linux-kernel - Re: [PATCH v3] mm: SLAB Out-of-memory diagnostics

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Message-ID: <CAOJsxLHX5bU03t32ONDeuT2pq88FLAQpw7DtAxTGL8Qe0_wFzg@mail.gmail.com>
Date:	Fri, 9 Mar 2012 22:33:39 +0200
From:	Pekka Enberg <penberg@...nel.org>
To:	Rafael Aquini <aquini@...hat.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Matt Mackall <mpm@...enic.com>, Rik van Riel <riel@...hat.com>,
	Josef Bacik <josef@...hat.com>,
	David Rientjes <rientjes@...gle.com>,
	Cong Wang <xiyou.wangcong@...il.com>
Subject: Re: [PATCH v3] mm: SLAB Out-of-memory diagnostics

On Fri, Mar 9, 2012 at 10:27 PM, Rafael Aquini <aquini@...hat.com> wrote:
> Following the example at mm/slub.c, add out-of-memory diagnostics to the
> SLAB allocator to help on debugging certain OOM conditions.
>
> An example print out looks like this:
>
>  <snip page allocator out-of-memory message>
>  SLAB: Unable to allocate memory on node 0 (gfp=0x11200)
>    cache: bio-0, object size: 192, order: 0
>    node 0: slabs: 3/3, objs: 60/60, free: 0
>
> Signed-off-by: Rafael Aquini <aquini@...hat.com>
> Acked-by: Rik van Riel <riel@...hat.com>

David?
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