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