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-rw-r--r--tools/perf/Documentation/perf-lock.txt7
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diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt
index 30eea57672..503abcba14 100644
--- a/tools/perf/Documentation/perf-lock.txt
+++ b/tools/perf/Documentation/perf-lock.txt
@@ -208,6 +208,13 @@ CONTENTION OPTIONS
Show results using a CSV-style output to make it easy to import directly
into spreadsheets. Columns are separated by the string specified in SEP.
+--lock-cgroup::
+ Show lock contention stat by cgroup. Requires --use-bpf.
+
+-G::
+--cgroup-filter=<value>::
+ Show lock contention only in the given cgroups (comma separated list).
+
SEE ALSO
--------