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authorTejun Heo <tj@kernel.org>2012-03-08 10:53:57 -0800
committerJens Axboe <axboe@kernel.dk>2012-03-20 12:45:37 +0100
commit5fe224d2d5fbf8f020b30d0ba69fed7856923752 (patch)
tree26941c40cd28c4f7070e8edab338d340afd2bc99 /block/blk-cgroup.h
parent1cd9e039fc258f91fe38b97b3c622b13a3b8a795 (diff)
blkcg: don't use percpu for merged stats
With recent plug merge updates, merged stats are no longer called for plug merges and now only updated while holding queue_lock. As stats_lock is scheduled to be removed, there's no reason to use percpu for merged stats. Don't use percpu for merged stats. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.h')
-rw-r--r--block/blk-cgroup.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 1de32fe0e2a..6c8e3e34542 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -29,10 +29,12 @@ enum blkio_policy_id {
#ifdef CONFIG_BLK_CGROUP
enum stat_type {
+ /* Number of IOs merged */
+ BLKIO_STAT_MERGED,
/* Total time spent (in ns) between request dispatch to the driver and
* request completion for IOs doen by this cgroup. This may not be
* accurate when NCQ is turned on. */
- BLKIO_STAT_SERVICE_TIME = 0,
+ BLKIO_STAT_SERVICE_TIME,
/* Total time spent waiting in scheduler queue in ns */
BLKIO_STAT_WAIT_TIME,
/* Number of IOs queued up */
@@ -57,8 +59,6 @@ enum stat_type_cpu {
BLKIO_STAT_CPU_SERVICE_BYTES,
/* Total IOs serviced, post merge */
BLKIO_STAT_CPU_SERVICED,
- /* Number of IOs merged */
- BLKIO_STAT_CPU_MERGED,
BLKIO_STAT_CPU_NR
};