linux-kernel - Re: [RFC PATCH 0/2] ipc: do not hold ipc lock more than necessary

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Date:	Fri, 1 Mar 2013 17:35:29 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Davidlohr Bueso <davidlohr.bueso@...com>
Cc:	Rik van Riel <riel@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	"Vinod, Chegu" <chegu_vinod@...com>,
	"Low, Jason" <jason.low2@...com>,
	linux-tip-commits@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>, aquini@...hat.com,
	Michel Lespinasse <walken@...gle.com>,
	Ingo Molnar <mingo@...nel.org>,
	Larry Woodman <lwoodman@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 0/2] ipc: do not hold ipc lock more than necessary

On Fri, Mar 1, 2013 at 5:32 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> On Fri, Mar 1, 2013 at 4:16 PM, Davidlohr Bueso <davidlohr.bueso@...com> wrote:
>>
>> With Rik's semop-multi.c microbenchmark we can see the following
>> results:
>
> Ok, that certainly looks very good.

Side note: it's fairly late in the merge window, and I don't feel
comfy merging this without more testing and more people looking at it,
so I think this is a 3.10 thing. But it would be great to see ipc
people really look at the patches, and perhaps run a few real loads to
see if it's even noticeable in practice..

              Linus
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