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

   1#ifndef _ASM_SPARC64_HUGETLB_H
   2#define _ASM_SPARC64_HUGETLB_H
   3
   4#include <asm/page.h>
   5
   6
   7void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
   8                     pte_t *ptep, pte_t pte);
   9
  10pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
  11                              pte_t *ptep);
  12
  13void hugetlb_prefault_arch_hook(struct mm_struct *mm);
  14
  15static inline int is_hugepage_only_range(struct mm_struct *mm,
  16                                         unsigned long addr,
  17                                         unsigned long len) {
  18        return 0;
  19}
  20
  21/*
  22 * If the arch doesn't supply something else, assume that hugepage
  23 * size aligned regions are ok without further preparation.
  24 */
  25static inline int prepare_hugepage_range(struct file *file,
  26                        unsigned long addr, unsigned long len)
  27{
  28        if (len & ~HPAGE_MASK)
  29                return -EINVAL;
  30        if (addr & ~HPAGE_MASK)
  31                return -EINVAL;
  32        return 0;
  33}
  34
  35static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
  36                                          unsigned long addr, unsigned long end,
  37                                          unsigned long floor,
  38                                          unsigned long ceiling)
  39{
  40        free_pgd_range(tlb, addr, end, floor, ceiling);
  41}
  42
  43static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  44                                         unsigned long addr, pte_t *ptep)
  45{
  46}
  47
  48static inline int huge_pte_none(pte_t pte)
  49{
  50        return pte_none(pte);
  51}
  52
  53static inline pte_t huge_pte_wrprotect(pte_t pte)
  54{
  55        return pte_wrprotect(pte);
  56}
  57
  58static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  59                                           unsigned long addr, pte_t *ptep)
  60{
  61        ptep_set_wrprotect(mm, addr, ptep);
  62}
  63
  64static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  65                                             unsigned long addr, pte_t *ptep,
  66                                             pte_t pte, int dirty)
  67{
  68        return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
  69}
  70
  71static inline pte_t huge_ptep_get(pte_t *ptep)
  72{
  73        return *ptep;
  74}
  75
  76static inline int arch_prepare_hugepage(struct page *page)
  77{
  78        return 0;
  79}
  80
  81static inline void arch_release_hugepage(struct page *page)
  82{
  83}
  84
  85#endif /* _ASM_SPARC64_HUGETLB_H */
  86