diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 2 | ||||
| -rw-r--r-- | block/blk-mq.c | 2 | ||||
| -rw-r--r-- | block/blk-stat.h | 41 | ||||
| -rw-r--r-- | block/blk-wbt.h | 10 |
4 files changed, 37 insertions, 18 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index ad388d5e309a..4234332aa23c 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2483,7 +2483,7 @@ void blk_start_request(struct request *req) blk_dequeue_request(req); if (test_bit(QUEUE_FLAG_STATS, &req->q->queue_flags)) { - blk_stat_set_issue_time(&req->issue_stat); + blk_stat_set_issue(&req->issue_stat, blk_rq_sectors(req)); req->rq_flags |= RQF_STATS; wbt_issue(req->q->rq_wb, &req->issue_stat); } diff --git a/block/blk-mq.c b/block/blk-mq.c index 45b9bebf8436..caef6ee08b04 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -488,7 +488,7 @@ void blk_mq_start_request(struct request *rq) trace_block_rq_issue(q, rq); if (test_bit(QUEUE_FLAG_STATS, &q->queue_flags)) { - blk_stat_set_issue_time(&rq->issue_stat); + blk_stat_set_issue(&rq->issue_stat, blk_rq_sectors(rq)); rq->rq_flags |= RQF_STATS; wbt_issue(q->rq_wb, &rq->issue_stat); } diff --git a/block/blk-stat.h b/block/blk-stat.h index 6ad5b8c59a79..ee47f816d5bd 100644 --- a/block/blk-stat.h +++ b/block/blk-stat.h @@ -8,12 +8,19 @@ #include <linux/timer.h> /* - * Upper 3 bits can be used elsewhere + * from upper: + * 3 bits: reserved for other usage + * 12 bits: size + * 49 bits: time */ #define BLK_STAT_RES_BITS 3 -#define BLK_STAT_SHIFT (64 - BLK_STAT_RES_BITS) -#define BLK_STAT_TIME_MASK ((1ULL << BLK_STAT_SHIFT) - 1) -#define BLK_STAT_MASK ~BLK_STAT_TIME_MASK +#define BLK_STAT_SIZE_BITS 12 +#define BLK_STAT_RES_SHIFT (64 - BLK_STAT_RES_BITS) +#define BLK_STAT_SIZE_SHIFT (BLK_STAT_RES_SHIFT - BLK_STAT_SIZE_BITS) +#define BLK_STAT_TIME_MASK ((1ULL << BLK_STAT_SIZE_SHIFT) - 1) +#define BLK_STAT_SIZE_MASK \ + (((1ULL << BLK_STAT_SIZE_BITS) - 1) << BLK_STAT_SIZE_SHIFT) +#define BLK_STAT_RES_MASK (~((1ULL << BLK_STAT_RES_SHIFT) - 1)) /** * struct blk_stat_callback - Block statistics callback. @@ -73,12 +80,6 @@ void blk_free_queue_stats(struct blk_queue_stats *); void blk_stat_add(struct request *); -static inline void blk_stat_set_issue_time(struct blk_issue_stat *stat) -{ - stat->time = ((stat->time & BLK_STAT_MASK) | - (ktime_to_ns(ktime_get()) & BLK_STAT_TIME_MASK)); -} - static inline u64 __blk_stat_time(u64 time) { return time & BLK_STAT_TIME_MASK; @@ -86,7 +87,25 @@ static inline u64 __blk_stat_time(u64 time) static inline u64 blk_stat_time(struct blk_issue_stat *stat) { - return __blk_stat_time(stat->time); + return __blk_stat_time(stat->stat); +} + +static inline sector_t blk_capped_size(sector_t size) +{ + return size & ((1ULL << BLK_STAT_SIZE_BITS) - 1); +} + +static inline sector_t blk_stat_size(struct blk_issue_stat *stat) +{ + return (stat->stat & BLK_STAT_SIZE_MASK) >> BLK_STAT_SIZE_SHIFT; +} + +static inline void blk_stat_set_issue(struct blk_issue_stat *stat, + sector_t size) +{ + stat->stat = (stat->stat & BLK_STAT_RES_MASK) | + (ktime_to_ns(ktime_get()) & BLK_STAT_TIME_MASK) | + (((u64)blk_capped_size(size)) << BLK_STAT_SIZE_SHIFT); } /* diff --git a/block/blk-wbt.h b/block/blk-wbt.h index 591ff2f4b2ee..ad6c78507c3a 100644 --- a/block/blk-wbt.h +++ b/block/blk-wbt.h @@ -32,27 +32,27 @@ enum { static inline void wbt_clear_state(struct blk_issue_stat *stat) { - stat->time &= BLK_STAT_TIME_MASK; + stat->stat &= ~BLK_STAT_RES_MASK; } static inline enum wbt_flags wbt_stat_to_mask(struct blk_issue_stat *stat) { - return (stat->time & BLK_STAT_MASK) >> BLK_STAT_SHIFT; + return (stat->stat & BLK_STAT_RES_MASK) >> BLK_STAT_RES_SHIFT; } static inline void wbt_track(struct blk_issue_stat *stat, enum wbt_flags wb_acct) { - stat->time |= ((u64) wb_acct) << BLK_STAT_SHIFT; + stat->stat |= ((u64) wb_acct) << BLK_STAT_RES_SHIFT; } static inline bool wbt_is_tracked(struct blk_issue_stat *stat) { - return (stat->time >> BLK_STAT_SHIFT) & WBT_TRACKED; + return (stat->stat >> BLK_STAT_RES_SHIFT) & WBT_TRACKED; } static inline bool wbt_is_read(struct blk_issue_stat *stat) { - return (stat->time >> BLK_STAT_SHIFT) & WBT_READ; + return (stat->stat >> BLK_STAT_RES_SHIFT) & WBT_READ; } struct rq_wait { |