linux-kernel - Re: kernel: smp: WARNING at kernel/smp.c:673

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Message-ID: <53DFD3DA.4060302@oracle.com>
Date:	Mon, 04 Aug 2014 14:41:30 -0400
From:	Sasha Levin <sasha.levin@...cle.com>
To:	Christoph Lameter <cl@...two.org>, Tejun Heo <htejun@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>, Matt Mackall <mpm@...enic.com>,
	Gilad Ben-Yossef <gilad@...yossef.com>,
	Jens Axboe <axboe@...com>, Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: kernel: smp: WARNING at kernel/smp.c:673

On 08/04/2014 12:00 PM, Christoph Lameter wrote:
> On Mon, 4 Aug 2014, Tejun Heo wrote:
> 
>>> Yuck. I meant cgroup code. There were some patches that were suggesting a
>>> shrink operation when taking down a cgroup. Does that also apply to per
>>> cpu downing?
>>
>> Heh, I have no idea what you're talking about.  cgroup currently
>> doesn't do anything like that.  It doesn't even make use of the cpu
>> hotplug hooks.
> 
> Something is running a kmem_cache_shrink from cpu down hooks. Thats weird.
> 

That's not cpu down, that's mem down.


Thanks,
Sasha
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