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Message-ID: <20081210182721.30323.55530.stgit@pc1117.cambridge.arm.com>
Date: Wed, 10 Dec 2008 18:27:21 +0000
From: Catalin Marinas <catalin.marinas@....com>
To: linux-kernel@...r.kernel.org
Cc: Pekka Enberg <penberg@...helsinki.fi>,
Christoph Lameter <cl@...ux-foundation.org>
Subject: [PATCH 05/15] kmemleak: Add the slub memory allocation/freeing hooks
This patch adds the callbacks to memleak_(alloc|free) functions from the
slub allocator.
Signed-off-by: Catalin Marinas <catalin.marinas@....com>
Cc: Christoph Lameter <cl@...ux-foundation.org>
Cc: Pekka Enberg <penberg@...helsinki.fi>
---
mm/slub.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 749588a..d9b07cb 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -18,6 +18,7 @@
#include <linux/seq_file.h>
#include <linux/cpu.h>
#include <linux/cpuset.h>
+#include <linux/memleak.h>
#include <linux/mempolicy.h>
#include <linux/ctype.h>
#include <linux/debugobjects.h>
@@ -140,7 +141,7 @@
* Set of flags that will prevent slab merging
*/
#define SLUB_NEVER_MERGE (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \
- SLAB_TRACE | SLAB_DESTROY_BY_RCU)
+ SLAB_TRACE | SLAB_DESTROY_BY_RCU | SLAB_NOLEAKTRACE)
#define SLUB_MERGE_SAME (SLAB_DEBUG_FREE | SLAB_RECLAIM_ACCOUNT | \
SLAB_CACHE_DMA)
@@ -1608,6 +1609,7 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
if (unlikely((gfpflags & __GFP_ZERO) && object))
memset(object, 0, objsize);
+ memleak_alloc_recursive(object, objsize, 1, s->flags, gfpflags);
return object;
}
@@ -1710,6 +1712,7 @@ static __always_inline void slab_free(struct kmem_cache *s,
struct kmem_cache_cpu *c;
unsigned long flags;
+ memleak_free_recursive(x, s->flags);
local_irq_save(flags);
c = get_cpu_slab(s, smp_processor_id());
debug_check_no_locks_freed(object, c->objsize);
--
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