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-rw-r--r--tools/perf/Documentation/perf-config.txt18
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index cb081ac59fd1..1714b0c8c8e1 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -8,6 +8,8 @@ perf-config - Get and set variables in a configuration file.
SYNOPSIS
--------
[verse]
+'perf config' [<file-option>] [section.name ...]
+or
'perf config' [<file-option>] -l | --list
DESCRIPTION
@@ -118,6 +120,22 @@ Given a $HOME/.perfconfig like this:
children = true
group = true
+To query the record mode of call graph, do
+
+ % perf config call-graph.record-mode
+
+If you want to know multiple config key/value pairs, you can do like
+
+ % perf config report.queue-size call-graph.order report.children
+
+To query the config value of sort order of call graph in user config file (i.e. `~/.perfconfig`), do
+
+ % perf config --user call-graph.sort-order
+
+To query the config value of buildid directory in system config file (i.e. `$(sysconf)/perfconfig`), do
+
+ % perf config --system buildid.dir
+
Variables
~~~~~~~~~