Re: [PATCH] perf/x86/uncore: Add missing filter constraint for SKX CHA event

[Liang, Kan]

On 3/12/2018 12:39 PM, Peter Zijlstra wrote:
> On Mon, Mar 12, 2018 at 08:41:34AM -0700, Kan Liang wrote:
> > From: Stephane Eranian <eranian@xxxxxxxxxx>
> >
> > Adding a filter constraint for Intel Skylake CHA event
> > UNC_CHA_UPI_CREDITS_ACQUIRED (0x38).
> > The event supports core-id/thread-id and link filtering.
>
> Could you also comment on the other CHA patch?
>
>   https://lkml.kernel.org/r/CS1PR84MB01182561B15688095C4DBF30F6D80@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


Now, there is a recommended way in uncore document to query the number 
of CHAs by reading bits 27:0 in the CAPID6 register located at Device 
30, Function 3, Offset 0x9C.
I have implemented a patch and sent it to Gary. It should fix his issue.

Thanks,
Kan