Messages in this thread | | | Date | Thu, 5 Jul 2012 17:45:16 +0200 | Subject | Re: [PATCH 2/5] perf, x86: Enable PDIR precise instruction profiling on IvyBridge | From | Stephane Eranian <> |
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On Tue, Jul 3, 2012 at 6:04 AM, Andi Kleen <andi@firstfloor.org> wrote: >> Well, the only way I can think of would be to request that the >> event be programmed with exclusive mode ALWAYS. That >> should not be to hard to add. > > I suspect it would need some special callbacks from the events core, > that's why I only tried on IvyBridge. >x You could simply add a check in the x86 init code like what is done with the pebs events and precise mode.
> Anyways, I'll drop it as the people in charge didn't approve of > instruction sampling. > > -Andi
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