perf sched timehist: Add option to specify time window of interest

[linux-2.6-block.git] / tools / perf / Documentation / perf-sched.txt

diff --git a/tools/perf/Documentation/perf-sched.txt b/tools/perf/Documentation/perf-sched.txt
index 121c60da03e524734ec4a23087fcfd543858700e..7775b1eb2bee6bd092fe854b63b12150aa50699f 100644 (file)
--- a/tools/perf/Documentation/perf-sched.txt
+++ b/tools/perf/Documentation/perf-sched.txt
@@ -132,6 +132,14 @@ OPTIONS for 'perf sched timehist'
 --migrations::
        Show migration events.
 
+--time::
+       Only analyze samples within given time window: <start>,<stop>. Times
+       have the format seconds.microseconds. If start is not given (i.e., time
+       string is ',x.y') then analysis starts at the beginning of the file. If
+       stop time is not given (i.e, time string is 'x.y,') then analysis goes
+       to end of file.
+
+
 SEE ALSO
 --------
 linkperf:perf-record[1]