diff options
Diffstat (limited to 'block/blk-cgroup.h')
| -rw-r--r-- | block/blk-cgroup.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index bea7f3b9a88..bfce085b196 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -43,6 +43,9 @@ enum stat_type { BLKIO_STAT_SECTORS, #ifdef CONFIG_DEBUG_BLK_CGROUP BLKIO_STAT_AVG_QUEUE_SIZE, + BLKIO_STAT_IDLE_TIME, + BLKIO_STAT_EMPTY_TIME, + BLKIO_STAT_GROUP_WAIT_TIME, BLKIO_STAT_DEQUEUE #endif }; @@ -55,6 +58,13 @@ enum stat_sub_type { BLKIO_STAT_TOTAL }; +/* blkg state flags */ +enum blkg_state_flags { + BLKG_waiting = 0, + BLKG_idling, + BLKG_empty, +}; + struct blkio_cgroup { struct cgroup_subsys_state css; unsigned int weight; @@ -74,6 +84,21 @@ struct blkio_group_stats { uint64_t avg_queue_size_samples; /* How many times this group has been removed from service tree */ unsigned long dequeue; + + /* Total time spent waiting for it to be assigned a timeslice. */ + uint64_t group_wait_time; + uint64_t start_group_wait_time; + + /* Time spent idling for this blkio_group */ + uint64_t idle_time; + uint64_t start_idle_time; + /* + * Total time when we have requests queued and do not contain the + * current active queue. + */ + uint64_t empty_time; + uint64_t start_empty_time; + uint16_t flags; #endif }; @@ -137,12 +162,41 @@ static inline char *blkg_path(struct blkio_group *blkg) void blkiocg_update_set_active_queue_stats(struct blkio_group *blkg); void blkiocg_update_dequeue_stats(struct blkio_group *blkg, unsigned long dequeue); +void blkiocg_update_set_idle_time_stats(struct blkio_group *blkg); +void blkiocg_update_idle_time_stats(struct blkio_group *blkg); +void blkiocg_set_start_empty_time(struct blkio_group *blkg, bool ignore); + +#define BLKG_FLAG_FNS(name) \ +static inline void blkio_mark_blkg_##name( \ + struct blkio_group_stats *stats) \ +{ \ + stats->flags |= (1 << BLKG_##name); \ +} \ +static inline void blkio_clear_blkg_##name( \ + struct blkio_group_stats *stats) \ +{ \ + stats->flags &= ~(1 << BLKG_##name); \ +} \ +static inline int blkio_blkg_##name(struct blkio_group_stats *stats) \ +{ \ + return (stats->flags & (1 << BLKG_##name)) != 0; \ +} \ + +BLKG_FLAG_FNS(waiting) +BLKG_FLAG_FNS(idling) +BLKG_FLAG_FNS(empty) +#undef BLKG_FLAG_FNS #else static inline char *blkg_path(struct blkio_group *blkg) { return NULL; } static inline void blkiocg_update_set_active_queue_stats( struct blkio_group *blkg) {} static inline void blkiocg_update_dequeue_stats(struct blkio_group *blkg, unsigned long dequeue) {} +static inline void blkiocg_update_set_idle_time_stats(struct blkio_group *blkg) +{} +static inline void blkiocg_update_idle_time_stats(struct blkio_group *blkg) {} +static inline void blkiocg_set_start_empty_time(struct blkio_group *blkg, + bool ignore) {} #endif #if defined(CONFIG_BLK_CGROUP) || defined(CONFIG_BLK_CGROUP_MODULE) |