linux-kernel - Re: perf_counters issue with self-sampling threads

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Message-ID: <7c86c4470907301409m5f3efcf8odaae72844a6a0d42@mail.gmail.com>
Date:	Thu, 30 Jul 2009 23:09:35 +0200
From:	stephane eranian <eranian@...glemail.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Robert Richter <robert.richter@....com>,
	Paul Mackerras <paulus@...ba.org>,
	Andi Kleen <andi@...stfloor.org>,
	Maynard Johnson <mpjohn@...ibm.com>,
	Carl Love <cel@...ibm.com>,
	Corey J Ashford <cjashfor@...ibm.com>,
	Philip Mucci <mucci@...s.utk.edu>,
	Dan Terpstra <terpstra@...s.utk.edu>,
	perfmon2-devel <perfmon2-devel@...ts.sourceforge.net>,
	Michael Kerrisk <mtk.manpages@...glemail.com>,
	roland <roland@...hat.com>
Subject: Re: perf_counters issue with self-sampling threads

On Thu, Jul 30, 2009 at 10:28 PM, Oleg Nesterov<oleg@...hat.com> wrote:
> On 07/30, Peter Zijlstra wrote:
>>
>> I'll make a patch for F_SETOWN_TID then, unless someone
>> comes up with a better name for the creature ;-)
>
> I think you are right. It is not safe to change the current
> behaviour.
>
I agree. As I said earlier, it is better to just add a new code
path.
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