A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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blkio: Add io controller stats like

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- io_service_time
- io_wait_time
- io_serviced
- io_service_bytes

These stats are accumulated per operation type helping us to distinguish between
read and write, and sync and async IO. This patch does not increment any of
these stats.

Signed-off-by: Divyesh Shah<[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Divyesh Shah 2010-04-01 15:01:24 -07:00 • committed by Jens Axboe
commit 303a3acb23
3 changed files with 194 additions and 25 deletions
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2
block/cfq-iosched.c
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@ -915,7 +915,7 @@ static void cfq_group_served(struct cfq_data *cfqd, struct cfq_group *cfqg,
cfq_log_cfqg(cfqd, cfqg, "served: vt=%llu min_vt=%llu", cfqg->vdisktime,
st->min_vdisktime);
blkiocg_update_blkio_group_stats(&cfqg->blkg, used_sl);
blkiocg_update_timeslice_used(&cfqg->blkg, used_sl);
}
#ifdef CONFIG_CFQ_GROUP_IOSCHED