projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 084bd298 SC |
1 | /* |
| 2 | * arch/arm64/include/asm/hugetlb.h | |
| 3 | * | |
| 4 | * Copyright (C) 2013 Linaro Ltd. | |
| 5 | * | |
| 6 | * Based on arch/x86/include/asm/hugetlb.h | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License version 2 as | |
| 10 | * published by the Free Software Foundation. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with this program; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #ifndef __ASM_HUGETLB_H | |
| 23 | #define __ASM_HUGETLB_H | |
| 24 | ||
| 25 | #include <asm-generic/hugetlb.h> | |
| 26 | #include <asm/page.h> | |
| 27 | ||
| 28 | static inline pte_t huge_ptep_get(pte_t *ptep) | |
| 29 | { | |
| 30 | return *ptep; | |
| 31 | } | |
| 32 | ||
| 33 | static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, | |
| 34 | pte_t *ptep, pte_t pte) | |
| 35 | { | |
| 36 | set_pte_at(mm, addr, ptep, pte); | |
| 37 | } | |
| 38 | ||
| 39 | static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, | |
| 40 | unsigned long addr, pte_t *ptep) | |
| 41 | { | |
| 42 | ptep_clear_flush(vma, addr, ptep); | |
| 43 | } | |
| 44 | ||
| 45 | static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, | |
| 46 | unsigned long addr, pte_t *ptep) | |
| 47 | { | |
| 48 | ptep_set_wrprotect(mm, addr, ptep); | |
| 49 | } | |
| 50 | ||
| 51 | static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, | |
| 52 | unsigned long addr, pte_t *ptep) | |
| 53 | { | |
| 54 | return ptep_get_and_clear(mm, addr, ptep); | |
| 55 | } | |
| 56 | ||
| 57 | static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, | |
| 58 | unsigned long addr, pte_t *ptep, | |
| 59 | pte_t pte, int dirty) | |
| 60 | { | |
| 61 | return ptep_set_access_flags(vma, addr, ptep, pte, dirty); | |
| 62 | } | |
| 63 | ||
| 64 | static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, | |
| 65 | unsigned long addr, unsigned long end, | |
| 66 | unsigned long floor, | |
| 67 | unsigned long ceiling) | |
| 68 | { | |
| 69 | free_pgd_range(tlb, addr, end, floor, ceiling); | |
| 70 | } | |
| 71 | ||
| 72 | static inline int is_hugepage_only_range(struct mm_struct *mm, | |
| 73 | unsigned long addr, unsigned long len) | |
| 74 | { | |
| 75 | return 0; | |
| 76 | } | |
| 77 | ||
| 78 | static inline int prepare_hugepage_range(struct file *file, | |
| 79 | unsigned long addr, unsigned long len) | |
| 80 | { | |
| 81 | struct hstate *h = hstate_file(file); | |
| 82 | if (len & ~huge_page_mask(h)) | |
| 83 | return -EINVAL; | |
| 84 | if (addr & ~huge_page_mask(h)) | |
| 85 | return -EINVAL; | |
| 86 | return 0; | |
| 87 | } | |
| 88 | ||
| 89 | static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) | |
| 90 | { | |
| 91 | } | |
| 92 | ||
| 93 | static inline int huge_pte_none(pte_t pte) | |
| 94 | { | |
| 95 | return pte_none(pte); | |
| 96 | } | |
| 97 | ||
| 98 | static inline pte_t huge_pte_wrprotect(pte_t pte) | |
| 99 | { | |
| 100 | return pte_wrprotect(pte); | |
| 101 | } | |
| 102 | ||
| 103 | static inline int arch_prepare_hugepage(struct page *page) | |
| 104 | { | |
| 105 | return 0; | |
| 106 | } | |
| 107 | ||
| 108 | static inline void arch_release_hugepage(struct page *page) | |
| 109 | { | |
| 110 | } | |
| 111 | ||
| 112 | static inline void arch_clear_hugepage_flags(struct page *page) | |
| 113 | { | |
| 114 | clear_bit(PG_dcache_clean, &page->flags); | |
| 115 | } | |
| 116 | ||
| 117 | #endif /* __ASM_HUGETLB_H */ |