linux-kernel - Re: [PATCH 05/34] perf, x86: Report PEBS event in a raw format

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Message-ID: <20121023134505.GD16230@one.firstfloor.org>
Date:	Tue, 23 Oct 2012 15:45:05 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andi Kleen <andi@...stfloor.org>, x86 <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 05/34] perf, x86: Report PEBS event in a raw format

> I believe we can use a similar approach to PERF_SAMPLE_REGS to expose
> the PEBS machine state. We need to add PERF_SAMPLE_IREGS and then
> return interrupt machine registers with regular sampling and the PEBS machine
> registers in precise mode. A while back I wrote a patch to do just this. Once my
> PEBS-LL patch is out, I will get back to it.

But why not just use raw? That's far simpler and works fine and is
already supported by perf script.

-andi
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