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include/linux/kmemcheck.h
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#ifndef LINUX_KMEMCHECK_H #define LINUX_KMEMCHECK_H #include <linux/mm_types.h> #include <linux/types.h> #ifdef CONFIG_KMEMCHECK extern int kmemcheck_enabled; |
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/* The slab-related functions. */ |
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void kmemcheck_alloc_shadow(struct page *page, int order, gfp_t flags, int node); void kmemcheck_free_shadow(struct page *page, int order); |
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void kmemcheck_slab_alloc(struct kmem_cache *s, gfp_t gfpflags, void *object, size_t size); void kmemcheck_slab_free(struct kmem_cache *s, void *object, size_t size); |
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void kmemcheck_pagealloc_alloc(struct page *p, unsigned int order, gfp_t gfpflags); |
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void kmemcheck_show_pages(struct page *p, unsigned int n); void kmemcheck_hide_pages(struct page *p, unsigned int n); bool kmemcheck_page_is_tracked(struct page *p); void kmemcheck_mark_unallocated(void *address, unsigned int n); void kmemcheck_mark_uninitialized(void *address, unsigned int n); void kmemcheck_mark_initialized(void *address, unsigned int n); void kmemcheck_mark_freed(void *address, unsigned int n); void kmemcheck_mark_unallocated_pages(struct page *p, unsigned int n); void kmemcheck_mark_uninitialized_pages(struct page *p, unsigned int n); |
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void kmemcheck_mark_initialized_pages(struct page *p, unsigned int n); |
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int kmemcheck_show_addr(unsigned long address); int kmemcheck_hide_addr(unsigned long address); |
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bool kmemcheck_is_obj_initialized(unsigned long addr, size_t size); |
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/* * Bitfield annotations * * How to use: If you have a struct using bitfields, for example * * struct a { * int x:8, y:8; * }; * * then this should be rewritten as * * struct a { * kmemcheck_bitfield_begin(flags); * int x:8, y:8; * kmemcheck_bitfield_end(flags); * }; * * Now the "flags_begin" and "flags_end" members may be used to refer to the * beginning and end, respectively, of the bitfield (and things like * &x.flags_begin is allowed). As soon as the struct is allocated, the bit- * fields should be annotated: * * struct a *a = kmalloc(sizeof(struct a), GFP_KERNEL); * kmemcheck_annotate_bitfield(a, flags); */ #define kmemcheck_bitfield_begin(name) \ int name##_begin[0]; #define kmemcheck_bitfield_end(name) \ int name##_end[0]; #define kmemcheck_annotate_bitfield(ptr, name) \ do { \ int _n; \ \ if (!ptr) \ break; \ \ _n = (long) &((ptr)->name##_end) \ - (long) &((ptr)->name##_begin); \ MAYBE_BUILD_BUG_ON(_n < 0); \ \ kmemcheck_mark_initialized(&((ptr)->name##_begin), _n); \ } while (0) #define kmemcheck_annotate_variable(var) \ do { \ kmemcheck_mark_initialized(&(var), sizeof(var)); \ } while (0) \ |
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#else #define kmemcheck_enabled 0 |
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static inline void |
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kmemcheck_alloc_shadow(struct page *page, int order, gfp_t flags, int node) |
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{ } static inline void |
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kmemcheck_free_shadow(struct page *page, int order) |
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{ } static inline void kmemcheck_slab_alloc(struct kmem_cache *s, gfp_t gfpflags, void *object, size_t size) { } static inline void kmemcheck_slab_free(struct kmem_cache *s, void *object, size_t size) { } |
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static inline void kmemcheck_pagealloc_alloc(struct page *p, unsigned int order, gfp_t gfpflags) { } |
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static inline bool kmemcheck_page_is_tracked(struct page *p) { return false; } |
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static inline void kmemcheck_mark_unallocated(void *address, unsigned int n) { } static inline void kmemcheck_mark_uninitialized(void *address, unsigned int n) { } static inline void kmemcheck_mark_initialized(void *address, unsigned int n) { } static inline void kmemcheck_mark_freed(void *address, unsigned int n) { } |
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static inline void kmemcheck_mark_unallocated_pages(struct page *p, unsigned int n) { } static inline void kmemcheck_mark_uninitialized_pages(struct page *p, unsigned int n) { } static inline void kmemcheck_mark_initialized_pages(struct page *p, unsigned int n) { } |
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static inline bool kmemcheck_is_obj_initialized(unsigned long addr, size_t size) { return true; } |
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#define kmemcheck_bitfield_begin(name) #define kmemcheck_bitfield_end(name) #define kmemcheck_annotate_bitfield(ptr, name) \ do { \ } while (0) |
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#define kmemcheck_annotate_variable(var) \ do { \ |
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} while (0) |
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#endif /* CONFIG_KMEMCHECK */ |
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#endif /* LINUX_KMEMCHECK_H */ |