linux-kernel - Re: [PATCH 1/2] perf-events: Add support for supplementary event registers v2

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Message-ID: <AANLkTikr-rOYALdUiRDFahqE1GECO5XNKnbN9LNZBebU@mail.gmail.com>
Date:	Mon, 15 Nov 2010 12:03:28 +0100
From:	Stephane Eranian <eranian@...gle.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	cjashfor@...ux.vnet.ibm.com, mingo@...e.hu, fweisbec@...il.com,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 1/2] perf-events: Add support for supplementary event
 registers v2

On Sat, Nov 13, 2010 at 11:34 AM, Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> On Sat, 2010-11-13 at 11:17 +0100, Andi Kleen wrote:
>> > That would assume a single event doesn't contain offcore and lbr, no?
>> > Currently the extra_reg thing assumes there's only one extra reg encoded
>> > in the config word.
>>
>> It would not be too hard to make it an array if that's needed.
>
> I don't think we want to go there anyway, one extra_reg per config value
> is fine.
>
I think offcore goes into .config, lbr goes into extra_reg. That should take
care of combinations as well.
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