| 1 | #ifndef _ALPHA_PGALLOC_H
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| 2 | #define _ALPHA_PGALLOC_H
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| 3 |
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| 4 | #include <linux/mm.h>
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| 5 | #include <linux/mmzone.h>
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| 6 |
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| 7 | |
| 8 | * Allocate and free page tables. The xxx_kernel() versions are
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| 9 | * used to allocate a kernel page table - this turns on ASN bits
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| 10 | * if any.
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| 11 |
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| 12 |
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| 13 | static inline void
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| 14 | pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte)
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| 15 | {
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| 16 | pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET));
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| 17 | }
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| 18 |
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| 19 | static inline void
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| 20 | pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
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| 21 | {
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| 22 | pmd_set(pmd, pte);
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| 23 | }
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| 24 |
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| 25 | static inline void
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| 26 | pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
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| 27 | {
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| 28 | pgd_set(pgd, pmd);
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| 29 | }
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| 30 |
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| 31 | extern pgd_t *pgd_alloc(struct mm_struct *mm);
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| 32 |
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| 33 | static inline void
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| 34 | pgd_free(pgd_t *pgd)
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| 35 | {
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| 36 | free_page((unsigned long)pgd);
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| 37 | }
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| 38 |
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| 39 | static inline pmd_t *
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| 40 | pmd_alloc_one(struct mm_struct *mm, unsigned long address)
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| 41 | {
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| 42 | pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
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| 43 | return ret;
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| 44 | }
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| 45 |
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| 46 | static inline void
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| 47 | pmd_free(pmd_t *pmd)
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| 48 | {
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| 49 | free_page((unsigned long)pmd);
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| 50 | }
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| 51 |
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| 52 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
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| 53 |
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| 54 | static inline void
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| 55 | pte_free_kernel(pte_t *pte)
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| 56 | {
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| 57 | free_page((unsigned long)pte);
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| 58 | }
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| 59 |
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| 60 | static inline struct page *
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| 61 | pte_alloc_one(struct mm_struct *mm, unsigned long addr)
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| 62 | {
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| 63 | pte_t *pte = pte_alloc_one_kernel(mm, addr);
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| 64 | if (pte)
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| 65 | return virt_to_page(pte);
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| 66 | return NULL;
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| 67 | }
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| 68 |
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| 69 | static inline void
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| 70 | pte_free(struct page *page)
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| 71 | {
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| 72 | __free_page(page);
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| 73 | }
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| 74 |
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| 75 | #define check_pgt_cache() do { } while (0)
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| 76 |
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| 77 | #endif
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