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Date:   Mon, 25 Jul 2022 22:04:58 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
To:     Leo Yan <leo.yan@linaro.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>
CC:     Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Ian Rogers <irogers@google.com>,
        Fangrui Song <maskray@google.com>,
        Chang Rui <changruinj@gmail.com>,
        linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 1/2] perf symbol: Correct address for bss symbols
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On July 25, 2022 9:53:07 PM GMT-03:00, Leo Yan <leo=2Eyan@linaro=2Eorg> wr=
ote:
>Hi Arnaldo,
>
>On Mon, Jul 25, 2022 at 03:29:45PM -0300, Arnaldo Carvalho de Melo wrote:
>
>[=2E=2E=2E]
>
>> > First we used 'perf mem record' to run the test program and then used
>> > 'perf --debug verbose=3D4 mem report' to observe what's the symbol in=
fo
>> > for 'buf1' and 'buf2' structures=2E
>> >=20
>> >   # =2E/perf mem record -e ldlat-loads,ldlat-stores -- false_sharing=
=2Eexe 8
>>=20
>> Can you share the source code for your false sharing proggie? We need t=
o
>> have something in 'perf test' exercising these routines :-)
>
>Sure, I am using the false sharing test case:
>https://github=2Ecom/joemario/perf-c2c-usage-files/blob/master/false_shar=
ing_example=2Ec
>
>=2E=2E=2E with build command:
>
>$ gcc -g false_sharing_example=2Ec -pthread -lnuma -o false_sharing=2Eexe
>
>Do want me to proceed for adding test case?=20

Yes, go ahead, that will be really nice of you to add it :)

- Arnaldo=20

> Otherwise, it's fine if
>you will work on the enabling test case :)
>
>Thanks,
>Leo