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-rw-r--r--block/blk-cgroup.h39
1 files changed, 31 insertions, 8 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index fe445178f58..5c5e5294b50 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -23,6 +23,14 @@ extern struct cgroup_subsys blkio_subsys;
#define blkio_subsys_id blkio_subsys.subsys_id
#endif
+enum io_type {
+ IO_READ = 0,
+ IO_WRITE,
+ IO_SYNC,
+ IO_ASYNC,
+ IO_TYPE_MAX
+};
+
struct blkio_cgroup {
struct cgroup_subsys_state css;
unsigned int weight;
@@ -30,6 +38,23 @@ struct blkio_cgroup {
struct hlist_head blkg_list;
};
+struct blkio_group_stats {
+ /* total disk time and nr sectors dispatched by this group */
+ uint64_t time;
+ uint64_t sectors;
+ /* Total disk time used by IOs in ns */
+ uint64_t io_service_time[IO_TYPE_MAX];
+ uint64_t io_service_bytes[IO_TYPE_MAX]; /* Total bytes transferred */
+ /* Total IOs serviced, post merge */
+ uint64_t io_serviced[IO_TYPE_MAX];
+ /* Total time spent waiting in scheduler queue in ns */
+ uint64_t io_wait_time[IO_TYPE_MAX];
+#ifdef CONFIG_DEBUG_BLK_CGROUP
+ /* How many times this group has been removed from service tree */
+ unsigned long dequeue;
+#endif
+};
+
struct blkio_group {
/* An rcu protected unique identifier for the group */
void *key;
@@ -38,15 +63,13 @@ struct blkio_group {
#ifdef CONFIG_DEBUG_BLK_CGROUP
/* Store cgroup path */
char path[128];
- /* How many times this group has been removed from service tree */
- unsigned long dequeue;
#endif
/* The device MKDEV(major, minor), this group has been created for */
dev_t dev;
- /* total disk time and nr sectors dispatched by this group */
- unsigned long time;
- unsigned long sectors;
+ /* Need to serialize the stats in the case of reset/update */
+ spinlock_t stats_lock;
+ struct blkio_group_stats stats;
};
typedef void (blkio_unlink_group_fn) (void *key, struct blkio_group *blkg);
@@ -105,8 +128,8 @@ extern void blkiocg_add_blkio_group(struct blkio_cgroup *blkcg,
extern int blkiocg_del_blkio_group(struct blkio_group *blkg);
extern struct blkio_group *blkiocg_lookup_group(struct blkio_cgroup *blkcg,
void *key);
-void blkiocg_update_blkio_group_stats(struct blkio_group *blkg,
- unsigned long time);
+void blkiocg_update_timeslice_used(struct blkio_group *blkg,
+ unsigned long time);
#else
struct cgroup;
static inline struct blkio_cgroup *
@@ -122,7 +145,7 @@ blkiocg_del_blkio_group(struct blkio_group *blkg) { return 0; }
static inline struct blkio_group *
blkiocg_lookup_group(struct blkio_cgroup *blkcg, void *key) { return NULL; }
-static inline void blkiocg_update_blkio_group_stats(struct blkio_group *blkg,
+static inline void blkiocg_update_timeslice_used(struct blkio_group *blkg,
unsigned long time) {}
#endif
#endif /* _BLK_CGROUP_H */