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| author | Namhyung Kim <namhyung@kernel.org> | 2017-02-10 16:36:13 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-02-13 14:29:37 -0300 |
| commit | 4b35994abe459f08f58b4b3855abf4ba80308680 (patch) | |
| tree | dae5371d583a12e6ebbcfb56ee27d705d5d8920e /tools | |
| parent | d49dd15d69731589de4436a6dcfca59567320fdf (diff) | |
| download | lwn-4b35994abe459f08f58b4b3855abf4ba80308680.tar.gz lwn-4b35994abe459f08f58b4b3855abf4ba80308680.zip | |
perf diff: Add diff.compute config option
The diff.compute config variable is to set the default compute method of
perf diff command (-c option). Possible values 'delta' (default),
'delta-abs', 'ratio' and 'wdiff'.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Taeung Song <treeze.taeung@gmail.com>
Link: http://lkml.kernel.org/r/20170210073614.24584-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/Documentation/perf-config.txt | 5 | ||||
| -rw-r--r-- | tools/perf/Documentation/perf-diff.txt | 5 | ||||
| -rw-r--r-- | tools/perf/builtin-diff.c | 16 |
3 files changed, 23 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt index 49ab79d662fa..5b4fff3adc4b 100644 --- a/tools/perf/Documentation/perf-config.txt +++ b/tools/perf/Documentation/perf-config.txt @@ -505,6 +505,11 @@ diff.*:: Setting it to 1 will sort the result by delta (or other compute method selected). + diff.compute:: + This options sets the method for computing the diff result. + Possible values are 'delta', 'delta-abs', 'ratio' and + 'wdiff'. Default is 'delta'. + SEE ALSO -------- linkperf:perf[1] diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt index 7c014c9934bb..7391299defef 100644 --- a/tools/perf/Documentation/perf-diff.txt +++ b/tools/perf/Documentation/perf-diff.txt @@ -86,8 +86,9 @@ OPTIONS -c:: --compute:: - Differential computation selection - delta,ratio,wdiff,delta-abs (default is delta). - See COMPARISON METHODS section for more info. + Differential computation selection - delta, ratio, wdiff, delta-abs + (default is delta). Default can be changed using diff.compute + config option. See COMPARISON METHODS section for more info. -p:: --period:: diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 181ff996e039..e68cc76bdc5a 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -86,7 +86,7 @@ const char *compute_names[COMPUTE_MAX] = { [COMPUTE_WEIGHTED_DIFF] = "wdiff", }; -static int compute; +static int compute = COMPUTE_DELTA; static int compute_2_hpp[COMPUTE_MAX] = { [COMPUTE_DELTA] = PERF_HPP_DIFF__DELTA, @@ -1299,6 +1299,20 @@ static int diff__config(const char *var, const char *value, sort_compute = perf_config_int(var, value); return 0; } + if (!strcmp(var, "diff.compute")) { + if (!strcmp(value, "delta")) { + compute = COMPUTE_DELTA; + } else if (!strcmp(value, "delta-abs")) { + compute = COMPUTE_DELTA_ABS; + } else if (!strcmp(value, "ratio")) { + compute = COMPUTE_RATIO; + } else if (!strcmp(value, "wdiff")) { + compute = COMPUTE_WEIGHTED_DIFF; + } else { + pr_err("Invalid compute method: %s\n", value); + return -1; + } + } return 0; } |