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

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Date:   Wed, 29 Jul 2020 01:47:01 +0530
From:   kajoljain <kjain@...ux.ibm.com>
To:     Ian Rogers <irogers@...gle.com>,
        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>,
        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 7/28/20 10:56 PM, Ian Rogers wrote:
> 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>

Reviewed-By: Kajol Jain<kjain@...ux.ibm.com>

Thanks,
Kajol Jain
> 
> 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