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block: move call of scheduler's ->completed_request() hook 

Commit 4bc6339a58 ("block: move blk_stat_add() to
__blk_mq_end_request()") consolidated some calls using ktime_get() so
we'd only need to call it once. Kyber's ->completed_request() hook also
calls ktime_get(), so let's move it to the same place, too.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Omar Sandoval 2018-09-27 15:55:51 -07:00 committed by Jens Axboe
parent 986d413b7c
commit ed88660a53
4 changed files with 8 additions and 8 deletions
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4
block/blk-mq-sched.h
View File

@ -49,12 +49,12 @@ blk_mq_sched_allow_merge(struct request_queue *q, struct request *rq,
return true;
}
static inline void blk_mq_sched_completed_request(struct request *rq)
static inline void blk_mq_sched_completed_request(struct request *rq, u64 now)
{
struct elevator_queue *e = rq->q->elevator;
if (e && e->type->ops.mq.completed_request)
e->type->ops.mq.completed_request(rq);
e->type->ops.mq.completed_request(rq, now);
}
static inline void blk_mq_sched_started_request(struct request *rq)

5
block/blk-mq.c
View File

@ -528,6 +528,9 @@ inline void __blk_mq_end_request(struct request *rq, blk_status_t error)
blk_stat_add(rq, now);
}
if (rq->internal_tag != -1)
blk_mq_sched_completed_request(rq, now);
blk_account_io_done(rq, now);
if (rq->end_io) {
@ -564,8 +567,6 @@ static void __blk_mq_complete_request(struct request *rq)
if (!blk_mq_mark_complete(rq))
return;
if (rq->internal_tag != -1)
blk_mq_sched_completed_request(rq);
if (!test_bit(QUEUE_FLAG_SAME_COMP, &rq->q->queue_flags)) {
rq->q->softirq_done_fn(rq);

5
block/kyber-iosched.c
View File

@ -558,12 +558,12 @@ static void kyber_finish_request(struct request *rq)
rq_clear_domain_token(kqd, rq);
}
static void kyber_completed_request(struct request *rq)
static void kyber_completed_request(struct request *rq, u64 now)
{
struct request_queue *q = rq->q;
struct kyber_queue_data *kqd = q->elevator->elevator_data;
unsigned int sched_domain;
u64 now, latency, target;
u64 latency, target;
/*
* Check if this request met our latency goal. If not, quickly gather
@ -585,7 +585,6 @@ static void kyber_completed_request(struct request *rq)
if (blk_stat_is_active(kqd->cb))
return;
now = ktime_get_ns();
if (now < rq->io_start_time_ns)
return;

2
include/linux/elevator.h
View File

@ -111,7 +111,7 @@ struct elevator_mq_ops {
void (*insert_requests)(struct blk_mq_hw_ctx *, struct list_head *, bool);
struct request *(*dispatch_request)(struct blk_mq_hw_ctx *);
bool (*has_work)(struct blk_mq_hw_ctx *);
void (*completed_request)(struct request *);
void (*completed_request)(struct request *, u64);
void (*started_request)(struct request *);
void (*requeue_request)(struct request *);
struct request *(*former_request)(struct request_queue *, struct request *);