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Message-ID: <1338994803.2749.132.camel@twins>
Subject: Re: [PATCH 2/5] perf, x86: Don't assume there can be only 4 PEBS
 events
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Andi Kleen <andi@firstfloor.org>
Cc: linux-kernel@vger.kernel.org, eranian@google.com,
        Andi Kleen <ak@linux.intel.com>
Date: Wed, 06 Jun 2012 17:00:03 +0200
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On Tue, 2012-06-05 at 17:56 -0700, Andi Kleen wrote:
> On Sandy Bridge in non HT mode there are 8 counters available. Since every
> counter can write a PEBS record assuming there are 4 max is incorrect. Use
> the reported counter number -- with an upper limit for a static array -- instead.


While I queued this patch, its effectively a NOP since all SNB PEBS
constraints are still on 4 counters.