In slab, all __xxx_track_caller is defined on CONFIG_DEBUG_SLAB || CONFIG_TRACING, thus caller tracking function should be worked for CONFIG_TRACING. But if CONFIG_DEBUG_SLAB is not set, include/linux/slab.h will define xxx_track_caller to __xxx() without consideration of CONFIG_TRACING. This will break the caller tracking behaviour then. Signed-off-by: Xiaotian Feng <dfeng@xxxxxxxxxx> Cc: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx> Cc: Pekka Enberg <penberg@xxxxxxxxxxxxxx> Cc: Matt Mackall <mpm@xxxxxxxxxxx> Cc: Vegard Nossum <vegard.nossum@xxxxxxxxx> Cc: Dmitry Monakhov <dmonakhov@xxxxxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> --- include/linux/slab.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/slab.h b/include/linux/slab.h index 4884462..1a0625c 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -267,7 +267,7 @@ static inline void *kmem_cache_alloc_node(struct kmem_cache *cachep, * allocator where we care about the real place the memory allocation * request comes from. */ -#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) +#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || defined(CONFIG_TRACING) extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long); #define kmalloc_track_caller(size, flags) \ __kmalloc_track_caller(size, flags, _RET_IP_) @@ -285,7 +285,7 @@ extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long); * standard allocator where we care about the real place the memory * allocation request comes from. */ -#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) +#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB) || defined(CONFIG_TRACING) extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long); #define kmalloc_node_track_caller(size, flags, node) \ __kmalloc_node_track_caller(size, flags, node, \ -- 1.7.0.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>