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-rw-r--r--tools/perf/Documentation/perf-config.txt5
-rw-r--r--tools/perf/Documentation/perf-diff.txt5
2 files changed, 8 insertions, 2 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::