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Subject[PATCH 05/15] kmemleak: Add the slub memory allocation/freeing hooks
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This patch adds the callbacks to memleak_(alloc|free) functions from the
slub allocator.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Pekka Enberg <penberg@gmail.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
---
mm/slub.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 7ad489a..b683571 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);
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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