tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_POWERPC_HUGETLB_H
2#define _ASM_POWERPC_HUGETLB_H
3
4#include <asm/page.h>
5
6
7int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
8 unsigned long len);
9
10void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
11 unsigned long end, unsigned long floor,
12 unsigned long ceiling);
13
14void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
15 pte_t *ptep, pte_t pte);
16
17pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
18 pte_t *ptep);
19
20/*
21 * If the arch doesn't supply something else, assume that hugepage
22 * size aligned regions are ok without further preparation.
23 */
24static inline int prepare_hugepage_range(struct file *file,
25 unsigned long addr, unsigned long len)
26{
27 struct hstate *h = hstate_file(file);
28 if (len & ~huge_page_mask(h))
29 return -EINVAL;
30 if (addr & ~huge_page_mask(h))
31 return -EINVAL;
32 return 0;
33}
34
35static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
36{
37}
38
39static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
40 unsigned long addr, pte_t *ptep)
41{
42}
43
44static inline int huge_pte_none(pte_t pte)
45{
46 return pte_none(pte);
47}
48
49static inline pte_t huge_pte_wrprotect(pte_t pte)
50{
51 return pte_wrprotect(pte);
52}
53
54static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
55 unsigned long addr, pte_t *ptep,
56 pte_t pte, int dirty)
57{
58 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
59}
60
61static inline pte_t huge_ptep_get(pte_t *ptep)
62{
63 return *ptep;
64}
65
66static inline int arch_prepare_hugepage(struct page *page)
67{
68 return 0;
69}
70
71static inline void arch_release_hugepage(struct page *page)
72{
73}
74
75#endif /* _ASM_POWERPC_HUGETLB_H */