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android_kernel_...
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arch
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powerpc
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include
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asm
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hugetlb.h

hugetlb.h 2.2 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. #ifndef _ASM_POWERPC_HUGETLB_H
    3. 

  3. #define _ASM_POWERPC_HUGETLB_H
    4. 

  4. 

  5. #ifdef CONFIG_HUGETLB_PAGE
    6. 

  6. #include <asm/page.h>
    7. 

  7. 

  8. #ifdef CONFIG_PPC_BOOK3S_64
    9. 

  9. #include <asm/book3s/64/hugetlb.h>
    10. 

  10. #elif defined(CONFIG_PPC_E500)
    11. 

  11. #include <asm/nohash/hugetlb-e500.h>
    12. 

  12. #elif defined(CONFIG_PPC_8xx)
    13. 

  13. #include <asm/nohash/32/hugetlb-8xx.h>
    14. 

  14. #endif /* CONFIG_PPC_BOOK3S_64 */
    15. 

  15. 

  16. extern bool hugetlb_disabled;
    17. 

  17. 

  18. void __init hugetlbpage_init_defaultsize(void);
    19. 

  19. 

  20. int slice_is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
    21. 

  21. 			   unsigned long len);
    22. 

  22. 

  23. static inline int is_hugepage_only_range(struct mm_struct *mm,
    24. 

  24. 					 unsigned long addr,
    25. 

  25. 					 unsigned long len)
    26. 

  26. {
    27. 

  27. 	if (IS_ENABLED(CONFIG_PPC_64S_HASH_MMU) && !radix_enabled())
    28. 

  28. 		return slice_is_hugepage_only_range(mm, addr, len);
    29. 

  29. 	return 0;
    30. 

  30. }
    31. 

  31. #define is_hugepage_only_range is_hugepage_only_range
    32. 

  32. 

  33. #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
    34. 

  34. void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
    35. 

  35. 			    unsigned long end, unsigned long floor,
    36. 

  36. 			    unsigned long ceiling);
    37. 

  37. 

  38. #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
    39. 

  39. static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
    40. 

  40. 					    unsigned long addr, pte_t *ptep)
    41. 

  41. {
    42. 

  42. 	return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 1));
    43. 

  43. }
    44. 

  44. 

  45. #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
    46. 

  46. static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
    47. 

  47. 					  unsigned long addr, pte_t *ptep)
    48. 

  48. {
    49. 

  49. 	pte_t pte;
    50. 

  50. 

  51. 	pte = huge_ptep_get_and_clear(vma->vm_mm, addr, ptep);
    52. 

  52. 	flush_hugetlb_page(vma, addr);
    53. 

  53. 	return pte;
    54. 

  54. }
    55. 

  55. 

  56. #define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
    57. 

  57. int huge_ptep_set_access_flags(struct vm_area_struct *vma,
    58. 

  58. 			       unsigned long addr, pte_t *ptep,
    59. 

  59. 			       pte_t pte, int dirty);
    60. 

  60. 

  61. void gigantic_hugetlb_cma_reserve(void) __init;
    62. 

  62. #include <asm-generic/hugetlb.h>
    63. 

  63. 

  64. #else /* ! CONFIG_HUGETLB_PAGE */
    65. 

  65. static inline void flush_hugetlb_page(struct vm_area_struct *vma,
    66. 

  66. 				      unsigned long vmaddr)
    67. 

  67. {
    68. 

  68. }
    69. 

  69. 

  70. #define hugepd_shift(x) 0
    71. 

  71. static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
    72. 

  72. 				    unsigned pdshift)
    73. 

  73. {
    74. 

  74. 	return NULL;
    75. 

  75. }
    76. 

  76. 

  77. 

  78. static inline void __init gigantic_hugetlb_cma_reserve(void)
    79. 

  79. {
    80. 

  80. }
    81. 

  81. 

  82. static inline void __init hugetlbpage_init_defaultsize(void)
    83. 

  83. {
    84. 

  84. }
    85. 

  85. #endif /* CONFIG_HUGETLB_PAGE */
    86. 

  86. 

  87. #endif /* _ASM_POWERPC_HUGETLB_H */
    88.