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SubjectRe: perf, x86: Disable PEBS on SandyBridge chips
On 02/17/2012 02:08 PM, David Ahern wrote:
> 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()

OK, this is Peter's patch and I don't think I was involved with it... I
need more of a pointer to be able to track this down.


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