tree 743808e1d2252876c0b0f3550c6dba70f7e8e779
parent e37d2438d8e5e4c1225cf94d45347fa207835447
author Lars Ellenberg <lars.ellenberg@linbit.com> 1385119921 +0100
committer Philipp Reisner <philipp.reisner@linbit.com> 1405010111 +0200

drbd: gather detailed timing statistics for drbd_requests

Record (in jiffies) how much time a request spends in which stages.
Followup commits will use and present this additional timing information
so we can better locate and tackle the root causes of latency spikes,
or present the backlog for asynchronous replication.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>