From d18a90dd85f8243ed20cdadb6d8a37d595df456d Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Thu, 7 Jul 2011 11:36:37 -0700 Subject: slub: Add method to verify memory is not freed This is for tracking down suspect memory usage. Acked-by: Christoph Lameter Signed-off-by: Ben Greear Signed-off-by: Pekka Enberg --- include/linux/slub_def.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux') diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index fd4fdc72bc8c..4b35c06dfbc5 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -218,6 +218,19 @@ kmalloc_order(size_t size, gfp_t flags, unsigned int order) return ret; } +/** + * Calling this on allocated memory will check that the memory + * is expected to be in use, and print warnings if not. + */ +#ifdef CONFIG_SLUB_DEBUG +extern bool verify_mem_not_deleted(const void *x); +#else +static inline bool verify_mem_not_deleted(const void *x) +{ + return true; +} +#endif + #ifdef CONFIG_TRACING extern void * kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size); -- cgit v1.2.3