diff options
| author |   Christoph Hellwig <hch@lst.de> | 2019-06-06 12:26:22 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2019-06-20 10:32:34 -0600 |
| commit | c0ce79dca5b0e8373a546ebea2af7b3df94c584e (patch) | |
| tree | 2039ddde7e970451a75d78b433177b0b42199282 /block/blk-cgroup.c | |
| parent | blk-cgroup: introduce a new struct blkg_rwstat_sample (diff) | |
| download | linux-dev-c0ce79dca5b0e8373a546ebea2af7b3df94c584e.tar.xz linux-dev-c0ce79dca5b0e8373a546ebea2af7b3df94c584e.zip | |
blk-cgroup: move struct blkg_stat to bfq
This structure and assorted infrastructure is only used by the bfq I/O
scheduler. Move it there instead of bloating the common code.
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 664c09866839..53b7bd4c7000 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -573,20 +573,6 @@ u64 __blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd, EXPORT_SYMBOL_GPL(__blkg_prfill_rwstat); /** - * blkg_prfill_stat - prfill callback for blkg_stat - * @sf: seq_file to print to - * @pd: policy private data of interest - * @off: offset to the blkg_stat in @pd - * - * prfill callback for printing a blkg_stat. - */ -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 + off)); -} -EXPORT_SYMBOL_GPL(blkg_prfill_stat); - -/** * blkg_prfill_rwstat - prfill callback for blkg_rwstat * @sf: seq_file to print to * @pd: policy private data of interest @@ -688,48 +674,6 @@ int blkg_print_stat_ios_recursive(struct seq_file *sf, void *v) EXPORT_SYMBOL_GPL(blkg_print_stat_ios_recursive); /** - * blkg_stat_recursive_sum - collect hierarchical blkg_stat - * @blkg: blkg of interest - * @pol: blkcg_policy which contains the blkg_stat - * @off: offset to the blkg_stat in blkg_policy_data or @blkg - * - * Collect the blkg_stat specified by @blkg, @pol and @off and all its - * online descendants and their aux counts. The caller must be holding the - * queue lock for online tests. - * - * If @pol is NULL, blkg_stat is at @off bytes into @blkg; otherwise, it is - * at @off bytes into @blkg's blkg_policy_data of the policy. - */ -u64 blkg_stat_recursive_sum(struct blkcg_gq *blkg, - struct blkcg_policy *pol, int off) -{ - struct blkcg_gq *pos_blkg; - struct cgroup_subsys_state *pos_css; - u64 sum = 0; - - lockdep_assert_held(&blkg->q->queue_lock); - - rcu_read_lock(); - blkg_for_each_descendant_pre(pos_blkg, pos_css, blkg) { - struct blkg_stat *stat; - - if (!pos_blkg->online) - continue; - - if (pol) - stat = (void *)blkg_to_pd(pos_blkg, pol) + off; - else - stat = (void *)blkg + off; - - sum += blkg_stat_read(stat) + atomic64_read(&stat->aux_cnt); - } - rcu_read_unlock(); - - return sum; -} -EXPORT_SYMBOL_GPL(blkg_stat_recursive_sum); - -/** * blkg_rwstat_recursive_sum - collect hierarchical blkg_rwstat * @blkg: blkg of interest * @pol: blkcg_policy which contains the blkg_rwstat |