linux-kernel - Re: [PATCH v2 07/11] perf c2c: Refactor node display macro

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Message-ID: <20210111084402.GH3241@leoy-ThinkPad-X240s>
Date:   Mon, 11 Jan 2021 16:44:02 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Joe Mario <jmario@...hat.com>, David Ahern <dsahern@...il.com>,
        Don Zickus <dzickus@...hat.com>, Al Grant <Al.Grant@....com>,
        James Clark <james.clark@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 07/11] perf c2c: Refactor node display macro

On Wed, Jan 06, 2021 at 04:47:49PM +0900, Namhyung Kim wrote:
> On Sun, Dec 13, 2020 at 10:39 PM Leo Yan <leo.yan@...aro.org> wrote:
> >
> > The macro DISPLAY_HITM() is used to calculate HITM percentage introduced
> > by every node and it's shown for the node info.
> >
> > This patch refactors the macro, it is renamed it as DISPLAY_METRICS().
> > And the parameters is changed for passing the metric's statistic value
> > and the sum value, this is flexsible for later's extension, e.g. it's
> > easier to be used for metrics which combines multiple fields from
> > structure c2c_stats.
> 
> Same as the previous one.

Will do, thanks.

> Thanks,
> Namhyung
> 
> 
> >
> > Signed-off-by: Leo Yan <leo.yan@...aro.org>
> > ---
> >  tools/perf/builtin-c2c.c | 17 ++++++++++-------
> >  1 file changed, 10 insertions(+), 7 deletions(-)
> >
> > diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
> > index f11c3c84bb2b..50018bfb1089 100644
> > --- a/tools/perf/builtin-c2c.c
> > +++ b/tools/perf/builtin-c2c.c
> > @@ -1324,23 +1324,26 @@ node_entry(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp,
> >                         ret = scnprintf(hpp->buf, hpp->size, "%2d{%2d ", node, num);
> >                         advance_hpp(hpp, ret);
> >
> > -               #define DISPLAY_HITM(__h)                                               \
> > -                       if (c2c_he->stats.__h> 0) {                                     \
> > +               #define DISPLAY_METRICS(val, sum)                                       \
> > +               {                                                                       \
> > +                       if ((sum) > 0) {                                                \
> >                                 ret = scnprintf(hpp->buf, hpp->size, "%5.1f%% ",        \
> > -                                               percent(stats->__h, c2c_he->stats.__h));\
> > +                                               percent((val), (sum)));                 \
> >                         } else {                                                        \
> >                                 ret = scnprintf(hpp->buf, hpp->size, "%6s ", "n/a");    \
> > -                       }
> > +                       }                                                               \
> > +               }
> >
> >                         switch (c2c.display) {
> >                         case DISPLAY_RMT:
> > -                               DISPLAY_HITM(rmt_hitm);
> > +                               DISPLAY_METRICS(stats->rmt_hitm, c2c_he->stats.rmt_hitm);
> >                                 break;
> >                         case DISPLAY_LCL:
> > -                               DISPLAY_HITM(lcl_hitm);
> > +                               DISPLAY_METRICS(stats->lcl_hitm, c2c_he->stats.lcl_hitm);
> >                                 break;
> >                         case DISPLAY_TOT:
> > -                               DISPLAY_HITM(tot_hitm);
> > +                               DISPLAY_METRICS(stats->tot_hitm, c2c_he->stats.tot_hitm);
> > +                               break;
> >                         default:
> >                                 break;
> >                         }
> > --
> > 2.17.1
> >