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-rw-r--r--tools/perf/Documentation/perf-kvm.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-kvm.txt b/tools/perf/Documentation/perf-kvm.txt
index 6252e776009c..6a5bb2b17039 100644
--- a/tools/perf/Documentation/perf-kvm.txt
+++ b/tools/perf/Documentation/perf-kvm.txt
@@ -151,6 +151,12 @@ STAT LIVE OPTIONS
Show events other than HLT (x86 only) or Wait state (s390 only)
that take longer than duration usecs.
+--proc-map-timeout::
+ When processing pre-existing threads /proc/XXX/mmap, it may take
+ a long time, because the file may be huge. A time out is needed
+ in such cases.
+ This option sets the time out limit. The default value is 500 ms.
+
SEE ALSO
--------
linkperf:perf-top[1], linkperf:perf-record[1], linkperf:perf-report[1],