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-rw-r--r--tools/perf/Documentation/perf-sched.txt18
1 files changed, 16 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-sched.txt b/tools/perf/Documentation/perf-sched.txt
index 8417644a6166..46822d5fde1c 100644
--- a/tools/perf/Documentation/perf-sched.txt
+++ b/tools/perf/Documentation/perf-sched.txt
@@ -8,11 +8,11 @@ perf-sched - Tool to trace/measure scheduler properties (latencies)
SYNOPSIS
--------
[verse]
-'perf sched' {record|latency|replay|trace}
+'perf sched' {record|latency|map|replay|trace}
DESCRIPTION
-----------
-There are four variants of perf sched:
+There are five variants of perf sched:
'perf sched record <command>' to record the scheduling events
of an arbitrary workload.
@@ -30,8 +30,22 @@ There are four variants of perf sched:
of the workload as it occurred when it was recorded - and can repeat
it a number of times, measuring its performance.)
+ 'perf sched map' to print a textual context-switching outline of
+ workload captured via perf sched record. Columns stand for
+ individual CPUs, and the two-letter shortcuts stand for tasks that
+ are running on a CPU. A '*' denotes the CPU that had the event, and
+ a dot signals an idle CPU.
+
OPTIONS
-------
+-i::
+--input=<file>::
+ Input file name. (default: perf.data)
+
+-v::
+--verbose::
+ Be more verbose. (show symbol address, etc)
+
-D::
--dump-raw-trace=::
Display verbose dump of the sched data.