02402303d89b50111de303715a1560c2d6fdcea9
[linux-2.6.git] / include / asm-sh / hugetlb.h
1 #ifndef _ASM_SH_HUGETLB_H
2 #define _ASM_SH_HUGETLB_H
3
4 #include <asm/page.h>
5
6
7 static 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  */
17 static inline int prepare_hugepage_range(unsigned long addr, unsigned long len)
18 {
19         if (len & ~HPAGE_MASK)
20                 return -EINVAL;
21         if (addr & ~HPAGE_MASK)
22                 return -EINVAL;
23         return 0;
24 }
25
26 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
27 }
28
29 static inline void hugetlb_free_pgd_range(struct mmu_gather **tlb,
30                                           unsigned long addr, unsigned long end,
31                                           unsigned long floor,
32                                           unsigned long ceiling)
33 {
34         free_pgd_range(tlb, addr, end, floor, ceiling);
35 }
36
37 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
38                                    pte_t *ptep, pte_t pte)
39 {
40         set_pte_at(mm, addr, ptep, pte);
41 }
42
43 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
44                                             unsigned long addr, pte_t *ptep)
45 {
46         return ptep_get_and_clear(mm, addr, ptep);
47 }
48
49 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
50                                          unsigned long addr, pte_t *ptep)
51 {
52 }
53
54 static inline int huge_pte_none(pte_t pte)
55 {
56         return pte_none(pte);
57 }
58
59 static inline pte_t huge_pte_wrprotect(pte_t pte)
60 {
61         return pte_wrprotect(pte);
62 }
63
64 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
65                                            unsigned long addr, pte_t *ptep)
66 {
67         ptep_set_wrprotect(mm, addr, ptep);
68 }
69
70 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
71                                              unsigned long addr, pte_t *ptep,
72                                              pte_t pte, int dirty)
73 {
74         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
75 }
76
77 static inline pte_t huge_ptep_get(pte_t *ptep)
78 {
79         return *ptep;
80 }
81
82 static inline int arch_prepare_hugepage(struct page *page)
83 {
84         return 0;
85 }
86
87 static inline void arch_release_hugepage(struct page *page)
88 {
89 }
90
91 #endif /* _ASM_SH_HUGETLB_H */