* Counting FP multiplies on Core 2
@ 2010-01-07 4:52 Paul Mackerras
2010-01-07 8:30 ` Peter Zijlstra
0 siblings, 1 reply; 2+ messages in thread
From: Paul Mackerras @ 2010-01-07 4:52 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar; +Cc: linux-kernel
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.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Counting FP multiplies on Core 2
2010-01-07 4:52 Counting FP multiplies on Core 2 Paul Mackerras
@ 2010-01-07 8:30 ` Peter Zijlstra
0 siblings, 0 replies; 2+ messages in thread
From: Peter Zijlstra @ 2010-01-07 8:30 UTC (permalink / raw)
To: Paul Mackerras; +Cc: Ingo Molnar, linux-kernel
On Thu, 2010-01-07 at 15:52 +1100, Paul Mackerras wrote:
> 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?
Right, this is what Stephane is trying to implement, but he's not very
fast.. maybe I should help him out.
^ permalink raw reply [flat|nested] 2+ messages in thread
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