| 1 |
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| 2 | #ifndef _ASM_GENERIC_CACHEFLUSH_H
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| 3 | #define _ASM_GENERIC_CACHEFLUSH_H
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| 4 |
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| 5 | #include <linux/instrumented.h>
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| 6 |
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| 7 | struct mm_struct;
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| 8 | struct vm_area_struct;
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| 9 | struct page;
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| 10 | struct address_space;
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| 11 |
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| 12 | |
| 13 | * The cache doesn't need to be flushed when TLB entries change when
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| 14 | * the cache is mapped to physical memory, not virtual memory
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| 15 |
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| 16 | #ifndef flush_cache_all
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| 17 | static inline void flush_cache_all(void)
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| 18 | {
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| 19 | }
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| 20 | #endif
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| 21 |
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| 22 | #ifndef flush_cache_mm
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| 23 | static inline void flush_cache_mm(struct mm_struct *mm)
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| 24 | {
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| 25 | }
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| 26 | #endif
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| 27 |
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| 28 | #ifndef flush_cache_dup_mm
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| 29 | static inline void flush_cache_dup_mm(struct mm_struct *mm)
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| 30 | {
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| 31 | }
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| 32 | #endif
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| 33 |
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| 34 | #ifndef flush_cache_range
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| 35 | static inline void flush_cache_range(struct vm_area_struct *vma,
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| 36 | unsigned long start,
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| 37 | unsigned long end)
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| 38 | {
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| 39 | }
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| 40 | #endif
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| 41 |
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| 42 | #ifndef flush_cache_page
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| 43 | static inline void flush_cache_page(struct vm_area_struct *vma,
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| 44 | unsigned long vmaddr,
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| 45 | unsigned long pfn)
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| 46 | {
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| 47 | }
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| 48 | #endif
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| 49 |
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| 50 | #ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
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| 51 | static inline void flush_dcache_page(struct page *page)
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| 52 | {
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| 53 | }
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| 54 |
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| 55 | #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
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| 56 | #endif
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| 57 |
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| 58 | #ifndef flush_dcache_mmap_lock
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| 59 | static inline void flush_dcache_mmap_lock(struct address_space *mapping)
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| 60 | {
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| 61 | }
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| 62 | #endif
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| 63 |
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| 64 | #ifndef flush_dcache_mmap_unlock
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| 65 | static inline void flush_dcache_mmap_unlock(struct address_space *mapping)
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| 66 | {
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| 67 | }
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| 68 | #endif
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| 69 |
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| 70 | #ifndef flush_icache_range
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| 71 | static inline void flush_icache_range(unsigned long start, unsigned long end)
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| 72 | {
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| 73 | }
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| 74 | #endif
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| 75 |
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| 76 | #ifndef flush_icache_user_range
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| 77 | #define flush_icache_user_range flush_icache_range
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| 78 | #endif
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| 79 |
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| 80 | #ifndef flush_icache_user_page
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| 81 | static inline void flush_icache_user_page(struct vm_area_struct *vma,
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| 82 | struct page *page,
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| 83 | unsigned long addr, int len)
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| 84 | {
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| 85 | }
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| 86 | #endif
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| 87 |
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| 88 | #ifndef flush_cache_vmap
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| 89 | static inline void flush_cache_vmap(unsigned long start, unsigned long end)
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| 90 | {
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| 91 | }
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| 92 | #endif
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| 93 |
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| 94 | #ifndef flush_cache_vmap_early
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| 95 | static inline void flush_cache_vmap_early(unsigned long start, unsigned long end)
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| 96 | {
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| 97 | }
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| 98 | #endif
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| 99 |
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| 100 | #ifndef flush_cache_vunmap
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| 101 | static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
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| 102 | {
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| 103 | }
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| 104 | #endif
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| 105 |
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| 106 | #ifndef copy_to_user_page
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| 107 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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| 108 | do { \
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| 109 | instrument_copy_to_user((void __user *)dst, src, len); \
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| 110 | memcpy(dst, src, len); \
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| 111 | flush_icache_user_page(vma, page, vaddr, len); \
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| 112 | } while (0)
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| 113 | #endif
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| 114 |
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| 115 |
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| 116 | #ifndef copy_from_user_page
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| 117 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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| 118 | do { \
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| 119 | instrument_copy_from_user_before(dst, (void __user *)src, \
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| 120 | len); \
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| 121 | memcpy(dst, src, len); \
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| 122 | instrument_copy_from_user_after(dst, (void __user *)src, len, \
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| 123 | 0); \
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| 124 | } while (0)
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| 125 | #endif
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| 126 |
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| 127 | #endif
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