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Diffstat (limited to 'Documentation/lockstat.txt')
| -rw-r--r-- | Documentation/lockstat.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/lockstat.txt b/Documentation/lockstat.txt index 9cb9138f7a7..65f4c795015 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 |