linux-kernel - Re: [PATCH RFC v4 13/13] perf vendor events: Add JSON metrics for imx8mm DDR Perf

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Date:   Mon, 12 Oct 2020 11:34:40 +0100
From:   John Garry <john.garry@...wei.com>
To:     Joakim Zhang <qiangqing.zhang@....com>,
        "acme@...nel.org" <acme@...nel.org>,
        "will@...nel.org" <will@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "jolsa@...hat.com" <jolsa@...hat.com>,
        "irogers@...gle.com" <irogers@...gle.com>,
        "leo.yan@...aro.org" <leo.yan@...aro.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "alexander.shishkin@...ux.intel.com" 
        <alexander.shishkin@...ux.intel.com>,
        "namhyung@...nel.org" <namhyung@...nel.org>,
        "mathieu.poirier@...aro.org" <mathieu.poirier@...aro.org>
CC:     Linuxarm <linuxarm@...wei.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Zhangshaokun <zhangshaokun@...ilicon.com>,
        "james.clark@....com" <james.clark@....com>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH RFC v4 13/13] perf vendor events: Add JSON metrics for
 imx8mm DDR Perf

On 12/10/2020 11:03, Joakim Zhang wrote:
>> --- /dev/null
>> +++ b/tools/perf/pmu-events/arch/arm64/freescale/imx8mm/sys/ddrc.json
>> @@ -0,0 +1,39 @@
>> +[
>> +   {
>> +           "BriefDescription": "ddr cycles event",
>> +           "EventCode": "0x00",
>> +           "EventName": "imx8_ddr.cycles",
> Could you help change to imx8mm_ddr.cycles? Thanks a lot!

Can do.

Note that I want to improve perf list in future such that alias 
"imx8_ddr.cycles" removes kernel PMU events which this alias is 
matching. The motivation is that perf list can be swamped by kernel 
uncore PMU events listing.

> 
>> +           "Unit": "imx8_ddr",
>> +           "Compat": "i.MX8MM"