1 /*
2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for
12 * more details.
13 */
14
15 #ifndef _ASM_TILE_HUGETLB_H
16 #define _ASM_TILE_HUGETLB_H
17
18 #include <asm/page.h>
19
20
is_hugepage_only_range(struct mm_struct * mm,unsigned long addr,unsigned long len)21 static inline int is_hugepage_only_range(struct mm_struct *mm,
22 unsigned long addr,
23 unsigned long len) {
24 return 0;
25 }
26
27 /*
28 * If the arch doesn't supply something else, assume that hugepage
29 * size aligned regions are ok without further preparation.
30 */
prepare_hugepage_range(struct file * file,unsigned long addr,unsigned long len)31 static inline int prepare_hugepage_range(struct file *file,
32 unsigned long addr, unsigned long len)
33 {
34 struct hstate *h = hstate_file(file);
35 if (len & ~huge_page_mask(h))
36 return -EINVAL;
37 if (addr & ~huge_page_mask(h))
38 return -EINVAL;
39 return 0;
40 }
41
hugetlb_prefault_arch_hook(struct mm_struct * mm)42 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
43 {
44 }
45
hugetlb_free_pgd_range(struct mmu_gather * tlb,unsigned long addr,unsigned long end,unsigned long floor,unsigned long ceiling)46 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
47 unsigned long addr, unsigned long end,
48 unsigned long floor,
49 unsigned long ceiling)
50 {
51 free_pgd_range(tlb, addr, end, floor, ceiling);
52 }
53
set_huge_pte_at(struct mm_struct * mm,unsigned long addr,pte_t * ptep,pte_t pte)54 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
55 pte_t *ptep, pte_t pte)
56 {
57 set_pte(ptep, pte);
58 }
59
huge_ptep_get_and_clear(struct mm_struct * mm,unsigned long addr,pte_t * ptep)60 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
61 unsigned long addr, pte_t *ptep)
62 {
63 return ptep_get_and_clear(mm, addr, ptep);
64 }
65
huge_ptep_clear_flush(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep)66 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
67 unsigned long addr, pte_t *ptep)
68 {
69 ptep_clear_flush(vma, addr, ptep);
70 }
71
huge_pte_none(pte_t pte)72 static inline int huge_pte_none(pte_t pte)
73 {
74 return pte_none(pte);
75 }
76
huge_pte_wrprotect(pte_t pte)77 static inline pte_t huge_pte_wrprotect(pte_t pte)
78 {
79 return pte_wrprotect(pte);
80 }
81
huge_ptep_set_wrprotect(struct mm_struct * mm,unsigned long addr,pte_t * ptep)82 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
83 unsigned long addr, pte_t *ptep)
84 {
85 ptep_set_wrprotect(mm, addr, ptep);
86 }
87
huge_ptep_set_access_flags(struct vm_area_struct * vma,unsigned long addr,pte_t * ptep,pte_t pte,int dirty)88 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
89 unsigned long addr, pte_t *ptep,
90 pte_t pte, int dirty)
91 {
92 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
93 }
94
huge_ptep_get(pte_t * ptep)95 static inline pte_t huge_ptep_get(pte_t *ptep)
96 {
97 return *ptep;
98 }
99
arch_prepare_hugepage(struct page * page)100 static inline int arch_prepare_hugepage(struct page *page)
101 {
102 return 0;
103 }
104
arch_release_hugepage(struct page * page)105 static inline void arch_release_hugepage(struct page *page)
106 {
107 }
108
109 #endif /* _ASM_TILE_HUGETLB_H */
110