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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2014-10-10 02:26:02 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-10 06:25:50 +0400
commit61f47105a2c9c60e950ca808b7560f776f9bfa31 (patch)
tree10bbc7fb213285e1e673073eedf21a1991a22ea1 /mm/slab.c
parent07f361b2bee38896df8be17d8c3f8af3f3610606 (diff)
downloadlinux-61f47105a2c9c60e950ca808b7560f776f9bfa31.tar.xz
mm/sl[ao]b: always track caller in kmalloc_(node_)track_caller()
Now, we track caller if tracing or slab debugging is enabled. If they are disabled, we could save one argument passing overhead by calling __kmalloc(_node)(). But, I think that it would be marginal. Furthermore, default slab allocator, SLUB, doesn't use this technique so I think that it's okay to change this situation. After this change, we can turn on/off CONFIG_DEBUG_SLAB without full kernel build and remove some complicated '#if' defintion. It looks more benefitial to me. Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.c')
-rw-r--r--mm/slab.c18
1 files changed, 0 insertions, 18 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 7c52b3890d25..c52bc5aa6ba0 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3496,7 +3496,6 @@ __do_kmalloc_node(size_t size, gfp_t flags, int node, unsigned long caller)
return kmem_cache_alloc_node_trace(cachep, flags, node, size);
}
-#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING)
void *__kmalloc_node(size_t size, gfp_t flags, int node)
{
return __do_kmalloc_node(size, flags, node, _RET_IP_);
@@ -3509,13 +3508,6 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t flags,
return __do_kmalloc_node(size, flags, node, caller);
}
EXPORT_SYMBOL(__kmalloc_node_track_caller);
-#else
-void *__kmalloc_node(size_t size, gfp_t flags, int node)
-{
- return __do_kmalloc_node(size, flags, node, 0);
-}
-EXPORT_SYMBOL(__kmalloc_node);
-#endif /* CONFIG_DEBUG_SLAB || CONFIG_TRACING */
#endif /* CONFIG_NUMA */
/**
@@ -3541,8 +3533,6 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags,
return ret;
}
-
-#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING)
void *__kmalloc(size_t size, gfp_t flags)
{
return __do_kmalloc(size, flags, _RET_IP_);
@@ -3555,14 +3545,6 @@ void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller)
}
EXPORT_SYMBOL(__kmalloc_track_caller);
-#else
-void *__kmalloc(size_t size, gfp_t flags)
-{
- return __do_kmalloc(size, flags, 0);
-}
-EXPORT_SYMBOL(__kmalloc);
-#endif
-
/**
* kmem_cache_free - Deallocate an object
* @cachep: The cache the allocation was from.