diff options
Diffstat (limited to 'arch/arm64/include/asm/hugetlb.h')
-rw-r--r-- | arch/arm64/include/asm/hugetlb.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h new file mode 100644 index 000000000000..5b7ca8ace95f --- /dev/null +++ b/arch/arm64/include/asm/hugetlb.h | |||
@@ -0,0 +1,117 @@ | |||
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 */ | ||