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    SubjectRe: linux-next: Tree for August 25 (mm/slub)
    On Wed, 25 Aug 2010, Randy Dunlap wrote:

    > mm/slub.c:1732: error: implicit declaration of function 'slab_pre_alloc_hook'
    > mm/slub.c:1751: error: implicit declaration of function 'slab_post_alloc_hook'
    > mm/slub.c:1881: error: implicit declaration of function 'slab_free_hook'
    > mm/slub.c:1886: error: implicit declaration of function 'slab_free_hook_irq'

    Empty functions are missing if the runtime debuggability option is
    compiled
    out.


    Subject: slub: Add dummy functions for the !SLUB_DEBUG case

    Provide the fall back functions to empty hooks if SLUB_DEBUG is not set.

    Signed-off-by: Christoph Lameter <cl@linux.com>

    ---
    mm/slub.c | 12 ++++++++++++
    1 file changed, 12 insertions(+)

    Index: linux-2.6/mm/slub.c
    ===================================================================
    --- linux-2.6.orig/mm/slub.c 2010-08-25 14:02:43.000000000 -0500
    +++ linux-2.6/mm/slub.c 2010-08-25 14:04:23.000000000 -0500
    @@ -1098,6 +1098,18 @@ static inline void inc_slabs_node(struct
    int objects) {}
    static inline void dec_slabs_node(struct kmem_cache *s, int node,
    int objects) {}
    +
    +static inline int slab_pre_alloc_hook(struct kmem_cache *s, gfp_t flags)
    + { return 0; }
    +
    +static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags,
    + void *object) {}
    +
    +static inline void slab_free_hook(struct kmem_cache *s, void *x) {}
    +
    +static inline void slab_free_hook_irq(struct kmem_cache *s,
    + void *object) {}
    +
    #endif

    /*

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