Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef __ASM_SH_PGALLOC_H |
2 | #define __ASM_SH_PGALLOC_H | |
3 | ||
5f8c9908 PM |
4 | #include <linux/quicklist.h> |
5 | #include <asm/page.h> | |
6 | ||
0176bd3d | 7 | #define QUICK_PT 0 /* Other page table pages that are zero on free */ |
5f8c9908 | 8 | |
2a5eacca MF |
9 | extern pgd_t *pgd_alloc(struct mm_struct *); |
10 | extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); | |
11 | ||
782bb5a5 | 12 | #if PAGETABLE_LEVELS > 2 |
2a5eacca MF |
13 | extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd); |
14 | extern pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address); | |
15 | extern void pmd_free(struct mm_struct *mm, pmd_t *pmd); | |
5d9b4b19 | 16 | #endif |
b73c8063 | 17 | |
99a596f9 SM |
18 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, |
19 | pte_t *pte) | |
20 | { | |
21 | set_pmd(pmd, __pmd((unsigned long)pte)); | |
22 | } | |
1da177e4 LT |
23 | |
24 | static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, | |
2f569afd | 25 | pgtable_t pte) |
1da177e4 | 26 | { |
99a596f9 | 27 | set_pmd(pmd, __pmd((unsigned long)page_address(pte))); |
1da177e4 | 28 | } |
2f569afd | 29 | #define pmd_pgtable(pmd) pmd_page(pmd) |
1da177e4 LT |
30 | |
31 | /* | |
32 | * Allocate and free page tables. | |
33 | */ | |
1da177e4 LT |
34 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, |
35 | unsigned long address) | |
36 | { | |
32d6bd90 | 37 | return quicklist_alloc(QUICK_PT, GFP_KERNEL, NULL); |
1da177e4 LT |
38 | } |
39 | ||
2f569afd MS |
40 | static inline pgtable_t pte_alloc_one(struct mm_struct *mm, |
41 | unsigned long address) | |
1da177e4 | 42 | { |
2f569afd MS |
43 | struct page *page; |
44 | void *pg; | |
45 | ||
32d6bd90 | 46 | pg = quicklist_alloc(QUICK_PT, GFP_KERNEL, NULL); |
2f569afd MS |
47 | if (!pg) |
48 | return NULL; | |
49 | page = virt_to_page(pg); | |
478cf8ca KS |
50 | if (!pgtable_page_ctor(page)) { |
51 | quicklist_free(QUICK_PT, NULL, pg); | |
52 | return NULL; | |
53 | } | |
2f569afd | 54 | return page; |
1da177e4 LT |
55 | } |
56 | ||
5e541973 | 57 | static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
1da177e4 | 58 | { |
5f8c9908 | 59 | quicklist_free(QUICK_PT, NULL, pte); |
1da177e4 LT |
60 | } |
61 | ||
2f569afd | 62 | static inline void pte_free(struct mm_struct *mm, pgtable_t pte) |
1da177e4 | 63 | { |
2f569afd | 64 | pgtable_page_dtor(pte); |
5f8c9908 | 65 | quicklist_free_page(QUICK_PT, NULL, pte); |
1da177e4 LT |
66 | } |
67 | ||
9e1b32ca | 68 | #define __pte_free_tlb(tlb,pte,addr) \ |
2f569afd MS |
69 | do { \ |
70 | pgtable_page_dtor(pte); \ | |
71 | tlb_remove_page((tlb), (pte)); \ | |
72 | } while (0) | |
1da177e4 | 73 | |
5f8c9908 PM |
74 | static inline void check_pgt_cache(void) |
75 | { | |
5f8c9908 PM |
76 | quicklist_trim(QUICK_PT, NULL, 25, 16); |
77 | } | |
1da177e4 | 78 | |
1da177e4 | 79 | #endif /* __ASM_SH_PGALLOC_H */ |