LXR linux/arch/x86/include/asm/hugetlb.h

   1#ifndef _ASM_X86_HUGETLB_H
   2#define _ASM_X86_HUGETLB_H
   3
   4#include <asm/page.h>
   5#include <asm-generic/hugetlb.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        struct hstate *h = hstate_file(file);
  22        if (len & ~huge_page_mask(h))
  23                return -EINVAL;
  24        if (addr & ~huge_page_mask(h))
  25                return -EINVAL;
  26        return 0;
  27}
  28
  29static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
  30}
  31
  32static 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
  40static 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
  46static 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
  52static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  53                                         unsigned long addr, pte_t *ptep)
  54{
  55        ptep_clear_flush(vma, addr, ptep);
  56}
  57
  58static inline int huge_pte_none(pte_t pte)
  59{
  60        return pte_none(pte);
  61}
  62
  63static inline pte_t huge_pte_wrprotect(pte_t pte)
  64{
  65        return pte_wrprotect(pte);
  66}
  67
  68static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  69                                           unsigned long addr, pte_t *ptep)
  70{
  71        ptep_set_wrprotect(mm, addr, ptep);
  72}
  73
  74static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  75                                             unsigned long addr, pte_t *ptep,
  76                                             pte_t pte, int dirty)
  77{
  78        return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
  79}
  80
  81static inline pte_t huge_ptep_get(pte_t *ptep)
  82{
  83        return *ptep;
  84}
  85
  86static inline int arch_prepare_hugepage(struct page *page)
  87{
  88        return 0;
  89}
  90
  91static inline void arch_release_hugepage(struct page *page)
  92{
  93}
  94
  95static inline void arch_clear_hugepage_flags(struct page *page)
  96{
  97}
  98
  99#endif /* _ASM_X86_HUGETLB_H */
 100