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-rw-r--r--tools/perf/Documentation/perf-top.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 324b6b53c86b..ddab103af8c7 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -272,6 +272,10 @@ Default is to monitor all CPUS.
Record events of type PERF_RECORD_NAMESPACES and display it with the
'cgroup_id' sort key.
+--all-cgroups::
+ Record events of type PERF_RECORD_CGROUP and display it with the
+ 'cgroup' sort key.
+
--switch-on EVENT_NAME::
Only consider events after this event is found.