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

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