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review.evervolv.com / android_kernel_htc_msm8960 / 1097d78180e1a2916c2bcdb15cb90ba131af9cd8 / . / arch / x86 / include / asm / hugetlb.h
blob: 48fa3915fd023301188e4c27a5b6ab7d5939e366 [file] [log] [blame]
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]1#ifndef _ASM_X86_HUGETLB_H
2#define _ASM_X86_HUGETLB_H
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]3
4#include <asm/page.h>
5
6
7static inline int is_hugepage_only_range(struct mm_struct *mm,
8 unsigned long addr,
9 unsigned long len) {
10 return 0;
11}
12
13/*
14 * If the arch doesn't supply something else, assume that hugepage
15 * size aligned regions are ok without further preparation.
16 */
Andi Kleena5516432008-07-23 21:27:41 -0700[diff] [blame]17static inline int prepare_hugepage_range(struct file *file,
18 unsigned long addr, unsigned long len)
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]19{
Andi Kleena5516432008-07-23 21:27:41 -0700[diff] [blame]20 struct hstate *h = hstate_file(file);
21 if (len & ~huge_page_mask(h))
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]22 return -EINVAL;
Andi Kleena5516432008-07-23 21:27:41 -0700[diff] [blame]23 if (addr & ~huge_page_mask(h))
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]24 return -EINVAL;
25 return 0;
26}
27
28static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
29}
30
Jan Beulich42b77722008-07-23 21:27:10 -0700[diff] [blame]31static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
Gerald Schaefer6d779072008-04-28 02:13:27 -0700[diff] [blame]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
39static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
40 pte_t *ptep, pte_t pte)
41{
42 set_pte_at(mm, addr, ptep, pte);
43}
44
45static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
46 unsigned long addr, pte_t *ptep)
47{
48 return ptep_get_and_clear(mm, addr, ptep);
49}
50
Gerald Schaefer8fe627e2008-04-28 02:13:28 -0700[diff] [blame]51static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
52 unsigned long addr, pte_t *ptep)
53{
Anthony Iliopoulos8fb57ba2014-05-14 11:29:48 +0200[diff] [blame]54 ptep_clear_flush(vma, addr, ptep);
Gerald Schaefer8fe627e2008-04-28 02:13:28 -0700[diff] [blame]55}
56
Gerald Schaefer7f2e9522008-04-28 02:13:29 -0700[diff] [blame]57static inline int huge_pte_none(pte_t pte)
58{
59 return pte_none(pte);
60}
61
62static inline pte_t huge_pte_wrprotect(pte_t pte)
63{
64 return pte_wrprotect(pte);
65}
66
67static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
68 unsigned long addr, pte_t *ptep)
69{
70 ptep_set_wrprotect(mm, addr, ptep);
71}
72
73static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
74 unsigned long addr, pte_t *ptep,
75 pte_t pte, int dirty)
76{
77 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
78}
79
80static inline pte_t huge_ptep_get(pte_t *ptep)
81{
82 return *ptep;
83}
84
85static inline int arch_prepare_hugepage(struct page *page)
86{
87 return 0;
88}
89
90static inline void arch_release_hugepage(struct page *page)
91{
92}
93
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]94#endif /* _ASM_X86_HUGETLB_H */