linux-kernel - Re: [PATCH v2 00/11] perf metric fixes and test

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Date:   Thu, 23 Apr 2020 21:44:24 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>, Ian Rogers <irogers@...gle.com>
Cc:     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>,
        Namhyung Kim <namhyung@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Haiyan Song <haiyanx.song@...el.com>,
        Song Liu <songliubraving@...com>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        John Garry <john.garry@...wei.com>,
        Leo Yan <leo.yan@...aro.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Paul Clarke <pc@...ibm.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v2 00/11] perf metric fixes and test

Hi Jiri,

On 4/23/2020 7:28 PM, Jiri Olsa wrote:
> On Wed, Apr 22, 2020 at 03:04:19PM -0700, Ian Rogers wrote:
>> Add a test that all perf metrics (for your architecture) are
>> parsable. Fix bugs in the expr parser and in x86 metrics. Untested on
>> architectures other than x86.
>>
>> v2 adds Fixes tags to commit messages for when broken metrics were
>>    first added. Adds a debug warning for division by zero in expr, and
>>    adds a workaround for id values in the expr test necessary for
>>    powerpc. It also fixes broken power8 and power9 metrics.
> 
> looks good to me
> 
> Jin Yao, is there a metric that's not working for you with this patchset
> applied?
> 
> thanks,
> jirka
> 

Let me look for a CLX for testing, but maybe need some time.

BTW, suppose this patchset can work well, does it mean we will change 
the json file format in future?

For example,

before:
cha@...nt\\=0x36\\\\\\

after:
cha@...nt\\=0x36\\

"\\\\" are removed.

If so, we need to change our event generation script.

Thanks
Jin Yao

>>
>> Ian Rogers (11):
>>    perf expr: unlimited escaped characters in a symbol
>>    perf metrics: fix parse errors in cascade lake metrics
>>    perf metrics: fix parse errors in skylake metrics
>>    perf expr: allow ',' to be an other token
>>    perf expr: increase max other
>>    perf expr: parse numbers as doubles
>>    perf expr: debug lex if debugging yacc
>>    perf metrics: fix parse errors in power8 metrics
>>    perf metrics: fix parse errors in power9 metrics
>>    perf expr: print a debug message for division by zero
>>    perf test: add expr test for pmu metrics
>>
>>   .../arch/powerpc/power8/metrics.json          |  4 +-
>>   .../arch/powerpc/power9/metrics.json          |  2 +-
>>   .../arch/x86/cascadelakex/clx-metrics.json    | 10 +-
>>   .../arch/x86/skylakex/skx-metrics.json        |  4 +-
>>   tools/perf/tests/builtin-test.c               |  5 +
>>   tools/perf/tests/expr.c                       | 96 ++++++++++++++++++-
>>   tools/perf/tests/tests.h                      |  2 +
>>   tools/perf/util/expr.c                        |  1 +
>>   tools/perf/util/expr.h                        |  2 +-
>>   tools/perf/util/expr.l                        | 16 ++--
>>   tools/perf/util/expr.y                        | 16 +++-
>>   11 files changed, 135 insertions(+), 23 deletions(-)
>>
>> -- 
>> 2.26.2.303.gf8c07b1a785-goog
>>
>