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047ea784 PM |
1 | #ifndef _ASM_POWERPC_PGALLOC_H |
2 | #define _ASM_POWERPC_PGALLOC_H | |
88ced031 | 3 | #ifdef __KERNEL__ |
047ea784 PM |
4 | |
5 | #ifndef CONFIG_PPC64 | |
6 | #include <asm-ppc/pgalloc.h> | |
7 | #else | |
1da177e4 LT |
8 | |
9 | #include <linux/mm.h> | |
10 | #include <linux/slab.h> | |
11 | #include <linux/cpumask.h> | |
12 | #include <linux/percpu.h> | |
13 | ||
e28f7faf DG |
14 | extern kmem_cache_t *pgtable_cache[]; |
15 | ||
3c726f8d BH |
16 | #ifdef CONFIG_PPC_64K_PAGES |
17 | #define PTE_CACHE_NUM 0 | |
87655ff2 BH |
18 | #define PMD_CACHE_NUM 1 |
19 | #define PGD_CACHE_NUM 2 | |
3c726f8d | 20 | #else |
e28f7faf DG |
21 | #define PTE_CACHE_NUM 0 |
22 | #define PMD_CACHE_NUM 1 | |
23 | #define PUD_CACHE_NUM 1 | |
24 | #define PGD_CACHE_NUM 0 | |
3c726f8d | 25 | #endif |
1da177e4 LT |
26 | |
27 | /* | |
28 | * This program is free software; you can redistribute it and/or | |
29 | * modify it under the terms of the GNU General Public License | |
30 | * as published by the Free Software Foundation; either version | |
31 | * 2 of the License, or (at your option) any later version. | |
32 | */ | |
33 | ||
e28f7faf | 34 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
1da177e4 | 35 | { |
e28f7faf | 36 | return kmem_cache_alloc(pgtable_cache[PGD_CACHE_NUM], GFP_KERNEL); |
1da177e4 LT |
37 | } |
38 | ||
e28f7faf | 39 | static inline void pgd_free(pgd_t *pgd) |
1da177e4 | 40 | { |
e28f7faf DG |
41 | kmem_cache_free(pgtable_cache[PGD_CACHE_NUM], pgd); |
42 | } | |
43 | ||
3c726f8d BH |
44 | #ifndef CONFIG_PPC_64K_PAGES |
45 | ||
e28f7faf DG |
46 | #define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD) |
47 | ||
48 | static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) | |
49 | { | |
50 | return kmem_cache_alloc(pgtable_cache[PUD_CACHE_NUM], | |
51 | GFP_KERNEL|__GFP_REPEAT); | |
52 | } | |
53 | ||
54 | static inline void pud_free(pud_t *pud) | |
55 | { | |
56 | kmem_cache_free(pgtable_cache[PUD_CACHE_NUM], pud); | |
1da177e4 LT |
57 | } |
58 | ||
3c726f8d BH |
59 | static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) |
60 | { | |
61 | pud_set(pud, (unsigned long)pmd); | |
62 | } | |
63 | ||
64 | #define pmd_populate(mm, pmd, pte_page) \ | |
65 | pmd_populate_kernel(mm, pmd, page_address(pte_page)) | |
66 | #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte)) | |
67 | ||
68 | ||
69 | #else /* CONFIG_PPC_64K_PAGES */ | |
70 | ||
71 | #define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd) | |
72 | ||
73 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, | |
74 | pte_t *pte) | |
75 | { | |
76 | pmd_set(pmd, (unsigned long)pte); | |
77 | } | |
78 | ||
79 | #define pmd_populate(mm, pmd, pte_page) \ | |
80 | pmd_populate_kernel(mm, pmd, page_address(pte_page)) | |
81 | ||
82 | #endif /* CONFIG_PPC_64K_PAGES */ | |
1da177e4 | 83 | |
e28f7faf | 84 | static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) |
1da177e4 | 85 | { |
e28f7faf DG |
86 | return kmem_cache_alloc(pgtable_cache[PMD_CACHE_NUM], |
87 | GFP_KERNEL|__GFP_REPEAT); | |
1da177e4 LT |
88 | } |
89 | ||
e28f7faf | 90 | static inline void pmd_free(pmd_t *pmd) |
1da177e4 | 91 | { |
e28f7faf | 92 | kmem_cache_free(pgtable_cache[PMD_CACHE_NUM], pmd); |
1da177e4 LT |
93 | } |
94 | ||
3c726f8d BH |
95 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, |
96 | unsigned long address) | |
1da177e4 | 97 | { |
e28f7faf DG |
98 | return kmem_cache_alloc(pgtable_cache[PTE_CACHE_NUM], |
99 | GFP_KERNEL|__GFP_REPEAT); | |
1da177e4 LT |
100 | } |
101 | ||
3c726f8d BH |
102 | static inline struct page *pte_alloc_one(struct mm_struct *mm, |
103 | unsigned long address) | |
1da177e4 | 104 | { |
e28f7faf | 105 | return virt_to_page(pte_alloc_one_kernel(mm, address)); |
1da177e4 LT |
106 | } |
107 | ||
108 | static inline void pte_free_kernel(pte_t *pte) | |
109 | { | |
e28f7faf | 110 | kmem_cache_free(pgtable_cache[PTE_CACHE_NUM], pte); |
1da177e4 LT |
111 | } |
112 | ||
113 | static inline void pte_free(struct page *ptepage) | |
114 | { | |
e28f7faf | 115 | pte_free_kernel(page_address(ptepage)); |
1da177e4 LT |
116 | } |
117 | ||
e28f7faf DG |
118 | #define PGF_CACHENUM_MASK 0xf |
119 | ||
120 | typedef struct pgtable_free { | |
121 | unsigned long val; | |
122 | } pgtable_free_t; | |
123 | ||
124 | static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum, | |
125 | unsigned long mask) | |
1da177e4 | 126 | { |
e28f7faf | 127 | BUG_ON(cachenum > PGF_CACHENUM_MASK); |
1da177e4 | 128 | |
e28f7faf DG |
129 | return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum}; |
130 | } | |
1da177e4 | 131 | |
e28f7faf DG |
132 | static inline void pgtable_free(pgtable_free_t pgf) |
133 | { | |
134 | void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK); | |
135 | int cachenum = pgf.val & PGF_CACHENUM_MASK; | |
1da177e4 | 136 | |
e28f7faf DG |
137 | kmem_cache_free(pgtable_cache[cachenum], p); |
138 | } | |
1da177e4 | 139 | |
3c726f8d | 140 | extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf); |
e28f7faf DG |
141 | |
142 | #define __pte_free_tlb(tlb, ptepage) \ | |
143 | pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \ | |
144 | PTE_CACHE_NUM, PTE_TABLE_SIZE-1)) | |
145 | #define __pmd_free_tlb(tlb, pmd) \ | |
146 | pgtable_free_tlb(tlb, pgtable_free_cache(pmd, \ | |
147 | PMD_CACHE_NUM, PMD_TABLE_SIZE-1)) | |
3c726f8d | 148 | #ifndef CONFIG_PPC_64K_PAGES |
e28f7faf DG |
149 | #define __pud_free_tlb(tlb, pmd) \ |
150 | pgtable_free_tlb(tlb, pgtable_free_cache(pud, \ | |
151 | PUD_CACHE_NUM, PUD_TABLE_SIZE-1)) | |
3c726f8d | 152 | #endif /* CONFIG_PPC_64K_PAGES */ |
1da177e4 LT |
153 | |
154 | #define check_pgt_cache() do { } while (0) | |
155 | ||
047ea784 | 156 | #endif /* CONFIG_PPC64 */ |
88ced031 | 157 | #endif /* __KERNEL__ */ |
047ea784 | 158 | #endif /* _ASM_POWERPC_PGALLOC_H */ |