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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - block/blk-stat.h
5 * ~0.13s window as a power-of-2 (2^27 nsecs)
7 #define BLK_STAT_NSEC 134217728ULL
8 #define BLK_STAT_NSEC_MASK ~(BLK_STAT_NSEC - 1)
11 * Upper 3 bits can be used elsewhere
13 #define BLK_STAT_RES_BITS 3
14 #define BLK_STAT_SHIFT (64 - BLK_STAT_RES_BITS)
15 #define BLK_STAT_TIME_MASK ((1ULL << BLK_STAT_SHIFT) - 1)
16 #define BLK_STAT_MASK ~BLK_STAT_TIME_MASK
23 void blk_stat_add(struct blk_rq_stat
*, struct request
*);
24 void blk_hctx_stat_get(struct blk_mq_hw_ctx
*, struct blk_rq_stat
*);
25 void blk_queue_stat_get(struct request_queue
*, struct blk_rq_stat
*);
26 void blk_stat_clear(struct request_queue
*);
27 void blk_stat_init(struct blk_rq_stat
*);
28 bool blk_stat_is_current(struct blk_rq_stat
*);
29 void blk_stat_set_issue_time(struct blk_issue_stat
*);
30 bool blk_stat_enable(struct request_queue
*);
32 static inline u64
__blk_stat_time(u64 time
)
34 return time
& BLK_STAT_TIME_MASK
;
37 static inline u64
blk_stat_time(struct blk_issue_stat
*stat
)
39 return __blk_stat_time(stat
->time
);