| 1 | #ifndef __ASM_SH_PGALLOC_H
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| 2 | #define __ASM_SH_PGALLOC_H
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| 3 |
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| 4 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
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| 5 | pte_t *pte)
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| 6 | {
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| 7 | set_pmd(pmd, __pmd((unsigned long)pte));
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| 8 | }
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| 9 |
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| 10 | static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
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| 11 | struct page *pte)
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| 12 | {
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| 13 | set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
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| 14 | }
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| 15 |
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| 16 | |
| 17 | * Allocate and free page tables.
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| 18 |
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| 19 | static inline pgd_t *pgd_alloc(struct mm_struct *mm)
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| 20 | {
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| 21 | pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT);
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| 22 |
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| 23 | if (pgd) {
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| 24 | memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
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| 25 | memcpy(pgd + USER_PTRS_PER_PGD,
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| 26 | swapper_pg_dir + USER_PTRS_PER_PGD,
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| 27 | (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
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| 28 | }
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| 29 |
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| 30 | return pgd;
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| 31 | }
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| 32 |
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| 33 | static inline void pgd_free(pgd_t *pgd)
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| 34 | {
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| 35 | free_page((unsigned long)pgd);
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| 36 | }
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| 37 |
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| 38 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
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| 39 | unsigned long address)
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| 40 | {
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| 41 | return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
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| 42 | }
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| 43 |
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| 44 | static inline struct page *pte_alloc_one(struct mm_struct *mm,
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| 45 | unsigned long address)
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| 46 | {
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| 47 | return alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
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| 48 | }
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| 49 |
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| 50 | static inline void pte_free_kernel(pte_t *pte)
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| 51 | {
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| 52 | free_page((unsigned long)pte);
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| 53 | }
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| 54 |
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| 55 | static inline void pte_free(struct page *pte)
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| 56 | {
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| 57 | __free_page(pte);
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| 58 | }
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| 59 |
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| 60 | #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
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| 61 |
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| 62 | |
| 63 | * allocating and freeing a pmd is trivial: the 1-entry pmd is
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| 64 | * inside the pgd, so has no extra memory associated with it.
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| 65 |
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| 66 |
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| 67 | #define pmd_free(x) do { } while (0)
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| 68 | #define __pmd_free_tlb(tlb,x) do { } while (0)
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| 69 | #define check_pgt_cache() do { } while (0)
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| 70 |
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| 71 | #endif
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