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-rw-r--r--tools/perf/Documentation/perf-diff.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt
index 21cc2ef7756b..194f37d635df 100644
--- a/tools/perf/Documentation/perf-diff.txt
+++ b/tools/perf/Documentation/perf-diff.txt
@@ -87,6 +87,10 @@ OPTIONS
--period::
Show period values for both compared hist entries.
+-F::
+--formula::
+ Show formula for given computation.
+
COMPARISON METHODS
------------------
delta