linux-kernel - Re: [PATCH 16/19] perf metric: Make compute

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Message-ID: <CAP-5=fWAC4DkKiPzKvAiVpMDFWvf3HPZ5=tiSUbJ50w+kjXhfg@mail.gmail.com>
Date:   Tue, 28 Jul 2020 10:26:20 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...nel.org>, lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        John Garry <john.garry@...wei.com>,
        "Paul A. Clarke" <pc@...ibm.com>,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 16/19] perf metric: Make compute_single function more precise

On Tue, Jul 28, 2020 at 5:36 AM Arnaldo Carvalho de Melo
<acme@...nel.org> wrote:
>
> Em Sun, Jul 19, 2020 at 08:13:17PM +0200, Jiri Olsa escreveu:
> > So far compute_single function relies on the fact, that
> > there's only single metric defined within evlist in all
> > tests. In following patch we will add test for metric
> > group, so we need to be able to compute metric by given
> > name.
> >
> > Adding the name argument to compute_single and iterating
> > evlist and evsel's expression to find the given metric.
>
> Applied, thanks.
>
> Ian, Kajol, I didn't notice your Acked-by or Reviewed-by, like for the
> other patches, can you check?


Acked-by: Ian Rogers <irogers@...gle.com>

Thanks,
Ian

> - Arnaldo
>
> > Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> > ---
> >  tools/perf/tests/parse-metric.c | 22 +++++++++++++---------
> >  1 file changed, 13 insertions(+), 9 deletions(-)
> >
> > diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c
> > index 01370ccb9ed9..5ac32f80f8ea 100644
> > --- a/tools/perf/tests/parse-metric.c
> > +++ b/tools/perf/tests/parse-metric.c
> > @@ -108,17 +108,21 @@ static void load_runtime_stat(struct runtime_stat *st, struct evlist *evlist,
> >  }
> >
> >  static double compute_single(struct rblist *metric_events, struct evlist *evlist,
> > -                          struct runtime_stat *st)
> > +                          struct runtime_stat *st, const char *name)
> >  {
> > -     struct evsel *evsel = evlist__first(evlist);
> > +     struct metric_expr *mexp;
> >       struct metric_event *me;
> > +     struct evsel *evsel;
> >
> > -     me = metricgroup__lookup(metric_events, evsel, false);
> > -     if (me != NULL) {
> > -             struct metric_expr *mexp;
> > -
> > -             mexp = list_first_entry(&me->head, struct metric_expr, nd);
> > -             return test_generic_metric(mexp, 0, st);
> > +     evlist__for_each_entry(evlist, evsel) {
> > +             me = metricgroup__lookup(metric_events, evsel, false);
> > +             if (me != NULL) {
> > +                     list_for_each_entry (mexp, &me->head, nd) {
> > +                             if (strcmp(mexp->metric_name, name))
> > +                                     continue;
> > +                             return test_generic_metric(mexp, 0, st);
> > +                     }
> > +             }
> >       }
> >       return 0.;
> >  }
> > @@ -162,7 +166,7 @@ static int compute_metric(const char *name, struct value *vals, double *ratio)
> >       load_runtime_stat(&st, evlist, vals);
> >
> >       /* And execute the metric */
> > -     *ratio = compute_single(&metric_events, evlist, &st);
> > +     *ratio = compute_single(&metric_events, evlist, &st, name);
> >
> >       /* ... clenup. */
> >       metricgroup__rblist_exit(&metric_events);
> > --
> > 2.25.4
> >
>
> --
>
> - Arnaldo