linux-kernel - Re: [PATCH v4 00/12] perf metric fixes and test

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Date:   Mon, 11 May 2020 12:32:07 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Ian Rogers <irogers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        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>,
        Jin Yao <yao.jin@...ux.intel.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,
        kajoljain <kjain@...ux.ibm.com>,
        linux-perf-users@...r.kernel.org,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v4 00/12] perf metric fixes and test

Em Thu, May 07, 2020 at 10:44:45AM +0200, Jiri Olsa escreveu:
> On Fri, May 01, 2020 at 10:33:21AM -0700, Ian Rogers wrote:
> > Add a test that all perf metrics (for your architecture) are parsable
> > with the simple expression parser. Attempt to parse all events in
> > metrics but only fail if the metric is for the current CPU. Fix bugs
> > in the expr parser, x86 and powerpc metrics. Improve debug messages
> > around add PMU config term failures.
> > 
> > v4 rebases after Kajol Jain's patches and fixes an asprintf warning.
> > v3 adds parse event testing of ids and improves debug messages for add
> >   PMU. These messages are paticular visible with 'perf test 10
> >   -vvv'. It moves the testing logic from tests/expr.c to
> >   tests/pmu-events.c as suggested by John Garry
> >   <john.garry@...wei.com>.  
> > 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.
> > 
> > Ian Rogers (12):
> >   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
> 
> heya,
> could we please get the 1st 10 patches in? they are important,
> and let's not block them with new versions for patches 11/12
> 
> Acked-by: Jiri Olsa <jolsa@...hat.com>

The first ten patches are in, can we go with what Ian suggested for the
last two patches?

- Arnaldo
 
> thanks,
> jirka
> 
> >   perf parse-events: expand add PMU error/verbose messages
> >   perf test: improve pmu event metric testing
> > 
> >  tools/perf/arch/x86/util/intel-pt.c           |  32 ++--
> >  .../arch/powerpc/power8/metrics.json          |   2 +-
> >  .../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                       |   1 +
> >  tools/perf/tests/pmu-events.c                 | 156 +++++++++++++++++-
> >  tools/perf/tests/pmu.c                        |   4 +-
> >  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 +-
> >  tools/perf/util/parse-events.c                |  29 +++-
> >  tools/perf/util/pmu.c                         |  33 ++--
> >  tools/perf/util/pmu.h                         |   2 +-
> >  17 files changed, 262 insertions(+), 55 deletions(-)
> > 
> > -- 
> > 2.26.2.526.g744177e7f7-goog
> > 
> 

-- 

- Arnaldo