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hugetlb.h

hugetlb.h 2.0 KB
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  1. #ifndef _ASM_SH_HUGETLB_H
    2. 

  2. #define _ASM_SH_HUGETLB_H
    3. 

  3. 

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

  5. 

  6. 

  7. static inline int is_hugepage_only_range(struct mm_struct *mm,
    8. 

  8. 					 unsigned long addr,
    9. 

  9. 					 unsigned long len) {
    10. 

  10. 	return 0;
    11. 

  11. }
    12. 

  12. 

  13. /*
    14. 

  14.  * If the arch doesn't supply something else, assume that hugepage
    15. 

  15.  * size aligned regions are ok without further preparation.
    16. 

  16.  */
    17. 

  17. static inline int prepare_hugepage_range(struct file *file,
    18. 

  18. 			unsigned long addr, unsigned long len)
    19. 

  19. {
    20. 

  20. 	if (len & ~HPAGE_MASK)
    21. 

  21. 		return -EINVAL;
    22. 

  22. 	if (addr & ~HPAGE_MASK)
    23. 

  23. 		return -EINVAL;
    24. 

  24. 	return 0;
    25. 

  25. }
    26. 

  26. 

  27. static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) {
    28. 

  28. }
    29. 

  29. 

  30. static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
    31. 

  31. 					  unsigned long addr, unsigned long end,
    32. 

  32. 					  unsigned long floor,
    33. 

  33. 					  unsigned long ceiling)
    34. 

  34. {
    35. 

  35. 	free_pgd_range(tlb, addr, end, floor, ceiling);
    36. 

  36. }
    37. 

  37. 

  38. static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
    39. 

  39. 				   pte_t *ptep, pte_t pte)
    40. 

  40. {
    41. 

  41. 	set_pte_at(mm, addr, ptep, pte);
    42. 

  42. }
    43. 

  43. 

  44. static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
    45. 

  45. 					    unsigned long addr, pte_t *ptep)
    46. 

  46. {
    47. 

  47. 	return ptep_get_and_clear(mm, addr, ptep);
    48. 

  48. }
    49. 

  49. 

  50. static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
    51. 

  51. 					 unsigned long addr, pte_t *ptep)
    52. 

  52. {
    53. 

  53. }
    54. 

  54. 

  55. static inline int huge_pte_none(pte_t pte)
    56. 

  56. {
    57. 

  57. 	return pte_none(pte);
    58. 

  58. }
    59. 

  59. 

  60. static inline pte_t huge_pte_wrprotect(pte_t pte)
    61. 

  61. {
    62. 

  62. 	return pte_wrprotect(pte);
    63. 

  63. }
    64. 

  64. 

  65. static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
    66. 

  66. 					   unsigned long addr, pte_t *ptep)
    67. 

  67. {
    68. 

  68. 	ptep_set_wrprotect(mm, addr, ptep);
    69. 

  69. }
    70. 

  70. 

  71. static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
    72. 

  72. 					     unsigned long addr, pte_t *ptep,
    73. 

  73. 					     pte_t pte, int dirty)
    74. 

  74. {
    75. 

  75. 	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
    76. 

  76. }
    77. 

  77. 

  78. static inline pte_t huge_ptep_get(pte_t *ptep)
    79. 

  79. {
    80. 

  80. 	return *ptep;
    81. 

  81. }
    82. 

  82. 

  83. static inline int arch_prepare_hugepage(struct page *page)
    84. 

  84. {
    85. 

  85. 	return 0;
    86. 

  86. }
    87. 

  87. 

  88. static inline void arch_release_hugepage(struct page *page)
    89. 

  89. {
    90. 

  90. }
    91. 

  91. 

  92. #endif /* _ASM_SH_HUGETLB_H */
    93. 

  93.