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Date: Wed, 24 Oct 2012 11:56:23 +0300 From: Pekka Enberg <penberg@...nel.org> To: Glauber Costa <glommer@...allels.com> Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org, Christoph Lameter <cl@...ux.com>, David Rientjes <rientjes@...gle.com> Subject: Re: [PATCH 2/2] slab: move kmem_cache_free to common code On Mon, Oct 22, 2012 at 5:05 PM, Glauber Costa <glommer@...allels.com> wrote: > +/** > + * kmem_cache_free - Deallocate an object > + * @cachep: The cache the allocation was from. > + * @objp: The previously allocated object. > + * > + * Free an object which was previously allocated from this > + * cache. > + */ > +void kmem_cache_free(struct kmem_cache *s, void *x) > +{ > + __kmem_cache_free(s, x); > + trace_kmem_cache_free(_RET_IP_, x); > +} > +EXPORT_SYMBOL(kmem_cache_free); As Christoph mentioned, this is going to hurt performance. The proper way to do this is to implement the *hook* in mm/slab_common.c and call that from all the allocator specific kmem_cache_free() functions. Pekka -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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