LXR linux/arch/sh/include/asm/hugetlb.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_SH_HUGETLB_H
   3#define _ASM_SH_HUGETLB_H
   4
   5#include <asm/cacheflush.h>
   6#include <asm/page.h>
   7#include <asm-generic/hugetlb.h>
   8
   9
  10static inline int is_hugepage_only_range(struct mm_struct *mm,
  11                                         unsigned long addr,
  12                                         unsigned long len) {
  13        return 0;
  14}
  15
  16/*
  17 * If the arch doesn't supply something else, assume that hugepage
  18 * size aligned regions are ok without further preparation.
  19 */
  20static inline int prepare_hugepage_range(struct file *file,
  21                        unsigned long addr, unsigned long len)
  22{
  23        if (len & ~HPAGE_MASK)
  24                return -EINVAL;
  25        if (addr & ~HPAGE_MASK)
  26                return -EINVAL;
  27        return 0;
  28}
  29
  30static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
  31                                          unsigned long addr, unsigned long end,
  32                                          unsigned long floor,
  33                                          unsigned long ceiling)
  34{
  35        free_pgd_range(tlb, addr, end, floor, ceiling);
  36}
  37
  38static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
  39                                   pte_t *ptep, pte_t pte)
  40{
  41        set_pte_at(mm, addr, ptep, pte);
  42}
  43
  44static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
  45                                            unsigned long addr, pte_t *ptep)
  46{
  47        return ptep_get_and_clear(mm, addr, ptep);
  48}
  49
  50static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
  51                                         unsigned long addr, pte_t *ptep)
  52{
  53}
  54
  55static inline int huge_pte_none(pte_t pte)
  56{
  57        return pte_none(pte);
  58}
  59
  60static inline pte_t huge_pte_wrprotect(pte_t pte)
  61{
  62        return pte_wrprotect(pte);
  63}
  64
  65static 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
  71static 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
  78static inline pte_t huge_ptep_get(pte_t *ptep)
  79{
  80        return *ptep;
  81}
  82
  83static inline void arch_clear_hugepage_flags(struct page *page)
  84{
  85        clear_bit(PG_dcache_clean, &page->flags);
  86}
  87
  88#endif /* _ASM_SH_HUGETLB_H */
  89