Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / arch / sh / include / asm / hugetlb.h
1 #ifndef _ASM_SH_HUGETLB_H
2 #define _ASM_SH_HUGETLB_H
3
4 #include <asm/cacheflush.h>
5 #include <asm/page.h>
6 #include <asm-generic/hugetlb.h>
7
8
9 static inline int is_hugepage_only_range(struct mm_struct *mm,
10                                          unsigned long addr,
11                                          unsigned long len) {
12         return 0;
13 }
14
15 /*
16  * If the arch doesn't supply something else, assume that hugepage
17  * size aligned regions are ok without further preparation.
18  */
19 static inline int prepare_hugepage_range(struct file *file,
20                         unsigned long addr, unsigned long len)
21 {
22         if (len & ~HPAGE_MASK)
23                 return -EINVAL;
24         if (addr & ~HPAGE_MASK)
25                 return -EINVAL;
26         return 0;
27 }
28
29 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
30 }
31
32 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
33                                           unsigned long addr, unsigned long end,
34                                           unsigned long floor,
35                                           unsigned long ceiling)
36 {
37         free_pgd_range(tlb, addr, end, floor, ceiling);
38 }
39
40 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
41                                    pte_t *ptep, pte_t pte)
42 {
43         set_pte_at(mm, addr, ptep, pte);
44 }
45
46 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
47                                             unsigned long addr, pte_t *ptep)
48 {
49         return ptep_get_and_clear(mm, addr, ptep);
50 }
51
52 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
53                                          unsigned long addr, pte_t *ptep)
54 {
55 }
56
57 static inline int huge_pte_none(pte_t pte)
58 {
59         return pte_none(pte);
60 }
61
62 static inline pte_t huge_pte_wrprotect(pte_t pte)
63 {
64         return pte_wrprotect(pte);
65 }
66
67 static 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
73 static 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
80 static inline pte_t huge_ptep_get(pte_t *ptep)
81 {
82         return *ptep;
83 }
84
85 static inline int arch_prepare_hugepage(struct page *page)
86 {
87         return 0;
88 }
89
90 static inline void arch_release_hugepage(struct page *page)
91 {
92 }
93
94 static inline void arch_clear_hugepage_flags(struct page *page)
95 {
96         clear_bit(PG_dcache_clean, &page->flags);
97 }
98
99 #endif /* _ASM_SH_HUGETLB_H */