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
   9 static 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  */
  19 static 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
  29 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
  30 }
  31
  32 static 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
  40 static 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
  46 static 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
  52 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  53                                          unsigned long addr, pte_t *ptep)
  54 {
  55 }
  56
  57 static inline int huge_pte_none(pte_t pte)
  58 {
  59         return pte_none(pte);
  60 }
  61
  62 static inline pte_t huge_pte_wrprotect(pte_t pte)
  63 {
  64         return pte_wrprotect(pte);
  65 }
  66
  67 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
  68                                            unsigned long addr, pte_t *ptep)
  69 {
  70         ptep_set_wrprotect(mm, addr, ptep);
  71 }
  72
  73 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
  74                                              unsigned long addr, pte_t *ptep,
  75                                              pte_t pte, int dirty)
  76 {
  77         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
  78 }
  79
  80 static inline pte_t huge_ptep_get(pte_t *ptep)
  81 {
  82         return *ptep;
  83 }
  84
  85 static inline int arch_prepare_hugepage(struct page *page)
  86 {
  87         return 0;
  88 }
  89
  90 static inline void arch_release_hugepage(struct page *page)
  91 {
  92 }
  93
  94 static inline void arch_clear_hugepage_flags(struct page *page)
  95 {
  96         clear_bit(PG_dcache_clean, &page->flags);
  97 }
  98
  99 #endif /* _ASM_SH_HUGETLB_H */