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perf diff: Add diff.order config option

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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.

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/20170210073614.24584-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2017-02-10 16:36:12 +09:00
committed by Arnaldo Carvalho de Melo
parent a1668c25a8
commit d49dd15d69
3 changed files with 26 additions and 1 deletions
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6
tools/perf/Documentation/perf-diff.txt
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@@ -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.
The default value can be set using the diff.order config option.
--percentage::
Determine how to display the overhead percentage of filtered entries.