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hugetlb.h

hugetlb.h 1.8 KB
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  1. #ifndef _ASM_SPARC64_HUGETLB_H
    2. 

  2. #define _ASM_SPARC64_HUGETLB_H
    3. 

  3. 

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

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

  6. 

  7. 

  8. void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
    9. 

  9. 		     pte_t *ptep, pte_t pte);
    10. 

  10. 

  11. pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
    12. 

  12. 			      pte_t *ptep);
    13. 

  13. 

  14. static inline int is_hugepage_only_range(struct mm_struct *mm,
    15. 

  15. 					 unsigned long addr,
    16. 

  16. 					 unsigned long len) {
    17. 

  17. 	return 0;
    18. 

  18. }
    19. 

  19. 

  20. /*
    21. 

  21.  * If the arch doesn't supply something else, assume that hugepage
    22. 

  22.  * size aligned regions are ok without further preparation.
    23. 

  23.  */
    24. 

  24. static inline int prepare_hugepage_range(struct file *file,
    25. 

  25. 			unsigned long addr, unsigned long len)
    26. 

  26. {
    27. 

  27. 	if (len & ~HPAGE_MASK)
    28. 

  28. 		return -EINVAL;
    29. 

  29. 	if (addr & ~HPAGE_MASK)
    30. 

  30. 		return -EINVAL;
    31. 

  31. 	return 0;
    32. 

  32. }
    33. 

  33. 

  34. static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
    35. 

  35. 					 unsigned long addr, pte_t *ptep)
    36. 

  36. {
    37. 

  37. }
    38. 

  38. 

  39. static inline int huge_pte_none(pte_t pte)
    40. 

  40. {
    41. 

  41. 	return pte_none(pte);
    42. 

  42. }
    43. 

  43. 

  44. static inline pte_t huge_pte_wrprotect(pte_t pte)
    45. 

  45. {
    46. 

  46. 	return pte_wrprotect(pte);
    47. 

  47. }
    48. 

  48. 

  49. static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
    50. 

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

  51. {
    52. 

  52. 	pte_t old_pte = *ptep;
    53. 

  53. 	set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
    54. 

  54. }
    55. 

  55. 

  56. static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
    57. 

  57. 					     unsigned long addr, pte_t *ptep,
    58. 

  58. 					     pte_t pte, int dirty)
    59. 

  59. {
    60. 

  60. 	int changed = !pte_same(*ptep, pte);
    61. 

  61. 	if (changed) {
    62. 

  62. 		set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
    63. 

  63. 		flush_tlb_page(vma, addr);
    64. 

  64. 	}
    65. 

  65. 	return changed;
    66. 

  66. }
    67. 

  67. 

  68. static inline pte_t huge_ptep_get(pte_t *ptep)
    69. 

  69. {
    70. 

  70. 	return *ptep;
    71. 

  71. }
    72. 

  72. 

  73. static inline void arch_clear_hugepage_flags(struct page *page)
    74. 

  74. {
    75. 

  75. }
    76. 

  76. 

  77. void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
    78. 

  78. 			    unsigned long end, unsigned long floor,
    79. 

  79. 			    unsigned long ceiling);
    80. 

  80. 

  81. #endif /* _ASM_SPARC64_HUGETLB_H */
    82.