linux-kernel - Re: Shift by one instruction in the perf annotate output

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Date:	Fri, 27 Jan 2012 11:44:42 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Lénaïc Huard <lenaic@...ard.fr.eu.org>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel@...r.kernel.org
Subject: Re: Shift by one instruction in the perf annotate output


* Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> On Fri, 2012-01-27 at 11:27 +0100, Ingo Molnar wrote:
>
> > On Core2 CPUs there's PEBS so 'p' will work, but there's no 
> > LBR so the IP-rewinding does not work.
> 
> Not on his thing.. PEBS is a trainwreck on model 15.

ok - i have a model 23, there it works:

[    0.044260] CPU0: Intel(R) Core(TM)2 Duo CPU     T9600  @ 2.80GHz stepping 06
[    0.044996] Performance Events: PEBS fmt0+, Core2 events, Intel PMU driver.

Thanks,

	Ingo
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