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kmemleak: Add the slub memory allocation/freeing hooks 

This patch adds the callbacks to kmemleak_(alloc|free) functions from the
slub allocator.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
This commit is contained in:
Catalin Marinas 2009-06-11 13:23:18 +01:00
parent 4374e616d2
commit 06f22f13f3
1 changed files with 4 additions and 1 deletions
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5
mm/slub.c
View File

@ -20,6 +20,7 @@
#include <linux/kmemtrace.h> #include <linux/kmemtrace.h>
#include <linux/cpu.h> #include <linux/cpu.h>
#include <linux/cpuset.h> #include <linux/cpuset.h>
#include <linux/kmemleak.h>
#include <linux/mempolicy.h> #include <linux/mempolicy.h>
#include <linux/ctype.h> #include <linux/ctype.h>
#include <linux/debugobjects.h> #include <linux/debugobjects.h>
@ -143,7 +144,7 @@
* Set of flags that will prevent slab merging * Set of flags that will prevent slab merging
*/ */
#define SLUB_NEVER_MERGE (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ #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 | \ #define SLUB_MERGE_SAME (SLAB_DEBUG_FREE | SLAB_RECLAIM_ACCOUNT | \
SLAB_CACHE_DMA) SLAB_CACHE_DMA)
@ -1617,6 +1618,7 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
if (unlikely((gfpflags & __GFP_ZERO) && object)) if (unlikely((gfpflags & __GFP_ZERO) && object))
memset(object, 0, objsize); memset(object, 0, objsize);
kmemleak_alloc_recursive(object, objsize, 1, s->flags, gfpflags);
return object; return object;
} }
@ -1746,6 +1748,7 @@ static __always_inline void slab_free(struct kmem_cache *s,
struct kmem_cache_cpu *c; struct kmem_cache_cpu *c;
unsigned long flags; unsigned long flags;
kmemleak_free_recursive(x, s->flags);
local_irq_save(flags); local_irq_save(flags);
c = get_cpu_slab(s, smp_processor_id()); c = get_cpu_slab(s, smp_processor_id());
debug_check_no_locks_freed(object, c->objsize); debug_check_no_locks_freed(object, c->objsize);