linux-kernel - Re: [PATCH 06/10] perf tools: Collect other metrics in struct egroup

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Date:   Mon, 29 Jun 2020 00:04:07 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Jiri Olsa <jolsa@...nel.org>,
        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 06/10] perf tools: Collect other metrics in struct egroup

On Fri, Jun 26, 2020 at 02:06:47PM -0700, Ian Rogers wrote:

SNIP

> > diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
> > index 85e7fa2e2707..f88fd667cc78 100644
> > --- a/tools/perf/util/metricgroup.c
> > +++ b/tools/perf/util/metricgroup.c
> > @@ -102,12 +102,20 @@ void metricgroup__rblist_exit(struct rblist *metric_events)
> >         rblist__exit(metric_events);
> >  }
> >
> > +struct eother {
> > +       const char *metric_name;
> > +       const char *metric_expr;
> > +       struct list_head list;
> > +};
> > +
> >  struct egroup {
> >         struct list_head nd;
> >         struct expr_parse_ctx pctx;
> >         const char *metric_name;
> >         const char *metric_expr;
> >         const char *metric_unit;
> > +       struct list_head other;
> > +       int other_cnt;
> >         int runtime;
> >         bool has_constraint;
> >  };
> 
> Nit, could we do better than egroup and eother for struct names?
> egroup are nodes within the metric group with their associated values,
> so would metric_group_node be more intention revealing? eother and
> other are metrics referred to by the metric_group_node. Presumably the
> metrics are on the same list as egroup? Perhaps eother could be
> referenced_metrics?

ok, how about:

struct metric_group_node
struct metric_ref

jirka