tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_SH_HUGETLB_H
2#define _ASM_SH_HUGETLB_H
3
4#include <asm/cacheflush.h>
5#include <asm/page.h>
6
7
8static inline int is_hugepage_only_range(struct mm_struct *mm,
9 unsigned long addr,
10 unsigned long len) {
11 return 0;
12}
13
14/*
15 * If the arch doesn't supply something else, assume that hugepage
16 * size aligned regions are ok without further preparation.
17 */
18static inline int prepare_hugepage_range(struct file *file,
19 unsigned long addr, unsigned long len)
20{
21 if (len & ~HPAGE_MASK)
22 return -EINVAL;
23 if (addr & ~HPAGE_MASK)
24 return -EINVAL;
25 return 0;
26}
27
28static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
29}
30
31static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
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
51static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
52 unsigned long addr, pte_t *ptep)
53{
54}
55
56static inline int huge_pte_none(pte_t pte)
57{
58 return pte_none(pte);
59}
60
61static inline pte_t huge_pte_wrprotect(pte_t pte)
62{
63 return pte_wrprotect(pte);
64}
65
66static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
67 unsigned long addr, pte_t *ptep)
68{
69 ptep_set_wrprotect(mm, addr, ptep);
70}
71
72static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
73 unsigned long addr, pte_t *ptep,
74 pte_t pte, int dirty)
75{
76 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
77}
78
79static inline pte_t huge_ptep_get(pte_t *ptep)
80{
81 return *ptep;
82}
83
84static inline int arch_prepare_hugepage(struct page *page)
85{
86 return 0;
87}
88
89static inline void arch_release_hugepage(struct page *page)
90{
91}
92
93static inline void arch_clear_hugepage_flags(struct page *page)
94{
95 clear_bit(PG_dcache_clean, &page->flags);
96}
97
98#endif /* _ASM_SH_HUGETLB_H */