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
hugetlb_free_pgd_range(struct mmu_gather * tlb,unsigned long addr,unsigned long end,unsigned long floor,unsigned long ceiling)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
is_hugepage_only_range(struct mm_struct * mm,unsigned long addr,unsigned long len)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
prepare_hugepage_range(struct file * file,unsigned long addr,unsigned long len)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
huge_pte_none(pte_t pte)56 static inline int huge_pte_none(pte_t pte)
57 {
58 return pte_none(pte);
59 }
60
huge_pte_wrprotect(pte_t pte)61 static inline pte_t huge_pte_wrprotect(pte_t pte)
62 {
63 return pte_wrprotect(pte);
64 }
65
arch_clear_hugepage_flags(struct page * page)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 */
72