linux-kernel - Re: [RFC][PATCH 2/3] futex: Reduce hash bucket lock contention

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Message-ID: <1316417840.10174.46.camel@twins>
Date:	Mon, 19 Sep 2011 09:37:20 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Manfred Spraul <manfred@...orfullife.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
	Darren Hart <dvhart@...ux.intel.com>,
	David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Mike Galbraith <efault@....de>
Subject: Re: [RFC][PATCH 2/3] futex: Reduce hash bucket lock contention

On Sat, 2011-09-17 at 14:57 +0200, Manfred Spraul wrote:
> How do we verify that everything is able to deal with spurious
> wakeups?
> 
Well, I could go audit all 1400+ *schedule*() callsites in the kernel.
Or we can rely on the fact that current code can already cause spurious
wakeups due to signals.


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