Messages in this thread Patch in this message | | | From | Namhyung Kim <> | Subject | [PATCH 2/3] perf diff: Add diff.order config option | Date | Mon, 6 Feb 2017 16:20:36 +0900 |
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In many cases, I need to look at differences between two data so I often used the -o option to sort the result base on the difference first. It'd be nice to have a config option to set it by default.
The diff.order config option is to set the default value of -o/--order option.
Cc: Taeung Song <treeze.taeung@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- tools/perf/Documentation/perf-config.txt | 7 +++++++ tools/perf/Documentation/perf-diff.txt | 6 +++++- tools/perf/builtin-diff.c | 14 ++++++++++++++ 3 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt index 9365b75fd04f..5b54d47ef713 100644 --- a/tools/perf/Documentation/perf-config.txt +++ b/tools/perf/Documentation/perf-config.txt @@ -498,6 +498,13 @@ Variables But if this option is 'no-cache', it will not update the build-id cache. 'skip' skips post-processing and does not update the cache. +diff.*:: + diff.order:: + This option sets the number of column to sort the result. + Default is 0 which means sorting by baseline. + Setting it to 1 will sort the result by delta (or other + compute method selected). + SEE ALSO -------- linkperf:perf[1] diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt index af80284cd2f6..6ba3bf582d79 100644 --- a/tools/perf/Documentation/perf-diff.txt +++ b/tools/perf/Documentation/perf-diff.txt @@ -99,7 +99,11 @@ OPTIONS -o:: --order:: - Specify compute sorting column number. + Specify compute sorting column number. 0 means sorting by baseline + overhead (default) and 1 means sorting by computed value of column 1 + (data from the first file other base baseline). Values more than 1 + can be used only if enough data files are provided. + Default value can be set using diff.order config option. --percentage:: Determine how to display the overhead percentage of filtered entries. diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index 781c9e60bd21..181ff996e039 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -17,6 +17,7 @@ #include "util/symbol.h" #include "util/util.h" #include "util/data.h" +#include "util/config.h" #include <stdlib.h> #include <math.h> @@ -1291,6 +1292,17 @@ static int data_init(int argc, const char **argv) return 0; } +static int diff__config(const char *var, const char *value, + void *cb __maybe_unused) +{ + if (!strcmp(var, "diff.order")) { + sort_compute = perf_config_int(var, value); + return 0; + } + + return 0; +} + int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused) { int ret = hists__init(); @@ -1298,6 +1310,8 @@ int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused) if (ret < 0) return ret; + perf_config(diff__config, NULL); + argc = parse_options(argc, argv, options, diff_usage, 0); if (symbol__init(NULL) < 0) -- 2.11.0
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