7faf | 114 | pte_free_kernel(page_address(ptepage)); |
1da177e4 LT |
115 | } |
116 | ||
e28f7faf DG |
117 | #define PGF_CACHENUM_MASK 0xf |
118 | ||
119 | typedef struct pgtable_free { | |
120 | unsigned long val; | |
121 | } pgtable_free_t; | |
122 | ||
123 | static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum, | |
124 | unsigned long mask) | |
1da177e4 | 125 | { |
e28f7faf | 126 | BUG_ON(cachenum > PGF_CACHENUM_MASK); |
1da177e4 | 127 | |
e28f7faf DG |
128 | return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum}; |
129 | } | |
1da177e4 | 130 | |
e28f7faf DG |
131 | static inline void pgtable_free(pgtable_free_t pgf) |
132 | { | |
133 | void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK); | |
134 | int cachenum = pgf.val & PGF_CACHENUM_MASK; | |
1da177e4 | 135 | |
e28f7faf DG |
136 | kmem_cache_free(pgtable_cache[cachenum], p); |
137 | } | |
1da177e4 | 138 | |
3c726f8d | 139 | extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf); |
e28f7faf DG |
140 | |
141 | #define __pte_free_tlb(tlb, ptepage) \ | |
142 | pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \ | |
143 | PTE_CACHE_NUM, PTE_TABLE_SIZE-1)) | |
144 | #define __pmd_free_tlb(tlb, pmd) \ | |
145 | pgtable_free_tlb(tlb, pgtable_free_cache(pmd, \ | |
146 | PMD_CACHE_NUM, PMD_TABLE_SIZE-1)) | |
3c726f8d | 147 | #ifndef CONFIG_PPC_64K_PAGES |
e28f7faf DG |
148 | #define __pud_free_tlb(tlb, pmd) \ |
149 | pgtable_free_tlb(tlb, pgtable_free_cache(pud, \ | |
150 | PUD_CACHE_NUM, PUD_TABLE_SIZE-1)) | |
3c726f8d | 151 | #endif /* CONFIG_PPC_64K_PAGES */ |
1da177e4 LT |
152 | |
153 | #define check_pgt_cache() do { } while (0) | |
154 | ||
047ea784 PM |
155 | #endif /* CONFIG_PPC64 */ |
156 | #endif /* _ASM_POWERPC_PGALLOC_H */ |