projects / linux-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); | |
| 17 | void __page_table_check_pte_clear(struct mm_struct *mm, unsigned long addr, | |
| 18 | pte_t pte); | |
| 19 | void __page_table_check_pmd_clear(struct mm_struct *mm, unsigned long addr, | |
| 20 | pmd_t pmd); | |
| 21 | void __page_table_check_pud_clear(struct mm_struct *mm, unsigned long addr, | |
| 22 | pud_t pud); | |
| 23 | void __page_table_check_pte_set(struct mm_struct *mm, unsigned long addr, | |
| 24 | pte_t *ptep, pte_t pte); | |
| 25 | void __page_table_check_pmd_set(struct mm_struct *mm, unsigned long addr, | |
| 26 | pmd_t *pmdp, pmd_t pmd); | |
| 27 | void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr, | |
| 28 | pud_t *pudp, pud_t pud); | |
| 80110bbf PT |
29 | void __page_table_check_pte_clear_range(struct mm_struct *mm, |
| 30 | unsigned long addr, | |
| 31 | pmd_t pmd); | |
| df4e817b PT |
32 | |
| 33 | static inline void page_table_check_alloc(struct page *page, unsigned int order) | |
| 34 | { | |
| 35 | if (static_branch_likely(&page_table_check_disabled)) | |
| 36 | return; | |
| 37 | ||
| 38 | __page_table_check_zero(page, order); | |
| 39 | } | |
| 40 | ||
| 41 | static inline void page_table_check_free(struct page *page, unsigned int order) | |
| 42 | { | |
| 43 | if (static_branch_likely(&page_table_check_disabled)) | |
| 44 | return; | |
| 45 | ||
| 46 | __page_table_check_zero(page, order); | |
| 47 | } | |
| 48 | ||
| 49 | static inline void page_table_check_pte_clear(struct mm_struct *mm, | |
| 50 | unsigned long addr, pte_t pte) | |
| 51 | { | |
| 52 | if (static_branch_likely(&page_table_check_disabled)) | |
| 53 | return; | |
| 54 | ||
| 55 | __page_table_check_pte_clear(mm, addr, pte); | |
| 56 | } | |
| 57 | ||
| 58 | static inline void page_table_check_pmd_clear(struct mm_struct *mm, | |
| 59 | unsigned long addr, pmd_t pmd) | |
| 60 | { | |
| 61 | if (static_branch_likely(&page_table_check_disabled)) | |
| 62 | return; | |
| 63 | ||
| 64 | __page_table_check_pmd_clear(mm, addr, pmd); | |
| 65 | } | |
| 66 | ||
| 67 | static inline void page_table_check_pud_clear(struct mm_struct *mm, | |
| 68 | unsigned long addr, pud_t pud) | |
| 69 | { | |
| 70 | if (static_branch_likely(&page_table_check_disabled)) | |
| 71 | return; | |
| 72 | ||
| 73 | __page_table_check_pud_clear(mm, addr, pud); | |
| 74 | } | |
| 75 | ||
| 76 | static inline void page_table_check_pte_set(struct mm_struct *mm, | |
| 77 | unsigned long addr, pte_t *ptep, | |
| 78 | pte_t pte) | |
| 79 | { | |
| 80 | if (static_branch_likely(&page_table_check_disabled)) | |
| 81 | return; | |
| 82 | ||
| 83 | __page_table_check_pte_set(mm, addr, ptep, pte); | |
| 84 | } | |
| 85 | ||
| 86 | static inline void page_table_check_pmd_set(struct mm_struct *mm, | |
| 87 | unsigned long addr, pmd_t *pmdp, | |
| 88 | pmd_t pmd) | |
| 89 | { | |
| 90 | if (static_branch_likely(&page_table_check_disabled)) | |
| 91 | return; | |
| 92 | ||
| 93 | __page_table_check_pmd_set(mm, addr, pmdp, pmd); | |
| 94 | } | |
| 95 | ||
| 96 | static inline void page_table_check_pud_set(struct mm_struct *mm, | |
| 97 | unsigned long addr, pud_t *pudp, | |
| 98 | pud_t pud) | |
| 99 | { | |
| 100 | if (static_branch_likely(&page_table_check_disabled)) | |
| 101 | return; | |
| 102 | ||
| 103 | __page_table_check_pud_set(mm, addr, pudp, pud); | |
| 104 | } | |
| 105 | ||
| 80110bbf PT |
106 | static inline void page_table_check_pte_clear_range(struct mm_struct *mm, |
| 107 | unsigned long addr, | |
| 108 | pmd_t pmd) | |
| 109 | { | |
| 110 | if (static_branch_likely(&page_table_check_disabled)) | |
| 111 | return; | |
| 112 | ||
| 113 | __page_table_check_pte_clear_range(mm, addr, pmd); | |
| 114 | } | |
| 115 | ||
| df4e817b PT |
116 | #else |
| 117 | ||
| 118 | static inline void page_table_check_alloc(struct page *page, unsigned int order) | |
| 119 | { | |
| 120 | } | |
| 121 | ||
| 122 | static inline void page_table_check_free(struct page *page, unsigned int order) | |
| 123 | { | |
| 124 | } | |
| 125 | ||
| 126 | static inline void page_table_check_pte_clear(struct mm_struct *mm, | |
| 127 | unsigned long addr, pte_t pte) | |
| 128 | { | |
| 129 | } | |
| 130 | ||
| 131 | static inline void page_table_check_pmd_clear(struct mm_struct *mm, | |
| 132 | unsigned long addr, pmd_t pmd) | |
| 133 | { | |
| 134 | } | |
| 135 | ||
| 136 | static inline void page_table_check_pud_clear(struct mm_struct *mm, | |
| 137 | unsigned long addr, pud_t pud) | |
| 138 | { | |
| 139 | } | |
| 140 | ||
| 141 | static inline void page_table_check_pte_set(struct mm_struct *mm, | |
| 142 | unsigned long addr, pte_t *ptep, | |
| 143 | pte_t pte) | |
| 144 | { | |
| 145 | } | |
| 146 | ||
| 147 | static inline void page_table_check_pmd_set(struct mm_struct *mm, | |
| 148 | unsigned long addr, pmd_t *pmdp, | |
| 149 | pmd_t pmd) | |
| 150 | { | |
| 151 | } | |
| 152 | ||
| 153 | static inline void page_table_check_pud_set(struct mm_struct *mm, | |
| 154 | unsigned long addr, pud_t *pudp, | |
| 155 | pud_t pud) | |
| 156 | { | |
| 157 | } | |
| 158 | ||
| 80110bbf PT |
159 | static inline void page_table_check_pte_clear_range(struct mm_struct *mm, |
| 160 | unsigned long addr, | |
| 161 | pmd_t pmd) | |
| 162 | { | |
| 163 | } | |
| 164 | ||
| df4e817b PT |
165 | #endif /* CONFIG_PAGE_TABLE_CHECK */ |
| 166 | #endif /* __LINUX_PAGE_TABLE_CHECK_H */ |