linux-kernel - Re: [PATCH 07/18] perf metric: Add add

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Date:   Tue, 14 Jul 2020 14:11:02 -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 07/18] perf metric: Add add_metric function

On Sun, Jul 12, 2020 at 6:27 AM Jiri Olsa <jolsa@...nel.org> wrote:
>
> Decouple metric adding login into add_metric function,

s/login/logging/ ?

> so it can be used from other places in following changes.
>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>

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

Thanks,
Ian

> ---
>  tools/perf/util/metricgroup.c | 42 ++++++++++++++++++++++-------------
>  1 file changed, 26 insertions(+), 16 deletions(-)
>
> diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
> index 72552608ff7d..9a168f3df7a4 100644
> --- a/tools/perf/util/metricgroup.c
> +++ b/tools/perf/util/metricgroup.c
> @@ -634,18 +634,11 @@ static struct pmu_event *find_metric(const char *metric, struct pmu_events_map *
>         return NULL;
>  }
>
> -static int metricgroup__add_metric(const char *metric, bool metric_no_group,
> -                                  struct strbuf *events,
> -                                  struct list_head *group_list,
> -                                  struct pmu_events_map *map)
> +static int add_metric(struct list_head *group_list,
> +                     struct pmu_event *pe,
> +                     bool metric_no_group)
>  {
> -       struct pmu_event *pe;
> -       struct egroup *eg;
> -       int ret;
> -
> -       pe = find_metric(metric, map);
> -       if (!pe)
> -               return -EINVAL;
> +       int ret = 0;
>
>         pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
>
> @@ -654,8 +647,6 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
>                                                 pe,
>                                                 metric_no_group,
>                                                 1);
> -               if (ret)
> -                       return ret;
>         } else {
>                 int j, count;
>
> @@ -666,14 +657,33 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
>                  * those events to group_list.
>                  */
>
> -               for (j = 0; j < count; j++) {
> +               for (j = 0; j < count && !ret; j++) {
>                         ret = __metricgroup__add_metric(
>                                 group_list, pe,
>                                 metric_no_group, j);
> -                       if (ret)
> -                               return ret;
>                 }
>         }
> +
> +       return ret;
> +}
> +
> +static int metricgroup__add_metric(const char *metric, bool metric_no_group,
> +                                  struct strbuf *events,
> +                                  struct list_head *group_list,
> +                                  struct pmu_events_map *map)
> +{
> +       struct pmu_event *pe;
> +       struct egroup *eg;
> +       int ret;
> +
> +       pe = find_metric(metric, map);
> +       if (!pe)
> +               return -EINVAL;
> +
> +       ret = add_metric(group_list, pe, metric_no_group);
> +       if (ret)
> +               return ret;
> +
>         list_for_each_entry(eg, group_list, nd) {
>                 if (events->len > 0)
>                         strbuf_addf(events, ",");
> --
> 2.25.4
>