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d7002857de
This patch hooks into the DMA API to prevent the reporting of the false positives that would otherwise be reported when memory is accessed that is also used directly by devices. [rebased for mainline inclusion] Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
#ifndef LINUX_KMEMCHECK_H
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#define LINUX_KMEMCHECK_H
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#include <linux/mm_types.h>
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#include <linux/types.h>
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#ifdef CONFIG_KMEMCHECK
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extern int kmemcheck_enabled;
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/* The slab-related functions. */
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void kmemcheck_alloc_shadow(struct kmem_cache *s, gfp_t flags, int node,
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struct page *page, int order);
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void kmemcheck_free_shadow(struct kmem_cache *s, struct page *page, int order);
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void kmemcheck_slab_alloc(struct kmem_cache *s, gfp_t gfpflags, void *object,
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size_t size);
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void kmemcheck_slab_free(struct kmem_cache *s, void *object, size_t size);
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void kmemcheck_show_pages(struct page *p, unsigned int n);
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void kmemcheck_hide_pages(struct page *p, unsigned int n);
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bool kmemcheck_page_is_tracked(struct page *p);
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void kmemcheck_mark_unallocated(void *address, unsigned int n);
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void kmemcheck_mark_uninitialized(void *address, unsigned int n);
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void kmemcheck_mark_initialized(void *address, unsigned int n);
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void kmemcheck_mark_freed(void *address, unsigned int n);
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void kmemcheck_mark_unallocated_pages(struct page *p, unsigned int n);
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void kmemcheck_mark_uninitialized_pages(struct page *p, unsigned int n);
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int kmemcheck_show_addr(unsigned long address);
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int kmemcheck_hide_addr(unsigned long address);
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#else
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#define kmemcheck_enabled 0
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static inline void
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kmemcheck_alloc_shadow(struct kmem_cache *s, gfp_t flags, int node,
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struct page *page, int order)
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{
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}
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static inline void
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kmemcheck_free_shadow(struct kmem_cache *s, struct page *page, int order)
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{
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}
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static inline void
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kmemcheck_slab_alloc(struct kmem_cache *s, gfp_t gfpflags, void *object,
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size_t size)
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{
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}
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static inline void kmemcheck_slab_free(struct kmem_cache *s, void *object,
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size_t size)
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{
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}
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static inline bool kmemcheck_page_is_tracked(struct page *p)
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{
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return false;
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}
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static inline void kmemcheck_mark_unallocated(void *address, unsigned int n)
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{
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}
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static inline void kmemcheck_mark_uninitialized(void *address, unsigned int n)
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{
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}
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static inline void kmemcheck_mark_initialized(void *address, unsigned int n)
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{
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}
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static inline void kmemcheck_mark_freed(void *address, unsigned int n)
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{
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}
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#endif /* CONFIG_KMEMCHECK */
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#endif /* LINUX_KMEMCHECK_H */
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