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-rw-r--r--tools/perf/Documentation/perf-lock.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt
index d1efcbe7a470..30eea576721f 100644
--- a/tools/perf/Documentation/perf-lock.txt
+++ b/tools/perf/Documentation/perf-lock.txt
@@ -36,6 +36,9 @@ COMMON OPTIONS
--input=<file>::
Input file name. (default: perf.data unless stdin is a fifo)
+--output=<file>::
+ Output file name for perf lock contention and report.
+
-v::
--verbose::
Be more verbose (show symbol address, etc).