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hugetlb.h
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1 #ifndef _ASM_SPARC64_HUGETLB_H
2 #define _ASM_SPARC64_HUGETLB_H
3 
4 #include <asm/page.h>
5 
6 
7 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
8  pte_t *ptep, pte_t pte);
9 
10 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
11  pte_t *ptep);
12 
13 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
14 {
15  hugetlb_setup(mm);
16 }
17 
18 static inline int is_hugepage_only_range(struct mm_struct *mm,
19  unsigned long addr,
20  unsigned long len) {
21  return 0;
22 }
23 
24 /*
25  * If the arch doesn't supply something else, assume that hugepage
26  * size aligned regions are ok without further preparation.
27  */
28 static inline int prepare_hugepage_range(struct file *file,
29  unsigned long addr, unsigned long len)
30 {
31  if (len & ~HPAGE_MASK)
32  return -EINVAL;
33  if (addr & ~HPAGE_MASK)
34  return -EINVAL;
35  return 0;
36 }
37 
38 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
39  unsigned long addr, unsigned long end,
40  unsigned long floor,
41  unsigned long ceiling)
42 {
43  free_pgd_range(tlb, addr, end, floor, ceiling);
44 }
45 
46 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
47  unsigned long addr, pte_t *ptep)
48 {
49 }
50 
51 static inline int huge_pte_none(pte_t pte)
52 {
53  return pte_none(pte);
54 }
55 
56 static inline pte_t huge_pte_wrprotect(pte_t pte)
57 {
58  return pte_wrprotect(pte);
59 }
60 
61 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
62  unsigned long addr, pte_t *ptep)
63 {
64  ptep_set_wrprotect(mm, addr, ptep);
65 }
66 
67 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
68  unsigned long addr, pte_t *ptep,
69  pte_t pte, int dirty)
70 {
71  return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
72 }
73 
74 static inline pte_t huge_ptep_get(pte_t *ptep)
75 {
76  return *ptep;
77 }
78 
79 static inline int arch_prepare_hugepage(struct page *page)
80 {
81  return 0;
82 }
83 
84 static inline void arch_release_hugepage(struct page *page)
85 {
86 }
87 
88 static inline void arch_clear_hugepage_flags(struct page *page)
89 {
90 }
91 
92 #endif /* _ASM_SPARC64_HUGETLB_H */
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