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. | |
| 084bd298 SC |
16 | */ |
| 17 | ||
| 18 | #ifndef __ASM_HUGETLB_H | |
| 19 | #define __ASM_HUGETLB_H | |
| 20 | ||
| 21 | #include <asm-generic/hugetlb.h> | |
| 22 | #include <asm/page.h> | |
| 23 | ||
| 24 | static inline pte_t huge_ptep_get(pte_t *ptep) | |
| 25 | { | |
| 26 | return *ptep; | |
| 27 | } | |
| 28 | ||
| 084bd298 | 29 | |
| 084bd298 SC |
30 | |
| 31 | static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, | |
| 32 | unsigned long addr, unsigned long end, | |
| 33 | unsigned long floor, | |
| 34 | unsigned long ceiling) | |
| 35 | { | |
| 36 | free_pgd_range(tlb, addr, end, floor, ceiling); | |
| 37 | } | |
| 38 | ||
| 39 | static inline int is_hugepage_only_range(struct mm_struct *mm, | |
| 40 | unsigned long addr, unsigned long len) | |
| 41 | { | |
| 42 | return 0; | |
| 43 | } | |
| 44 | ||
| 45 | static inline int prepare_hugepage_range(struct file *file, | |
| 46 | unsigned long addr, unsigned long len) | |
| 47 | { | |
| 48 | struct hstate *h = hstate_file(file); | |
| 49 | if (len & ~huge_page_mask(h)) | |
| 50 | return -EINVAL; | |
| 51 | if (addr & ~huge_page_mask(h)) | |
| 52 | return -EINVAL; | |
| 53 | return 0; | |
| 54 | } | |
| 55 | ||
| 084bd298 SC |
56 | static inline int huge_pte_none(pte_t pte) |
| 57 | { | |
| 58 | return pte_none(pte); | |
| 59 | } | |
| 60 | ||
| 61 | static inline pte_t huge_pte_wrprotect(pte_t pte) | |
| 62 | { | |
| 63 | return pte_wrprotect(pte); | |
| 64 | } | |
| 65 | ||
| 084bd298 SC |
66 | static inline void arch_clear_hugepage_flags(struct page *page) |
| 67 | { | |
| 68 | clear_bit(PG_dcache_clean, &page->flags); | |
| 69 | } | |
| 70 | ||
| 66b3923a DW |
71 | extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, |
| 72 | struct page *page, int writable); | |
| 73 | #define arch_make_huge_pte arch_make_huge_pte | |
| 74 | extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, | |
| 75 | pte_t *ptep, pte_t pte); | |
| 76 | extern int huge_ptep_set_access_flags(struct vm_area_struct *vma, | |
| 77 | unsigned long addr, pte_t *ptep, | |
| 78 | pte_t pte, int dirty); | |
| 79 | extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm, | |
| 80 | unsigned long addr, pte_t *ptep); | |
| 81 | extern void huge_ptep_set_wrprotect(struct mm_struct *mm, | |
| 82 | unsigned long addr, pte_t *ptep); | |
| 83 | extern void huge_ptep_clear_flush(struct vm_area_struct *vma, | |
| 84 | unsigned long addr, pte_t *ptep); | |
| 85 | ||
| 084bd298 | 86 | #endif /* __ASM_HUGETLB_H */ |