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authorChristoph Hellwig <hch@lst.de>2019-06-06 12:26:22 +0200
committerJens Axboe <axboe@kernel.dk>2019-06-20 18:32:34 +0200
commitc0ce79dca5b0e8373a546ebea2af7b3df94c584e (patch)
tree2039ddde7e970451a75d78b433177b0b42199282 /block/blk-cgroup.c
parentblk-cgroup: introduce a new struct blkg_rwstat_sample (diff)
downloadlinux-c0ce79dca5b0e8373a546ebea2af7b3df94c584e.tar.xz
linux-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.c56
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