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[PATCH] slab: fix kzalloc and kstrdup caller report for CONFIG_DEBUG_SLAB

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Fix kzalloc() and kstrdup() caller report for CONFIG_DEBUG_SLAB.  We must
pass the caller to __cache_alloc() instead of directly doing
__builtin_return_address(0) there; otherwise kzalloc() and kstrdup() are
reported as the allocation site instead of the real one.

Thanks to Valdis Kletnieks for reporting the problem and Steven Rostedt for
the original idea.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Pekka Enberg
2006-02-01 03:05:52 -08:00
committed by Linus Torvalds
parent b958f7d9f3
commit 7fd6b14130
2 changed files with 31 additions and 5 deletions
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7
include/linux/slab.h
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@ -76,7 +76,14 @@ struct cache_sizes {
kmem_cache_t *cs_dmacachep;
};
extern struct cache_sizes malloc_sizes[];
#ifndef CONFIG_DEBUG_SLAB
extern void *__kmalloc(size_t, gfp_t);
#else
extern void *__kmalloc_track_caller(size_t, gfp_t, void*);
#define __kmalloc(size, flags) \
__kmalloc_track_caller(size, flags, __builtin_return_address(0))
#endif
static inline void *kmalloc(size_t size, gfp_t flags)
{