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From: "Liang, Kan" <kan.liang@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: mingo@kernel.org, linux-kernel@vger.kernel.org,
	eranian@google.com, ak@linux.intel.com
Subject: Re: [PATCH] perf/x86/uncore: Add missing filter constraint for SKX CHA event
Date: Mon, 12 Mar 2018 21:49:35 -0400	[thread overview]
Message-ID: <d4d03256-4286-2b09-de52-20738155e139@linux.intel.com> (raw)
In-Reply-To: <20180312163914.GG4043@hirez.programming.kicks-ass.net>



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@google.com>
>>
>> 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@CS1PR84MB0118.NAMPRD84.PROD.OUTLOOK.COM
>


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

  reply	other threads:[~2018-03-13  1:49 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-12 15:41 Kan Liang
2018-03-12 16:39 ` Peter Zijlstra
2018-03-13  1:49   ` Liang, Kan [this message]
2018-03-20 11:16 ` [tip:perf/urgent] perf/x86/intel/uncore: " tip-bot for Stephane Eranian

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