Merge remote-tracking branches 'regulator/fix/88pm800', 'regulator/fix/max8973',...
[linux-drm-fsl-dcu.git] / arch / arm / include / asm / hugetlb.h
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
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
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 */