X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=Documentation%2Flockstat.txt;h=65f4c795015dead0cfde0f60381b7efcec67da9b;hb=e81e3f4dca6c54116a24aec217d2c15c6f58ada5;hp=9cb9138f7a79bcd67bf4ac2f69741e812b5a14c2;hpb=7d8a804c594b61a05c698126165b5dc417d94a0f;p=deliverable%2Flinux.git

diff --git a/Documentation/lockstat.txt b/Documentation/lockstat.txt
index 9cb9138f7a79..65f4c795015d 100644
--- a/Documentation/lockstat.txt
+++ b/Documentation/lockstat.txt
@@ -62,8 +62,20 @@ applicable).
 It also tracks 4 contention points per class. A contention point is a call site
 that had to wait on lock acquisition.
 
+ - CONFIGURATION
+
+Lock statistics are enabled via CONFIG_LOCK_STATS.
+
  - USAGE
 
+Enable collection of statistics:
+
+# echo 1 >/proc/sys/kernel/lock_stat
+
+Disable collection of statistics:
+
+# echo 0 >/proc/sys/kernel/lock_stat
+
 Look at the current lock statistics:
 
 ( line numbers not part of actual output, done for clarity in the explanation