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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 11 Apr 2013 12:05:07 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	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>,
	Pekka Enberg <penberg@...nel.org>
Subject: Re: [RT LATENCY] 249 microsecond latency caused by slub's
 unfreeze_partials() code.

On Thu, 2013-03-28 at 17:30 +0000, Christoph Lameter wrote:
> This patch requires the earlier bug fix.
> 
> 
> Subject: slub: Make cpu partial slab support configurable
> 
> cpu partial support can introduce level of indeterminism that is not wanted
> in certain context (like a realtime kernel). Make it configurable.
> 
> Signed-off-by: Christoph Lameter <cl@...ux.com>
> 

Hi Christoph,

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.

Thanks!

-- Steve


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