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
   7 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
   8                      pte_t *ptep, pte_t pte);
   9
  10 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
  11                               pte_t *ptep);
  12
  13 void hugetlb_prefault_arch_hook(struct mm_struct *mm);
  14
  15 static 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  */
  25 static 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
  35 static 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
  43 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  44                                          unsigned long addr, pte_t *ptep)
  45 {
  46 }
  47
  48 static inline int huge_pte_none(pte_t pte)
  49 {
  50         return pte_none(pte);
  51 }
  52
  53 static inline pte_t huge_pte_wrprotect(pte_t pte)
  54 {
  55         return pte_wrprotect(pte);
  56 }
  57
  58 static 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
  64 static 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
  71 static inline pte_t huge_ptep_get(pte_t *ptep)
  72 {
  73         return *ptep;
  74 }
  75
  76 static inline int arch_prepare_hugepage(struct page *page)
  77 {
  78         return 0;
  79 }
  80
  81 static inline void arch_release_hugepage(struct page *page)
  82 {
  83 }
  84
  85 #endif /* _ASM_SPARC64_HUGETLB_H */