path: root/block/blk-cgroup.h
diff options
authorDivyesh Shah <dpshah@google.com>2010-04-01 15:01:41 -0700
committerJens Axboe <jens.axboe@oracle.com>2010-04-02 08:44:37 +0200
commit9195291e5f05e01d67f9a09c756b8aca8f009089 (patch)
treee46a151fe39be2bc23d0683bedb2cbefe916fb5b /block/blk-cgroup.h
parent303a3acb2362f16c7e7f4c53b40c2f4b396dc8d5 (diff)
blkio: Increment the blkio cgroup stats for real now
We also add start_time_ns and io_start_time_ns fields to struct request here to record the time when a request is created and when it is dispatched to device. We use ns uints here as ms and jiffies are not very useful for non-rotational media. Signed-off-by: Divyesh Shah<dpshah@google.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/blk-cgroup.h')
1 files changed, 11 insertions, 3 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 5c5e5294b50..80010ef64ab 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -112,12 +112,12 @@ static inline char *blkg_path(struct blkio_group *blkg)
return blkg->path;
-void blkiocg_update_blkio_group_dequeue_stats(struct blkio_group *blkg,
+void blkiocg_update_dequeue_stats(struct blkio_group *blkg,
unsigned long dequeue);
static inline char *blkg_path(struct blkio_group *blkg) { return NULL; }
-static inline void blkiocg_update_blkio_group_dequeue_stats(
- struct blkio_group *blkg, unsigned long dequeue) {}
+static inline void blkiocg_update_dequeue_stats(struct blkio_group *blkg,
+ unsigned long dequeue) {}
@@ -130,6 +130,10 @@ extern struct blkio_group *blkiocg_lookup_group(struct blkio_cgroup *blkcg,
void *key);
void blkiocg_update_timeslice_used(struct blkio_group *blkg,
unsigned long time);
+void blkiocg_update_request_dispatch_stats(struct blkio_group *blkg,
+ struct request *rq);
+void blkiocg_update_request_completion_stats(struct blkio_group *blkg,
+ struct request *rq);
struct cgroup;
static inline struct blkio_cgroup *
@@ -147,5 +151,9 @@ static inline struct blkio_group *
blkiocg_lookup_group(struct blkio_cgroup *blkcg, void *key) { return NULL; }
static inline void blkiocg_update_timeslice_used(struct blkio_group *blkg,
unsigned long time) {}
+static inline void blkiocg_update_request_dispatch_stats(
+ struct blkio_group *blkg, struct request *rq) {}
+static inline void blkiocg_update_request_completion_stats(
+ struct blkio_group *blkg, struct request *rq) {}
#endif /* _BLK_CGROUP_H */