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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 | ||
e18b890b | 14 | extern struct kmem_cache *pgtable_cache[]; |
e28f7faf | 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 | |
f10a04c0 | 20 | #define HUGEPTE_CACHE_NUM 3 |
3c726f8d | 21 | #else |
e28f7faf DG |
22 | #define PTE_CACHE_NUM 0 |
23 | #define PMD_CACHE_NUM 1 | |
24 | #define PUD_CACHE_NUM 1 | |
25 | #define PGD_CACHE_NUM 0 | |
f10a04c0 | 26 | #define HUGEPTE_CACHE_NUM 2 |
3c726f8d | 27 | #endif |
1da177e4 LT |
28 | |
29 | /* | |
30 | * This program is free software; you can redistribute it and/or | |
31 | * modify it under the terms of the GNU General Public License | |
32 | * as published by the Free Software Foundation; either version | |
33 | * 2 of the License, or (at your option) any later version. | |
34 | */ | |
35 | ||
e28f7faf | 36 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
1da177e4 | 37 | { |
e28f7faf | 38 | return kmem_cache_alloc(pgtable_cache[PGD_CACHE_NUM], GFP_KERNEL); |
1da177e4 LT |
39 | } |
40 | ||
e28f7faf | 41 | static inline void pgd_free(pgd_t *pgd) |
1da177e4 | 42 | { |
e28f7faf DG |
43 | kmem_cache_free(pgtable_cache[PGD_CACHE_NUM], pgd); |
44 | } | |
45 | ||
3c726f8d BH |
46 | #ifndef CONFIG_PPC_64K_PAGES |
47 | ||
e28f7faf DG |
48 | #define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD) |
49 | ||
50 | static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) | |
51 | { | |
52 | return kmem_cache_alloc(pgtable_cache[PUD_CACHE_NUM], | |
53 | GFP_KERNEL|__GFP_REPEAT); | |
54 | } | |
55 | ||
56 | static inline void pud_free(pud_t *pud) | |
57 | { | |
58 | kmem_cache_free(pgtable_cache[PUD_CACHE_NUM], pud); | |
1da177e4 LT |
59 | } |
60 | ||
3c726f8d BH |
61 | static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) |
62 | { | |
63 | pud_set(pud, (unsigned long)pmd); | |
64 | } | |
65 | ||
66 | #define pmd_populate(mm, pmd, pte_page) \ | |
67 | pmd_populate_kernel(mm, pmd, page_address(pte_page)) | |
68 | #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte)) | |
69 | ||
70 | ||
71 | #else /* CONFIG_PPC_64K_PAGES */ | |
72 | ||
73 | #define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd) | |
74 | ||
75 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, | |
76 | pte_t *pte) | |
77 | { | |
78 | pmd_set(pmd, (unsigned long)pte); | |
79 | } | |
80 | ||
81 | #define pmd_populate(mm, pmd, pte_page) \ | |
82 | pmd_populate_kernel(mm, pmd, page_address(pte_page)) | |
83 | ||
84 | #endif /* CONFIG_PPC_64K_PAGES */ | |
1da177e4 | 85 | |
e28f7faf | 86 | static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) |
1da177e4 | 87 | { |
e28f7faf DG |
88 | return kmem_cache_alloc(pgtable_cache[PMD_CACHE_NUM], |
89 | GFP_KERNEL|__GFP_REPEAT); | |
1da177e4 LT |
90 | } |
91 | ||
e28f7faf | 92 | static inline void pmd_free(pmd_t *pmd) |
1da177e4 | 93 | { |
e28f7faf | 94 | kmem_cache_free(pgtable_cache[PMD_CACHE_NUM], pmd); |
1da177e4 LT |
95 | } |
96 | ||
3c726f8d BH |
97 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, |
98 | unsigned long address) | |
1da177e4 | 99 | { |
e28f7faf DG |
100 | return kmem_cache_alloc(pgtable_cache[PTE_CACHE_NUM], |
101 | GFP_KERNEL|__GFP_REPEAT); | |
1da177e4 LT |
102 | } |
103 | ||
3c726f8d BH |
104 | static inline struct page *pte_alloc_one(struct mm_struct *mm, |
105 | unsigned long address) | |
1da177e4 | 106 | { |
e28f7faf | 107 | return virt_to_page(pte_alloc_one_kernel(mm, address)); |
1da177e4 LT |
108 | } |
109 | ||
110 | static inline void pte_free_kernel(pte_t *pte) | |
111 | { | |
e28f7faf | 112 | kmem_cache_free(pgtable_cache[PTE_CACHE_NUM], pte); |
1da177e4 LT |
113 | } |
114 | ||
115 | static inline void pte_free(struct page *ptepage) | |
116 | { | |
e28f7faf | 117 | pte_free_kernel(page_address(ptepage)); |
1da177e4 LT |
118 | } |
119 | ||
c9169f87 | 120 | #define PGF_CACHENUM_MASK 0x3 |
e28f7faf DG |
121 | |
122 | typedef struct pgtable_free { | |
123 | unsigned long val; | |
124 | } pgtable_free_t; | |
125 | ||
126 | static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum, | |
127 | unsigned long mask) | |
1da177e4 | 128 | { |
e28f7faf | 129 | BUG_ON(cachenum > PGF_CACHENUM_MASK); |
1da177e4 | 130 | |
e28f7faf DG |
131 | return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum}; |
132 | } | |
1da177e4 | 133 | |
e28f7faf DG |
134 | static inline void pgtable_free(pgtable_free_t pgf) |
135 | { | |
136 | void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK); | |
137 | int cachenum = pgf.val & PGF_CACHENUM_MASK; | |
1da177e4 | 138 | |
e28f7faf DG |
139 | kmem_cache_free(pgtable_cache[cachenum], p); |
140 | } | |
1da177e4 | 141 | |
3c726f8d | 142 | extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf); |
e28f7faf DG |
143 | |
144 | #define __pte_free_tlb(tlb, ptepage) \ | |
145 | pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \ | |
146 | PTE_CACHE_NUM, PTE_TABLE_SIZE-1)) | |
147 | #define __pmd_free_tlb(tlb, pmd) \ | |
148 | pgtable_free_tlb(tlb, pgtable_free_cache(pmd, \ | |
149 | PMD_CACHE_NUM, PMD_TABLE_SIZE-1)) | |
3c726f8d | 150 | #ifndef CONFIG_PPC_64K_PAGES |
200a4552 | 151 | #define __pud_free_tlb(tlb, pud) \ |
e28f7faf DG |
152 | pgtable_free_tlb(tlb, pgtable_free_cache(pud, \ |
153 | PUD_CACHE_NUM, PUD_TABLE_SIZE-1)) | |
3c726f8d | 154 | #endif /* CONFIG_PPC_64K_PAGES */ |
1da177e4 LT |
155 | |
156 | #define check_pgt_cache() do { } while (0) | |
157 | ||
047ea784 | 158 | #endif /* CONFIG_PPC64 */ |
88ced031 | 159 | #endif /* __KERNEL__ */ |
047ea784 | 160 | #endif /* _ASM_POWERPC_PGALLOC_H */ |