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1355e2a6 CM |
1 | /* |
2 | * arch/arm/include/asm/hugetlb.h | |
3 | * | |
4 | * Copyright (C) 2012 ARM 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_ARM_HUGETLB_H | |
23 | #define _ASM_ARM_HUGETLB_H | |
24 | ||
25 | #include <asm/page.h> | |
26 | #include <asm-generic/hugetlb.h> | |
27 | ||
28 | #include <asm/hugetlb-3level.h> | |
29 | ||
30 | static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, | |
31 | unsigned long addr, unsigned long end, | |
32 | unsigned long floor, | |
33 | unsigned long ceiling) | |
34 | { | |
35 | free_pgd_range(tlb, addr, end, floor, ceiling); | |
36 | } | |
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 | ||
1355e2a6 CM |
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 | ||
1355e2a6 CM |
66 | static inline void arch_clear_hugepage_flags(struct page *page) |
67 | { | |
68 | clear_bit(PG_dcache_clean, &page->flags); | |
69 | } | |
70 | ||
71 | #endif /* _ASM_ARM_HUGETLB_H */ |