Re: LLC-* events not working on sandybridge

[Namhyung Kim <namhyung.kim@xxxxxxx>]

Hi,

On Mon, 30 Apr 2012 18:50:39 +0100, David Wragg wrote:
> Namhyung Kim <namhyung.kim@xxxxxxx> writes:
>> On Sun, 29 Apr 2012 00:03:14 +0100, David Wragg wrote:
>>> I've run into a problem with perf on an Intel Sandybridge machine: The
>>> LLC-* events never seem to trigger.
>>> [...]
>>
>> I have a same problem on my i7-3930K machine. I guess it's because of
>> lacking of extra register (MSP_OFFCORE_RSP_X) settings. But I have no
>> idea of how I can set it properly :(.
>
> Ok, I've done some further digging around, and it doesn't look like the
> patch "perf events, x86: Implement Sandybridge last-level cache events"
> at <https://lkml.org/lkml/2011/5/9/80> ever got merged.  It's not clear
> why.
>

It seems that PeterZ and Ingo don't want an unverified patch get
merged. But you can still test with it and, hopefully, provide us a
verification :).

Thanks,
Namhyung
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