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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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