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hugetlb.h

hugetlb.h 1.9 KB
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  1. #ifndef _ASM_SH_HUGETLB_H
    2. 

  2. #define _ASM_SH_HUGETLB_H
    3. 

  3. 

  4. #include <asm/cacheflush.h>
    5. 

  5. #include <asm/page.h>
    6. 

  6. #include <asm-generic/hugetlb.h>
    7. 

  7. 

  8. 

  9. static inline int is_hugepage_only_range(struct mm_struct *mm,
    10. 

  10. 					 unsigned long addr,
    11. 

  11. 					 unsigned long len) {
    12. 

  12. 	return 0;
    13. 

  13. }
    14. 

  14. 

  15. /*
    16. 

  16.  * If the arch doesn't supply something else, assume that hugepage
    17. 

  17.  * size aligned regions are ok without further preparation.
    18. 

  18.  */
    19. 

  19. static inline int prepare_hugepage_range(struct file *file,
    20. 

  20. 			unsigned long addr, unsigned long len)
    21. 

  21. {
    22. 

  22. 	if (len & ~HPAGE_MASK)
    23. 

  23. 		return -EINVAL;
    24. 

  24. 	if (addr & ~HPAGE_MASK)
    25. 

  25. 		return -EINVAL;
    26. 

  26. 	return 0;
    27. 

  27. }
    28. 

  28. 

  29. static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
    30. 

  30. 					  unsigned long addr, unsigned long end,
    31. 

  31. 					  unsigned long floor,
    32. 

  32. 					  unsigned long ceiling)
    33. 

  33. {
    34. 

  34. 	free_pgd_range(tlb, addr, end, floor, ceiling);
    35. 

  35. }
    36. 

  36. 

  37. static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
    38. 

  38. 				   pte_t *ptep, pte_t pte)
    39. 

  39. {
    40. 

  40. 	set_pte_at(mm, addr, ptep, pte);
    41. 

  41. }
    42. 

  42. 

  43. static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
    44. 

  44. 					    unsigned long addr, pte_t *ptep)
    45. 

  45. {
    46. 

  46. 	return ptep_get_and_clear(mm, addr, ptep);
    47. 

  47. }
    48. 

  48. 

  49. static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
    50. 

  50. 					 unsigned long addr, pte_t *ptep)
    51. 

  51. {
    52. 

  52. }
    53. 

  53. 

  54. static inline int huge_pte_none(pte_t pte)
    55. 

  55. {
    56. 

  56. 	return pte_none(pte);
    57. 

  57. }
    58. 

  58. 

  59. static inline pte_t huge_pte_wrprotect(pte_t pte)
    60. 

  60. {
    61. 

  61. 	return pte_wrprotect(pte);
    62. 

  62. }
    63. 

  63. 

  64. static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
    65. 

  65. 					   unsigned long addr, pte_t *ptep)
    66. 

  66. {
    67. 

  67. 	ptep_set_wrprotect(mm, addr, ptep);
    68. 

  68. }
    69. 

  69. 

  70. static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
    71. 

  71. 					     unsigned long addr, pte_t *ptep,
    72. 

  72. 					     pte_t pte, int dirty)
    73. 

  73. {
    74. 

  74. 	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
    75. 

  75. }
    76. 

  76. 

  77. static inline pte_t huge_ptep_get(pte_t *ptep)
    78. 

  78. {
    79. 

  79. 	return *ptep;
    80. 

  80. }
    81. 

  81. 

  82. static inline void arch_clear_hugepage_flags(struct page *page)
    83. 

  83. {
    84. 

  84. 	clear_bit(PG_dcache_clean, &page->flags);
    85. 

  85. }
    86. 

  86. 

  87. #endif /* _ASM_SH_HUGETLB_H */
    88.