linux-kernel - [PATCH v1 0/8] perf: Follow-up patches to improve time slice

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Message-Id: <1515596433-24653-1-git-send-email-yao.jin@linux.intel.com>
Date:   Wed, 10 Jan 2018 23:00:25 +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 0/8] perf: Follow-up patches to improve time slice

It's follow-up patches to improve the perf time slice feature
(perf report/script --time xxx)

1. Improve the error message
   perf report: Improve error msg when no first/last sample time found
   perf script: Improve error msg when no first/last sample time found

2. Fix an issue that illegal percent was accepted previously (e.g. 1abc%)
   perf util: Improve error checking for time percent input

3. Omit the slice index if possible. For example,
   perf report --stdio --time 10%/1 is equivalent to
   perf report --stdio --time 10%

   perf util: Support no index time percent slice 

4. Add indication of time slices in perf report header.
   perf report: Add an indication of what time slices are used

5. Remove the time slices number limitation in perf report/script
   perf util: Allocate time slices buffer according to number of comma
   perf report: Remove the time slices number limitation
   perf script: Remove the time slices number limitation

Jin Yao (8):
  perf report: Improve error msg when no first/last sample time found
  perf script: Improve error msg when no first/last sample time found
  perf util: Improve error checking for time percent input
  perf util: Support no index time percent slice
  perf report: Add an indication of what time slices are used
  perf util: Allocate time slices buffer according to number of comma
  perf report: Remove the time slices number limitation
  perf script: Remove the time slices number limitation

 tools/perf/Documentation/perf-report.txt |  2 +-
 tools/perf/Documentation/perf-script.txt | 10 ++---
 tools/perf/builtin-report.c              | 30 +++++++++----
 tools/perf/builtin-script.c              | 21 +++++++---
 tools/perf/util/time-utils.c             | 72 +++++++++++++++++++++++++++++++-
 tools/perf/util/time-utils.h             |  2 +
 6 files changed, 117 insertions(+), 20 deletions(-)

-- 
2.7.4