projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| df4e817b PT |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | ||
| 3 | /* | |
| 4 | * Copyright (c) 2021, Google LLC. | |
| 5 | * Pasha Tatashin <pasha.tatashin@soleen.com> | |
| 6 | */ | |
| 7 | #ifndef __LINUX_PAGE_TABLE_CHECK_H | |
| 8 | #define __LINUX_PAGE_TABLE_CHECK_H | |
| 9 | ||
| 10 | #ifdef CONFIG_PAGE_TABLE_CHECK | |
| 11 | #include <linux/jump_label.h> | |
| 12 | ||
| 13 | extern struct static_key_true page_table_check_disabled; | |
| 14 | extern struct page_ext_operations page_table_check_ops; | |
| 15 | ||
| 16 | void __page_table_check_zero(struct page *page, unsigned int order); | |
| aa232204 | 17 | void __page_table_check_pte_clear(struct mm_struct *mm, pte_t pte); |
| 1831414c | 18 | void __page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd); |
| 931c38e1 | 19 | void __page_table_check_pud_clear(struct mm_struct *mm, pud_t pud); |
| a3793220 MWO |
20 | void __page_table_check_ptes_set(struct mm_struct *mm, pte_t *ptep, pte_t pte, |
| 21 | unsigned int nr); | |
| a3b83713 | 22 | void __page_table_check_pmd_set(struct mm_struct *mm, pmd_t *pmdp, pmd_t pmd); |
| 6d144436 | 23 | void __page_table_check_pud_set(struct mm_struct *mm, pud_t *pudp, pud_t pud); |
| 80110bbf PT |
24 | void __page_table_check_pte_clear_range(struct mm_struct *mm, |
| 25 | unsigned long addr, | |
| 26 | pmd_t pmd); | |
| df4e817b PT |
27 | |
| 28 | static inline void page_table_check_alloc(struct page *page, unsigned int order) | |
| 29 | { | |
| 30 | if (static_branch_likely(&page_table_check_disabled)) | |
| 31 | return; | |
| 32 | ||
| 33 | __page_table_check_zero(page, order); | |
| 34 | } | |
| 35 | ||
| 36 | static inline void page_table_check_free(struct page *page, unsigned int order) | |
| 37 | { | |
| 38 | if (static_branch_likely(&page_table_check_disabled)) | |
| 39 | return; | |
| 40 | ||
| 41 | __page_table_check_zero(page, order); | |
| 42 | } | |
| 43 | ||
| aa232204 | 44 | static inline void page_table_check_pte_clear(struct mm_struct *mm, pte_t pte) |
| df4e817b PT |
45 | { |
| 46 | if (static_branch_likely(&page_table_check_disabled)) | |
| 47 | return; | |
| 48 | ||
| aa232204 | 49 | __page_table_check_pte_clear(mm, pte); |
| df4e817b PT |
50 | } |
| 51 | ||
| 1831414c | 52 | static inline void page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd) |
| df4e817b PT |
53 | { |
| 54 | if (static_branch_likely(&page_table_check_disabled)) | |
| 55 | return; | |
| 56 | ||
| 1831414c | 57 | __page_table_check_pmd_clear(mm, pmd); |
| df4e817b PT |
58 | } |
| 59 | ||
| 931c38e1 | 60 | static inline void page_table_check_pud_clear(struct mm_struct *mm, pud_t pud) |
| df4e817b PT |
61 | { |
| 62 | if (static_branch_likely(&page_table_check_disabled)) | |
| 63 | return; | |
| 64 | ||
| 931c38e1 | 65 | __page_table_check_pud_clear(mm, pud); |
| df4e817b PT |
66 | } |
| 67 | ||
| a3793220 MWO |
68 | static inline void page_table_check_ptes_set(struct mm_struct *mm, |
| 69 | pte_t *ptep, pte_t pte, unsigned int nr) | |
| df4e817b PT |
70 | { |
| 71 | if (static_branch_likely(&page_table_check_disabled)) | |
| 72 | return; | |
| 73 | ||
| a3793220 | 74 | __page_table_check_ptes_set(mm, ptep, pte, nr); |
| df4e817b PT |
75 | } |
| 76 | ||
| a3b83713 | 77 | static inline void page_table_check_pmd_set(struct mm_struct *mm, pmd_t *pmdp, |
| df4e817b PT |
78 | pmd_t pmd) |
| 79 | { | |
| 80 | if (static_branch_likely(&page_table_check_disabled)) | |
| 81 | return; | |
| 82 | ||
| a3b83713 | 83 | __page_table_check_pmd_set(mm, pmdp, pmd); |
| df4e817b PT |
84 | } |
| 85 | ||
| 6d144436 | 86 | static inline void page_table_check_pud_set(struct mm_struct *mm, pud_t *pudp, |
| df4e817b PT |
87 | pud_t pud) |
| 88 | { | |
| 89 | if (static_branch_likely(&page_table_check_disabled)) | |
| 90 | return; | |
| 91 | ||
| 6d144436 | 92 | __page_table_check_pud_set(mm, pudp, pud); |
| df4e817b PT |
93 | } |
| 94 | ||
| 80110bbf PT |
95 | static inline void page_table_check_pte_clear_range(struct mm_struct *mm, |
| 96 | unsigned long addr, | |
| 97 | pmd_t pmd) | |
| 98 | { | |
| 99 | if (static_branch_likely(&page_table_check_disabled)) | |
| 100 | return; | |
| 101 | ||
| 102 | __page_table_check_pte_clear_range(mm, addr, pmd); | |
| 103 | } | |
| 104 | ||
| df4e817b PT |
105 | #else |
| 106 | ||
| 107 | static inline void page_table_check_alloc(struct page *page, unsigned int order) | |
| 108 | { | |
| 109 | } | |
| 110 | ||
| 111 | static inline void page_table_check_free(struct page *page, unsigned int order) | |
| 112 | { | |
| 113 | } | |
| 114 | ||
| aa232204 | 115 | static inline void page_table_check_pte_clear(struct mm_struct *mm, pte_t pte) |
| df4e817b PT |
116 | { |
| 117 | } | |
| 118 | ||
| 1831414c | 119 | static inline void page_table_check_pmd_clear(struct mm_struct *mm, pmd_t pmd) |
| df4e817b PT |
120 | { |
| 121 | } | |
| 122 | ||
| 931c38e1 | 123 | static inline void page_table_check_pud_clear(struct mm_struct *mm, pud_t pud) |
| df4e817b PT |
124 | { |
| 125 | } | |
| 126 | ||
| a3793220 MWO |
127 | static inline void page_table_check_ptes_set(struct mm_struct *mm, |
| 128 | pte_t *ptep, pte_t pte, unsigned int nr) | |
| df4e817b PT |
129 | { |
| 130 | } | |
| 131 | ||
| a3b83713 | 132 | static inline void page_table_check_pmd_set(struct mm_struct *mm, pmd_t *pmdp, |
| df4e817b PT |
133 | pmd_t pmd) |
| 134 | { | |
| 135 | } | |
| 136 | ||
| 6d144436 | 137 | static inline void page_table_check_pud_set(struct mm_struct *mm, pud_t *pudp, |
| df4e817b PT |
138 | pud_t pud) |
| 139 | { | |
| 140 | } | |
| 141 | ||
| 80110bbf PT |
142 | static inline void page_table_check_pte_clear_range(struct mm_struct *mm, |
| 143 | unsigned long addr, | |
| 144 | pmd_t pmd) | |
| 145 | { | |
| 146 | } | |
| 147 | ||
| df4e817b PT |
148 | #endif /* CONFIG_PAGE_TABLE_CHECK */ |
| 149 | #endif /* __LINUX_PAGE_TABLE_CHECK_H */ |