linux-kernel - Re: [PATCH] perf: Fix inconsistency between IP and callchain sampling

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Date:	Fri, 22 Jan 2010 13:04:08 +1100
From:	Anton Blanchard <anton@...ba.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mundt <lethal@...ux-sh.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf: Fix inconsistency between IP and callchain
 sampling

 
Hi Frederic,

> Concerning interrupts that happen in idle, I think we should filter
> these if exclude_idle = 1. That looks more something a user may
> want: if we don't want to profile idle, neither do we want to encumber with
> interrupts that occur inside. On the opposite, if someone wants a finegrained
> profile, let's get idle and its interrupts.
> 
> What do you guys think about that?

Yeah that sounds reasonable to me. Thanks for looking into it!

Anton
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