linux-kernel - Counting FP multiplies on Core 2

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Message-ID: <20100107045248.GB30718@drongo>
Date:	Thu, 7 Jan 2010 15:52:48 +1100
From:	Paul Mackerras <paulus@...ba.org>
To:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org
Subject: Counting FP multiplies on Core 2

The Intel manual tells me that event num 12H, umask 00H on Core 2
counts multiply operations executed, but says "Use IA32_PMC1 only".
Is there a way in the raw event code to specify a particular PMC, or
does the code just know that that event can only be counted on PMC1?

Paul.
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