A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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blkio: Increment the blkio cgroup stats for real now

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We also add start_time_ns and io_start_time_ns fields to struct request
here to record the time when a request is created and when it is
dispatched to device. We use ns uints here as ms and jiffies are
not very useful for non-rotational media.

Signed-off-by: Divyesh Shah<[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Divyesh Shah 2010-04-01 15:01:41 -07:00 • committed by Jens Axboe
commit 9195291e5f
5 changed files with 95 additions and 9 deletions
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4
block/cfq-iosched.c
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@ -855,7 +855,7 @@ cfq_group_service_tree_del(struct cfq_data *cfqd, struct cfq_group *cfqg)
if (!RB_EMPTY_NODE(&cfqg->rb_node))
cfq_rb_erase(&cfqg->rb_node, st);
cfqg->saved_workload_slice = 0;
blkiocg_update_blkio_group_dequeue_stats(&cfqg->blkg, 1);
blkiocg_update_dequeue_stats(&cfqg->blkg, 1);
}
static inline unsigned int cfq_cfqq_slice_usage(struct cfq_queue *cfqq)
@ -1865,6 +1865,7 @@ static void cfq_dispatch_insert(struct request_queue *q, struct request *rq)
elv_dispatch_sort(q, rq);
cfqd->rq_in_flight[cfq_cfqq_sync(cfqq)]++;
blkiocg_update_request_dispatch_stats(&cfqq->cfqg->blkg, rq);
}
/*
@ -3285,6 +3286,7 @@ static void cfq_completed_request(struct request_queue *q, struct request *rq)
WARN_ON(!cfqq->dispatched);
cfqd->rq_in_driver--;
cfqq->dispatched--;
blkiocg_update_request_completion_stats(&cfqq->cfqg->blkg, rq);
cfqd->rq_in_flight[cfq_cfqq_sync(cfqq)]--;