linux-kernel - Re: Linux 3.1-rc9

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Message-ID: <alpine.LFD.2.02.1111021929310.2829@ionos>
Date:	Wed, 2 Nov 2011 19:30:49 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Simon Kirby <sim@...tway.ca>
cc:	David Miller <davem@...emloft.net>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Network Development <netdev@...r.kernel.org>
Subject: Re: Linux 3.1-rc9

On Wed, 2 Nov 2011, Simon Kirby wrote:
> On Wed, Nov 02, 2011 at 05:40:53PM +0100, Thomas Gleixner wrote:
> Ok, I'll try this. Hmm, all CPUs typically try to grab the lock fairly
> quickly after it happens, which could make it difficult to cat the file.
> I'll try ftrace_dump(DUMP_ALL); in there instead.

Eric has spotted the source of trouble already. Can you try his patch
first? If it still persists, we still can resort to hardcore tracing :)

Thanks,

	tglx
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