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blkio: Remove per-cfqq nr_sectors as we'll be passing

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that info at request dispatch with other stats now. This patch removes the
existing support for accounting sectors for a blkio_group. This will be added
back differently in the next two patches.

Signed-off-by: Divyesh Shah<dpshah@google.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Divyesh Shah 2010-04-01 15:01:04 -07:00 committed by Jens Axboe
parent ed6b6dc7c1
commit 9a0785b0da
3 changed files with 5 additions and 14 deletions
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3
block/blk-cgroup.c
View File

@ -56,10 +56,9 @@ struct blkio_cgroup *cgroup_to_blkio_cgroup(struct cgroup *cgroup)
EXPORT_SYMBOL_GPL(cgroup_to_blkio_cgroup);
void blkiocg_update_blkio_group_stats(struct blkio_group *blkg,
unsigned long time, unsigned long sectors)
unsigned long time)
{
blkg->time += time;
blkg->sectors += sectors;
}
EXPORT_SYMBOL_GPL(blkiocg_update_blkio_group_stats);

6
block/blk-cgroup.h
View File

@ -106,7 +106,7 @@ extern int blkiocg_del_blkio_group(struct blkio_group *blkg);
extern struct blkio_group *blkiocg_lookup_group(struct blkio_cgroup *blkcg,
void *key);
void blkiocg_update_blkio_group_stats(struct blkio_group *blkg,
unsigned long time, unsigned long sectors);
unsigned long time);
#else
struct cgroup;
static inline struct blkio_cgroup *
@ -123,8 +123,6 @@ blkiocg_del_blkio_group(struct blkio_group *blkg) { return 0; }
static inline struct blkio_group *
blkiocg_lookup_group(struct blkio_cgroup *blkcg, void *key) { return NULL; }
static inline void blkiocg_update_blkio_group_stats(struct blkio_group *blkg,
unsigned long time, unsigned long sectors)
{
}
unsigned long time) {}
#endif
#endif /* _BLK_CGROUP_H */

10
block/cfq-iosched.c
View File

@ -142,8 +142,6 @@ struct cfq_queue {
struct cfq_queue *new_cfqq;
struct cfq_group *cfqg;
struct cfq_group *orig_cfqg;
/* Sectors dispatched in current dispatch round */
unsigned long nr_sectors;
};
/*
@ -883,8 +881,7 @@ static inline unsigned int cfq_cfqq_slice_usage(struct cfq_queue *cfqq)
slice_used = cfqq->allocated_slice;
}
cfq_log_cfqq(cfqq->cfqd, cfqq, "sl_used=%u sect=%lu", slice_used,
cfqq->nr_sectors);
cfq_log_cfqq(cfqq->cfqd, cfqq, "sl_used=%u", slice_used);
return slice_used;
}
@ -918,8 +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,
cfqq->nr_sectors);
blkiocg_update_blkio_group_stats(&cfqg->blkg, used_sl);
}
#ifdef CONFIG_CFQ_GROUP_IOSCHED
@ -1525,7 +1521,6 @@ static void __cfq_set_active_queue(struct cfq_data *cfqd,
cfqq->allocated_slice = 0;
cfqq->slice_end = 0;
cfqq->slice_dispatch = 0;
cfqq->nr_sectors = 0;
cfq_clear_cfqq_wait_request(cfqq);
cfq_clear_cfqq_must_dispatch(cfqq);
@ -1870,7 +1865,6 @@ 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)]++;
cfqq->nr_sectors += blk_rq_sectors(rq);
}
/*