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-rw-r--r--tools/perf/Documentation/perf-ftrace.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt
index 2d96de6132a9..2d39397f3f30 100644
--- a/tools/perf/Documentation/perf-ftrace.txt
+++ b/tools/perf/Documentation/perf-ftrace.txt
@@ -30,6 +30,10 @@ OPTIONS
--verbose=::
Verbosity level.
+-p::
+--pid=::
+ Trace on existing process id (comma separated list).
+
SEE ALSO
--------