linux-kernel - Re: perf counter issue - WARN_ON_ONCE(!list_empty(&tsk->perf_counter_ctx.counter

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Date:	Fri, 15 May 2009 18:13:21 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	vatsa@...ibm.com
Cc:	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Mike Galbraith <efault@....de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Paul Mackerras <paulus@...ba.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Subject: Re: perf counter issue -
 WARN_ON_ONCE(!list_empty(&tsk->perf_counter_ctx.counter_list));

On Fri, 2009-05-15 at 21:28 +0530, Srivatsa Vaddagiri wrote:
> On Fri, May 15, 2009 at 11:51:44AM -0300, Arnaldo Carvalho de Melo wrote:
> > > hm, is there a reproducer perhaps? Is there some class file i could 
> > > run with specific parameters to reproduce it?
> > 
> > I'll try this with some java benchmarks we have, AMQP related, lets see
> > if I can reproduce it.
> 
> I tried this with SPECJbb - which I am not at liberty to distribute
> unfortunately. I will try and recreate it with volanomark or other open
> source benchmarks.

I could indeed reproduce with vmark. Am poking at it.. still clueless
though ;-)

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