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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _I386_PGALLOC_H |
| 2 | #define _I386_PGALLOC_H |
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| 3 | |||
| 4 | #include <linux/config.h> |
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| 5 | #include <asm/processor.h> |
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| 6 | #include <asm/fixmap.h> |
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| 7 | #include <linux/threads.h> |
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| 8 | #include <linux/mm.h> /* for struct page */ |
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| 9 | |||
| 10 | #define pmd_populate_kernel(mm, pmd, pte) \ |
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| 11 | set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))) |
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| 12 | |||
| 13 | static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte) |
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| 14 | { |
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| 15 | set_pmd(pmd, __pmd(_PAGE_TABLE + |
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| 16 | ((unsigned long long)page_to_pfn(pte) << |
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| 17 | (unsigned long long) PAGE_SHIFT))); |
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| 18 | } |
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| 19 | /* |
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| 20 | * Allocate and free page tables. |
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| 21 | */ |
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| 22 | |||
| 23 | extern pgd_t *pgd_alloc(struct mm_struct *); |
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| 24 | extern void pgd_free(pgd_t *pgd); |
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| 25 | |||
| 26 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); |
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| 27 | extern struct page *pte_alloc_one(struct mm_struct *, unsigned long); |
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| 28 | |||
| 29 | static inline void pte_free_kernel(pte_t *pte) |
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| 30 | { |
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| 31 | free_page((unsigned long)pte); |
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| 32 | } |
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| 33 | |||
| 34 | static inline void pte_free(struct page *pte) |
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| 35 | { |
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| 36 | __free_page(pte); |
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| 37 | } |
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| 38 | |||
| 39 | |||
| 40 | #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) |
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| 41 | |||
| 42 | /* |
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| 43 | * allocating and freeing a pmd is trivial: the 1-entry pmd is |
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| 44 | * inside the pgd, so has no extra memory associated with it. |
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| 45 | * (In the PAE case we free the pmds as part of the pgd.) |
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| 46 | */ |
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| 47 | |||
| 48 | #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) |
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| 49 | #define pmd_free(x) do { } while (0) |
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| 50 | #define __pmd_free_tlb(tlb,x) do { } while (0) |
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| 51 | #define pgd_populate(mm, pmd, pte) BUG() |
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| 52 | |||
| 53 | #define check_pgt_cache() do { } while (0) |
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| 54 | |||
| 55 | #endif /* _I386_PGALLOC_H */ |