include/asm-powerpc/hugetlb.h

   1 #ifndef _ASM_POWERPC_HUGETLB_H
   2 #define _ASM_POWERPC_HUGETLB_H
   3
   4 #include <asm/page.h>
   5
   6
   7 int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
   8                            unsigned long len);
   9
  10 void hugetlb_free_pgd_range(struct mmu_gather **tlb, unsigned long addr,
  11                             unsigned long end, unsigned long floor,
  12                             unsigned long ceiling);
  13
  14 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
  15                      pte_t *ptep, pte_t pte);
  16
  17 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
  18                               pte_t *ptep);
  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(unsigned long addr, unsigned long len)
  25 {
  26         if (len & ~HPAGE_MASK)
  27                 return -EINVAL;
  28         if (addr & ~HPAGE_MASK)
  29                 return -EINVAL;
  30         return 0;
  31 }
  32
  33 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
  34 {
  35 }
  36
  37 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  38                                          unsigned long addr, pte_t *ptep)
  39 {
  40 }
  41
  42 #endif /* _ASM_POWERPC_HUGETLB_H */