linux-kernel - Re: [PATCH] perf, x86: Update event scheduling constraints for AMD family 15h models

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Message-ID: <1337340552.573.33.camel@twins>
Date:	Fri, 18 May 2012 13:29:12 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Robert Richter <robert.richter@....com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Stephane Eranian <eranian@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>, stable@...r.kernel.org
Subject: Re: [PATCH] perf, x86: Update event scheduling constraints for AMD
 family 15h models

On Fri, 2012-05-18 at 12:40 +0200, Robert Richter wrote:
> +               case 0x031:
> +                       if (hweight_long(hwc->config & ARCH_PERFMON_EVENTSEL_UMASK) <= 1)
> +                               return &amd_f15_PMC20;
> +                       return &emptyconstraint;
> +               case 0x1C0:
> +                       return &amd_f15_PMC53; 

Oh man, that's just vile.. I hope you've given your hardware team a big
hug for this.. :-)
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