linux-kernel - [PATCH 0/4] perf script: Add script per-event-dump support

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Date:   Mon, 18 Sep 2017 13:55:18 +0800
From:   yuzhoujian <ufo19890607@...il.com>
To:     peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
        dsahern@...il.com, namhyung@...nel.org, milian.wolff@...b.com,
        arnaldo.melo@...il.com, yuzhoujian@...ichuxing.com
Cc:     linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] perf script: Add script per-event-dump support

Introduce a new option to print trace output to files named by the
monitored events and update perf-script documentation accordingly.

Shown below is output of perf script command with the newly introduced
option.

        $perf record -e cycles -e context-switches -ag -- sleep 10
        $perf script --per-event-dump
        $ls /
        cycles.stacks context-switches.stacks

Without per-event-dump support, drawing flamegraphs for different events
is really hard. You can only monitor one event at a time for perf record.
Using this option, we can get the trace output files named by the monitored
events, and could draw flamegraphs according to the event's name.

yuzhoujian (4):
  Add a new element for the struct perf_tool, and add the
    --per-event-dump     option for perf script
  Makes all those related functions receive the FILE pointer
  Add the fp_selection_helper function to set the file pointer     for
    the related functions
  Replace printf with fprintf for all the output functions

 tools/perf/builtin-script.c | 451 +++++++++++++++++++++++++-------------------
 tools/perf/util/tool.h      |   1 +
 2 files changed, 253 insertions(+), 199 deletions(-)

-- 
1.8.3.1