linux-kernel - [PATCHv3 0/4] perf tools: Add support for user defined metric

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Date:   Mon, 11 May 2020 22:53:03 +0200
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>,
        John Garry <john.garry@...wei.com>
Subject: [PATCHv3 0/4] perf tools: Add support for user defined metric

hi,
Joe asked for possibility to add user defined metrics. Given that
we already have metrics support, I added --metrics-file option that
allows to specify custom metrics.

  $ cat metrics
  # IPC
  mine1 = instructions / cycles;
  /* DECODED_ICACHE_UOPS% */
  mine2 = 100 * (idq.dsb_uops / \ (idq.ms_uops + idq.mite_uops + idq.dsb_uops + lsd.uops));

  $ sudo perf stat --metrics-file ./metrics -M mine1,mine2 --metric-only -a -I 1000
  #           time       insn per cycle                mine1                mine2
       1.000536263                0.71                   0.7                 41.4
       2.002069025                0.31                   0.3                 14.1
       3.003427684                0.27                   0.3                 14.8
       4.004807132                0.25                   0.2                 12.1
  ...

v3 changes:
  - added doc for metrics file in perf stat man page
  - reporting error line number now
  - changed '#' style comment to C way with '//'

v2 changes:
  - add new --metrics-file option
  - rebased on current perf/core expression bison/flex enhancements

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

thanks,
jirka


---
Jiri Olsa (4):
      perf expr: Add parsing support for multiple expressions
      perf expr: Allow comments in custom metric file
      perf stat: Add --metrics-file option
      perf expr: Report line number with error

 tools/perf/Documentation/perf-stat.txt | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tools/perf/builtin-stat.c              |  7 +++++--
 tools/perf/tests/expr.c                | 18 ++++++++++++++++++
 tools/perf/util/expr.c                 |  6 ++++++
 tools/perf/util/expr.h                 | 21 +++++++++++++++++++--
 tools/perf/util/expr.l                 | 34 ++++++++++++++++++++++++++++++++++
 tools/perf/util/expr.y                 | 21 +++++++++++++++++----
 tools/perf/util/metricgroup.c          | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
 tools/perf/util/metricgroup.h          |  3 ++-
 tools/perf/util/stat.h                 |  1 +
 10 files changed, 242 insertions(+), 16 deletions(-)