linux-kernel - [PATCH v1 0/6] perf report/script: Support percent and multiple range in --time option

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Date:   Wed, 20 Sep 2017 23:12:31 +0800
From:   Jin Yao <yao.jin@...ux.intel.com>
To:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc:     Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com,
        Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH v1 0/6] perf report/script: Support percent and multiple range in --time option

Current perf report/script/... have a --time option to limit the time
range of output. But it only supports the absolute time.

The patch series extend this option to let it support percent of time
and support the multiple time ranges.

For example:

1. Select the second 10% time slice
   perf report --time 10%/2

2. Select from 0% to 10% time slice
   perf report --time 0%-10%

It also support the multiple time ranges.

3. Select the first and second 10% time slices
   perf report --time 10%/1,10%/2

4. Select from 0% to 10% and 30% to 40% slices
   perf report --time 0%-10%,30%-40%

Jin Yao (6):
  perf record: Record the first sample time and last sample time to perf
    file header
  perf Documentation: Update perf.data-file-format.txt
  perf util: Create function to parse time percent
  perf util: Create function to perform multiple time range checking
  perf report: support time percent and multiple time ranges
  perf script: support time percent and multiple time ranges

 tools/perf/Documentation/perf-report.txt           |  16 ++
 tools/perf/Documentation/perf-script.txt           |  16 ++
 tools/perf/Documentation/perf.data-file-format.txt |  27 ++-
 tools/perf/builtin-record.c                        |  15 ++
 tools/perf/builtin-report.c                        |  24 ++-
 tools/perf/builtin-script.c                        |  21 +-
 tools/perf/util/header.c                           |  59 +++++-
 tools/perf/util/header.h                           |   4 +
 tools/perf/util/session.h                          |   2 +
 tools/perf/util/time-utils.c                       | 224 +++++++++++++++++++--
 tools/perf/util/time-utils.h                       |   6 +
 11 files changed, 383 insertions(+), 31 deletions(-)

-- 
2.7.4