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-rw-r--r--tools/perf/Documentation/perf-trace.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
index 3b3552a8959e..2794efce47a1 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -30,6 +30,10 @@ OPTIONS
--expr::
List of events to show, currently only syscall names.
+-o::
+--output=::
+ Output file name.
+
-p::
--pid=::
Record events on existing process ID (comma separated list).