linux-kernel - Re: [PATCH 17/19] perf metric: Add metric group test

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Message-ID: <CAP-5=fWmm5pvH-hwkaAKV=__7Ocbc-4Qj8OCJWz_xi4pc65A=Q@mail.gmail.com>
Date:   Sun, 19 Jul 2020 15:41:14 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...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 17/19] perf metric: Add metric group test

On Sun, Jul 19, 2020 at 11:14 AM Jiri Olsa <jolsa@...nel.org> wrote:
>
> Adding test for metric group plus compute_metric_group
> function to get metrics values within the group.
>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>

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

Thanks,
Ian

> ---
>  tools/perf/tests/parse-metric.c | 48 +++++++++++++++++++++++++++++++--
>  1 file changed, 46 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/tests/parse-metric.c b/tools/perf/tests/parse-metric.c
> index 5ac32f80f8ea..f2ba5b2c5557 100644
> --- a/tools/perf/tests/parse-metric.c
> +++ b/tools/perf/tests/parse-metric.c
> @@ -18,6 +18,7 @@ static struct pmu_event pme_test[] = {
>  {
>         .metric_expr    = "inst_retired.any / cpu_clk_unhalted.thread",
>         .metric_name    = "IPC",
> +       .metric_group   = "group1",
>  },
>  {
>         .metric_expr    = "idq_uops_not_delivered.core / (4 * (( ( cpu_clk_unhalted.thread / 2 ) * "
> @@ -35,6 +36,7 @@ static struct pmu_event pme_test[] = {
>  {
>         .metric_expr    = "(dcache_miss_cpi + icache_miss_cycles)",
>         .metric_name    = "cache_miss_cycles",
> +       .metric_group   = "group1",
>  },
>  {
>         .metric_expr    = "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit",
> @@ -127,7 +129,9 @@ static double compute_single(struct rblist *metric_events, struct evlist *evlist
>         return 0.;
>  }
>
> -static int compute_metric(const char *name, struct value *vals, double *ratio)
> +static int __compute_metric(const char *name, struct value *vals,
> +                           const char *name1, double *ratio1,
> +                           const char *name2, double *ratio2)
>  {
>         struct rblist metric_events = {
>                 .nr_entries = 0,
> @@ -166,7 +170,10 @@ 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, name);
> +       if (name1 && ratio1)
> +               *ratio1 = compute_single(&metric_events, evlist, &st, name1);
> +       if (name2 && ratio2)
> +               *ratio2 = compute_single(&metric_events, evlist, &st, name2);
>
>         /* ... clenup. */
>         metricgroup__rblist_exit(&metric_events);
> @@ -177,6 +184,18 @@ static int compute_metric(const char *name, struct value *vals, double *ratio)
>         return 0;
>  }
>
> +static int compute_metric(const char *name, struct value *vals, double *ratio)
> +{
> +       return __compute_metric(name, vals, name, ratio, NULL, NULL);
> +}
> +
> +static int compute_metric_group(const char *name, struct value *vals,
> +                               const char *name1, double *ratio1,
> +                               const char *name2, double *ratio2)
> +{
> +       return __compute_metric(name, vals, name1, ratio1, name2, ratio2);
> +}
> +
>  static int test_ipc(void)
>  {
>         double ratio;
> @@ -297,6 +316,30 @@ static int test_recursion_fail(void)
>         return 0;
>  }
>
> +static int test_metric_group(void)
> +{
> +       double ratio1, ratio2;
> +       struct value vals[] = {
> +               { .event = "cpu_clk_unhalted.thread", .val = 200 },
> +               { .event = "l1d-loads-misses",        .val = 300 },
> +               { .event = "l1i-loads-misses",        .val = 200 },
> +               { .event = "inst_retired.any",        .val = 400 },
> +               { 0 },
> +       };
> +
> +       TEST_ASSERT_VAL("failed to find recursion",
> +                       compute_metric_group("group1", vals,
> +                                            "IPC", &ratio1,
> +                                            "cache_miss_cycles", &ratio2) == 0);
> +
> +       TEST_ASSERT_VAL("group IPC failed, wrong ratio",
> +                       ratio1 == 2.0);
> +
> +       TEST_ASSERT_VAL("group cache_miss_cycles failed, wrong ratio",
> +                       ratio2 == 1.25);
> +       return 0;
> +}
> +
>  int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unused)
>  {
>         TEST_ASSERT_VAL("IPC failed", test_ipc() == 0);
> @@ -304,5 +347,6 @@ int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unu
>         TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0);
>         TEST_ASSERT_VAL("DCache_L2 failed", test_dcache_l2() == 0);
>         TEST_ASSERT_VAL("recursion fail failed", test_recursion_fail() == 0);
> +       TEST_ASSERT_VAL("test metric group", test_metric_group() == 0);
>         return 0;
>  }
> --
> 2.25.4
>