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-rw-r--r--tools/perf/Documentation/perf-config.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index 0098eab8e5b1..4ac7775fbc11 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -543,6 +543,10 @@ trace.*::
trace.show_duration::
Show syscall duration.
+ trace.show_prefix::
+ If set to 'yes' will show common string prefixes in tables. The default
+ is to remove the common prefix in things like "MAP_SHARED", showing just "SHARED".
+
trace.show_timestamp::
Show syscall start timestamp.