Messages in this thread | | | Date | Fri, 17 Feb 2012 15:08:07 -0700 | From | David Ahern <> | Subject | Re: perf, x86: Disable PEBS on SandyBridge chips |
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On 2/17/12 2:40 PM, H. Peter Anvin wrote: > On 02/17/2012 07:12 AM, Peter Zijlstra wrote: >> On Fri, 2012-02-17 at 13:39 +0100, Maarten Lankhorst wrote: >>> Hey Peter, >>> >>> Why is PEBS disabled? If I look at the intel_clovertown_quirks I can see >>> why it's disabled for that cpu, but the sandy bridge one lacks any kind >>> of clarification or information on why, or how I can learn more. >> >> hpa, could you get the official Intel answer on this? > > *Where* is PEBS disabled?
arch/x86/kernel/cpu/perf_event_intel.c, intel_sandybridge_quirk()
David
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