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-rw-r--r--tools/perf/Documentation/perf-record.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index 3d55d2fd48b3..27256bc68eda 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -427,6 +427,8 @@ based on 'mode' value:
"signal" - when receiving a SIGUSR2 (default value) or
<size> - when reaching the size threshold, size is expected to
be a number with appended unit character - B/K/M/G
+ <time> - when reaching the time threshold, size is expected to
+ be a number with appended unit character - s/m/h/d
Note: the precision of the size threshold hugely depends
on your configuration - the number and size of your ring