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authorTejun Heo <tj@kernel.org>2012-04-01 14:38:44 -0700
committerTejun Heo <tj@kernel.org>2012-04-01 14:38:44 -0700
commit155fead9b6347ead90e0b0396cb108a6ba6126c6 (patch)
tree7e14bb87d942561aa5f44ac8a2d09d6e546c6ccb /block/blk-cgroup.c
parent9ade5ea4ce57d3596eaee6a57cd212a483674058 (diff)
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blkcg: move blkio_group_stats to cfq-iosched.c
blkio_group_stats contains only fields used by cfq and has no reason to be defined in blkcg core. * Move blkio_group_stats to cfq-iosched.c and rename it to cfqg_stats. * blkg_policy_data->stats is replaced with cfq_group->stats. blkg_prfill_[rw]stat() are updated to use offset against pd->pdata instead. * All related macros / functions are renamed so that they have cfqg_ prefix and the unnecessary @pol arguments are dropped. * All stat functions now take cfq_group * instead of blkio_group *. * lockdep assertion on queue lock dropped. Elevator runs under queue lock by default. There isn't much to be gained by adding lockdep assertions at stat function level. * cfqg_stats_reset() implemented for blkio_reset_group_stats_fn method so that cfqg->stats can be reset. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'block/blk-cgroup.c')
-rw-r--r--block/blk-cgroup.c23
1 files changed, 2 insertions, 21 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 2e6fb7d91805..cfdda44f4a0b 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -417,25 +417,6 @@ blkiocg_reset_stats(struct cgroup *cgroup, struct cftype *cftype, u64 val)
struct blkio_policy_type *pol;
list_for_each_entry(pol, &blkio_list, list) {
- struct blkg_policy_data *pd = blkg->pd[pol->plid];
- struct blkio_group_stats *stats = &pd->stats;
-
- /* queued stats shouldn't be cleared */
- blkg_rwstat_reset(&stats->service_bytes);
- blkg_rwstat_reset(&stats->serviced);
- blkg_rwstat_reset(&stats->merged);
- blkg_rwstat_reset(&stats->service_time);
- blkg_rwstat_reset(&stats->wait_time);
- blkg_stat_reset(&stats->time);
-#ifdef CONFIG_DEBUG_BLK_CGROUP
- blkg_stat_reset(&stats->unaccounted_time);
- blkg_stat_reset(&stats->avg_queue_size_sum);
- blkg_stat_reset(&stats->avg_queue_size_samples);
- blkg_stat_reset(&stats->dequeue);
- blkg_stat_reset(&stats->group_wait_time);
- blkg_stat_reset(&stats->idle_time);
- blkg_stat_reset(&stats->empty_time);
-#endif
blkio_reset_stats_cpu(blkg, pol->plid);
if (pol->ops.blkio_reset_group_stats_fn)
@@ -549,13 +530,13 @@ static u64 blkg_prfill_stat(struct seq_file *sf, struct blkg_policy_data *pd,
int off)
{
return __blkg_prfill_u64(sf, pd,
- blkg_stat_read((void *)&pd->stats + off));
+ blkg_stat_read((void *)pd->pdata + off));
}
static u64 blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd,
int off)
{
- struct blkg_rwstat rwstat = blkg_rwstat_read((void *)&pd->stats + off);
+ struct blkg_rwstat rwstat = blkg_rwstat_read((void *)pd->pdata + off);
return __blkg_prfill_rwstat(sf, pd, &rwstat);
}