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-rw-r--r--tools/perf/Documentation/perf-stat.txt16
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index 918cc38ee6d1..8966b9ab2014 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -94,6 +94,22 @@ an empty cgroup (monitor all the time) using, e.g., -G foo,,bar. Cgroups must ha
corresponding events, i.e., they always refer to events defined earlier on the command
line.
+-o file::
+--output file::
+Print the output into the designated file.
+
+--append::
+Append to the output file designated with the -o option. Ignored if -o is not specified.
+
+--log-fd::
+
+Log output to fd, instead of stderr. Complementary to --output, and mutually exclusive
+with it. --append may be used here. Examples:
+ 3>results perf stat --log-fd 3 -- $cmd
+ 3>>results perf stat --log-fd 3 --append -- $cmd
+
+
+
EXAMPLES
--------