linux-kernel - Re: [PATCH 14/14] perf tests: Add parse metric test for frontend metric

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Message-ID: <20200601150852.GM31795@kernel.org>
Date:   Mon, 1 Jun 2020 12:08:52 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
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>,
        Stephane Eranian <eranian@...gle.com>,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 14/14] perf tests: Add parse metric test for frontend
 metric

Em Mon, Jun 01, 2020 at 01:06:01AM -0700, Ian Rogers escreveu:
> On Sun, May 24, 2020 at 3:43 PM Jiri Olsa <jolsa@...nel.org> wrote:
> >
> > Adding new metri test for frontend metric. It's stolen
> 
> s/metri/metric/
> 
> > from x86 pmu events.
> >
> > Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> 
> Acked-by: Ian Rogers <irogers@...gle.com>

Ditto.

- Arnaldo
 
> Thanks,
> Ian
> 
> > ---
> >  tools/perf/tests/parse-metric.c | 46 +++++++++++++++++++++++++++++++++
> >  1 file changed, 46 insertions(+)
> >
> > diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c
> > index 3005d27c5c48..38f20850bba3 100644
> > --- a/tools/perf/tests/parse-metric.c
> > +++ b/tools/perf/tests/parse-metric.c
> > @@ -15,6 +15,11 @@ static struct pmu_event pme_test[] = {
> >         .metric_expr    = "inst_retired.any / cpu_clk_unhalted.thread",
> >         .metric_name    = "IPC",
> >  },
> > +{
> > +       .metric_expr    = "idq_uops_not_delivered.core / (4 * (( ( cpu_clk_unhalted.thread / 2 ) * "
> > +                         "( 1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk ) )))",
> > +       .metric_name    = "Frontend_Bound_SMT",
> > +},
> >  };
> >
> >  static struct pmu_events_map map = {
> > @@ -110,8 +115,49 @@ static int test_ipc(void)
> >         return 0;
> >  }
> >
> > +static int test_frontend(void)
> > +{
> > +       double ratio;
> > +       struct rblist metric_events = { 0 };
> > +       struct evlist *evlist;
> > +       struct evsel *evsel;
> > +       struct value vals[] = {
> > +               { .event = "idq_uops_not_delivered.core",        .val = 300 },
> > +               { .event = "cpu_clk_unhalted.thread",            .val = 200 },
> > +               { .event = "cpu_clk_unhalted.one_thread_active", .val = 400 },
> > +               { .event = "cpu_clk_unhalted.ref_xclk",          .val = 600 },
> > +               { 0 },
> > +       };
> > +       struct runtime_stat st;
> > +       int err;
> > +
> > +       evlist = evlist__new();
> > +       if (!evlist)
> > +               return -1;
> > +
> > +       err = metricgroup__parse_groups_test(evlist, &map,
> > +                                            "Frontend_Bound_SMT",
> > +                                            false, false,
> > +                                            &metric_events);
> > +
> > +       TEST_ASSERT_VAL("failed to parse metrics", err == 0);
> > +
> > +       runtime_stat__init(&st);
> > +       load_runtime_stat(&st, evlist, vals);
> > +
> > +       evsel = evlist__first(evlist);
> > +       ratio = compute_single(&metric_events, evsel, &st);
> > +
> > +       TEST_ASSERT_VAL("Frontend_Bound_SMT failed, wrong ratio", ratio == 0.45);
> > +
> > +       runtime_stat__exit(&st);
> > +       evlist__delete(evlist);
> > +       return 0;
> > +}
> > +
> >  int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unused)
> >  {
> >         TEST_ASSERT_VAL("IPC failed", test_ipc() == 0);
> > +       TEST_ASSERT_VAL("frontend failed", test_frontend() == 0);
> >         return 0;
> >  }
> > --
> > 2.25.4
> >

-- 

- Arnaldo