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Linux/arch/x86/include/asm/hugetlb.h

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  1 #ifndef _ASM_X86_HUGETLB_H
  2 #define _ASM_X86_HUGETLB_H
  3 
  4 #include <asm/page.h>
  5 #include <asm-generic/hugetlb.h>
  6 
  7 
  8 static inline int is_hugepage_only_range(struct mm_struct *mm,
  9                                          unsigned long addr,
 10                                          unsigned long len) {
 11         return 0;
 12 }
 13 
 14 /*
 15  * If the arch doesn't supply something else, assume that hugepage
 16  * size aligned regions are ok without further preparation.
 17  */
 18 static inline int prepare_hugepage_range(struct file *file,
 19                         unsigned long addr, unsigned long len)
 20 {
 21         struct hstate *h = hstate_file(file);
 22         if (len & ~huge_page_mask(h))
 23                 return -EINVAL;
 24         if (addr & ~huge_page_mask(h))
 25                 return -EINVAL;
 26         return 0;
 27 }
 28 
 29 static 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 
 37 static 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 
 43 static 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 
 49 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 50                                          unsigned long addr, pte_t *ptep)
 51 {
 52         ptep_clear_flush(vma, addr, ptep);
 53 }
 54 
 55 static inline int huge_pte_none(pte_t pte)
 56 {
 57         return pte_none(pte);
 58 }
 59 
 60 static inline pte_t huge_pte_wrprotect(pte_t pte)
 61 {
 62         return pte_wrprotect(pte);
 63 }
 64 
 65 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 66                                            unsigned long addr, pte_t *ptep)
 67 {
 68         ptep_set_wrprotect(mm, addr, ptep);
 69 }
 70 
 71 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 72                                              unsigned long addr, pte_t *ptep,
 73                                              pte_t pte, int dirty)
 74 {
 75         return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
 76 }
 77 
 78 static inline pte_t huge_ptep_get(pte_t *ptep)
 79 {
 80         return *ptep;
 81 }
 82 
 83 static inline void arch_clear_hugepage_flags(struct page *page)
 84 {
 85 }
 86 
 87 #endif /* _ASM_X86_HUGETLB_H */
 88 

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