linux-kernel - Re: [PATCH] perf vendor events arm64: Add AmpereOne core pmu events

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Date:   Thu, 22 Jun 2023 09:03:13 -0500
From:   Dave Kleikamp <dave.kleikamp@...cle.com>
To:     Ilkka Koskinen <ilkka@...amperecomputing.com>
Cc:     John Garry <john.g.garry@...cle.com>,
        Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH] perf vendor events arm64: Add AmpereOne core pmu events

On 6/21/23 10:27PM, Ilkka Koskinen wrote:
> 
> Hi Dave,
> 
> On Wed, 21 Jun 2023, Dave Kleikamp wrote:
>> On 4/27/23 5:32PM, Ilkka Koskinen wrote:
>>> Add JSON files for AmpereOne core PMU events.
>>>
>>> Signed-off-by: Doug Rady <dcrady@...amperecomputing.com>
>>> Signed-off-by: Ilkka Koskinen <ilkka@...amperecomputing.com>
>>> ---
>>
>>  CLIP
>>
>>> diff --git 
>>> a/tools/perf/pmu-events/arch/arm64/ampere/ampereone/cache.json 
>>> b/tools/perf/pmu-events/arch/arm64/ampere/ampereone/cache.json
>>> new file mode 100644
>>> index 000000000000..fc0633054211
>>> --- /dev/null
>>> +++ b/tools/perf/pmu-events/arch/arm64/ampere/ampereone/cache.json
>>> @@ -0,0 +1,104 @@
>>> +[
>>> +    {
>>> +        "ArchStdEvent": "L1D_CACHE_RD"
>>> +    },
> 
> ....
> 
>>> +    {
>>> +        "ArchStdEvent": "L1D_CACHE_LMISS_RD"
>>> +    },
>>> +    {
>>> +        "ArchStdEvent": "L1D_CACHE_LMISS"
>>
>> L1D_CACHE_LMISS is not defined anywhere.
> 
> 
> Good catch! I must have thought the python script would at least print a 
> warning of missing event as I compared the build logs with and without 
> the patch. I can prepare a fix for this and submit with another couple 
> of patches. I'm hoping to be able to do that by the beginning of next week.

Thanks. I found it trying to port this to a 5.15 kernel which still uses 
the c program.

Shaggy

> 
> Cheers, Ilkka
> 
>>
>>> +    },
>>> +    {
>>> +        "ArchStdEvent": "L1I_CACHE_LMISS"
>>> +    },
>>> +    {
>>> +        "ArchStdEvent": "L2D_CACHE_LMISS_RD"
>>> +    }
>>> +]
>>
>>