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| author | Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> | 2008-08-24 20:49:35 +0300 |
|---|---|---|
| committer | Pekka Enberg <penberg@cs.helsinki.fi> | 2008-12-29 15:34:12 +0200 |
| commit | 94b528d0564997d88e8bf166d8c9080536ad8bdc (patch) | |
| tree | 257c157b40ce0384bff93640d2cfbb56d875d229 /mm/slub.c | |
| parent | 73cd6af0413225b0ada8b8881c3e0cfd26506dfa (diff) | |
| download | lwn-94b528d0564997d88e8bf166d8c9080536ad8bdc.tar.gz lwn-94b528d0564997d88e8bf166d8c9080536ad8bdc.zip | |
kmemtrace: SLUB hooks for caller-tracking functions.
This patch adds kmemtrace hooks for __kmalloc_track_caller() and
__kmalloc_node_track_caller(). Currently, they set the call site pointer
to the value recieved as a parameter. (This could change if we implement
stack trace exporting in kmemtrace.)
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'mm/slub.c')
| -rw-r--r-- | mm/slub.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/mm/slub.c b/mm/slub.c index 4c48a0146afd..4ce61c86f581 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3256,6 +3256,7 @@ static struct notifier_block __cpuinitdata slab_notifier = { void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller) { struct kmem_cache *s; + void *ret; if (unlikely(size > PAGE_SIZE)) return kmalloc_large(size, gfpflags); @@ -3265,13 +3266,20 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller) if (unlikely(ZERO_OR_NULL_PTR(s))) return s; - return slab_alloc(s, gfpflags, -1, caller); + ret = slab_alloc(s, gfpflags, -1, caller); + + /* Honor the call site pointer we recieved. */ + kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, (unsigned long) caller, + ret, size, s->size, gfpflags); + + return ret; } void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, int node, unsigned long caller) { struct kmem_cache *s; + void *ret; if (unlikely(size > PAGE_SIZE)) return kmalloc_large_node(size, gfpflags, node); @@ -3281,7 +3289,14 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags, if (unlikely(ZERO_OR_NULL_PTR(s))) return s; - return slab_alloc(s, gfpflags, node, caller); + ret = slab_alloc(s, gfpflags, node, caller); + + /* Honor the call site pointer we recieved. */ + kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC, + (unsigned long) caller, ret, + size, s->size, gfpflags, node); + + return ret; } #ifdef CONFIG_SLUB_DEBUG |