linux-kernel - Re: [PATCH] SLAB: Record actual last user of freed objects.

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Date:	Fri, 3 Jun 2011 09:05:06 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	David Rientjes <rientjes@...gle.com>
cc:	Suleiman Souhlal <ssouhlal@...ebsd.org>, penberg@...nel.org,
	suleiman@...gle.com, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, mpm@...enic.com
Subject: Re: [PATCH] SLAB: Record actual last user of freed objects.

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@...gle.com>
>
> Acked-by: David Rientjes <rientjes@...gle.com>

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

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

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