linux-kernel - Re: [RT LATENCY] 249 microsecond latency caused by slub's unfreeze

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Message-ID: <5167AE42.1040308@kernel.org>
Date:	Fri, 12 Apr 2013 09:48:34 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Christoph Lameter <cl@...ux.com>
CC:	Steven Rostedt <rostedt@...dmis.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Clark Williams <clark@...hat.com>
Subject: Re: [RT LATENCY] 249 microsecond latency caused by slub's unfreeze_partials()
 code.

Hello,

On 04/11/2013 07:42 PM, Christoph Lameter wrote:
> On Thu, 11 Apr 2013, Steven Rostedt wrote:
>
>> I was wondering if you made any more forward progress with with patch
>> yet. When it goes into mainline, I'd like to backport it to the -rt
>> stable trees, and will probably make it enabled by default when
>> PREEMPT_RT is enabled.
>
> Sorry I did not get around to it yet. Also waiting for Joonsoo's patch to
> be merged first. Which tree may I use Pekka?

https://github.com/penberg/linux/commits/slab/next

and

https://git.kernel.org/cgit/linux/kernel/git/penberg/linux.git/log/?h=slab/next

are the same and include what I've queued for 3.10.

I'm waiting for a new version of Joonsoon's patch to appear.

			Pekka
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