Date: Fri, 3 Jun 2011 09:05:06 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
To: David Rientjes <rientjes@google.com>
cc: Suleiman Souhlal <ssouhlal@freebsd.org>, penberg@kernel.org,
        suleiman@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        mpm@selenic.com
Subject: Re: [PATCH] SLAB: Record actual last user of freed objects.
In-Reply-To: <alpine.DEB.2.00.1106021011510.18350@chino.kir.corp.google.com>
Message-ID: <alpine.DEB.2.00.1106030904320.27151@router.home>
References: <1306999002-29738-1-git-send-email-ssouhlal@FreeBSD.org> <alpine.DEB.2.00.1106021011510.18350@chino.kir.corp.google.com>
User-Agent: Alpine 2.00 (DEB 1167 2008-08-23)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 788
Lines: 22

On Thu, 2 Jun 2011, David Rientjes wrote:

> On Thu, 2 Jun 2011, Suleiman Souhlal wrote:
>
> > Currently, when using CONFIG_DEBUG_SLAB, we put in kfree() or
> > kmem_cache_free() as the last user of free objects, which is not
> > very useful, so change it to the caller of those functions instead.
> >
> > Signed-off-by: Suleiman Souhlal <suleiman@google.com>
>
> Acked-by: David Rientjes <rientjes@google.com>

Well note that this increases the overhead of a hot code path. But slub
does the same

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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/