linux-kernel - [RFC 0/3] perf tools: Add support for used defined metric

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Message-Id: <20191211224800.9066-1-jolsa@kernel.org>
Date:   Wed, 11 Dec 2019 23:47:57 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     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>,
        Joe Mario <jmario@...hat.com>, Andi Kleen <ak@...ux.intel.com>,
        Kajol Jain <kjain@...ux.ibm.com>
Subject: [RFC 0/3] perf tools: Add support for used defined metric

hi,
Joe asked for possibility to add user defined metrics. Given that
we already have metrics support, I added --metric option that allows
to specify metric on the command line, like:

  # perf stat  --metric 'DECODED_ICACHE_UOPS% = 100 * (idq.dsb_uops / \
    (idq.ms_uops + idq.mite_uops + idq.dsb_uops + lsd.uops))' ...

The code facilitates the current metric code, and I was surprised
how easy it was, so I'm not sure I omitted something ;-)

Also available in:
  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
  perf/metric

thoughts?
jirka

---
Jiri Olsa (3):
      perf tools: Factor metric addition into add_metric function
      perf tools: Factor metric setup code into metricgroup__setup function
      perf stat: Add --metric option

 tools/perf/Documentation/perf-stat.txt |  16 ++++++++++
 tools/perf/builtin-stat.c              |  21 +++++++++++++
 tools/perf/util/metricgroup.c          | 189 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------------------
 tools/perf/util/metricgroup.h          |   2 ++
 4 files changed, 168 insertions(+), 60 deletions(-)