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blkcg: implement blkio_policy_type->cftypes
Add blkiop->cftypes which is added and removed together with the policy. This will be used to move conf/stat handling to the policies. Signed-off-by: Tejun Heo <tj@kernel.org>
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parent
829fdb5000
commit
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2 changed files with 7 additions and 0 deletions
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@ -1538,6 +1538,9 @@ void blkio_policy_register(struct blkio_policy_type *blkiop)
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list_for_each_entry(q, &all_q_list, all_q_node)
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list_for_each_entry(q, &all_q_list, all_q_node)
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update_root_blkg_pd(q, blkiop->plid);
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update_root_blkg_pd(q, blkiop->plid);
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blkcg_bypass_end();
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blkcg_bypass_end();
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if (blkiop->cftypes)
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WARN_ON(cgroup_add_cftypes(&blkio_subsys, blkiop->cftypes));
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}
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}
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EXPORT_SYMBOL_GPL(blkio_policy_register);
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EXPORT_SYMBOL_GPL(blkio_policy_register);
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@ -1545,6 +1548,9 @@ void blkio_policy_unregister(struct blkio_policy_type *blkiop)
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{
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{
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struct request_queue *q;
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struct request_queue *q;
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if (blkiop->cftypes)
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cgroup_rm_cftypes(&blkio_subsys, blkiop->cftypes);
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blkcg_bypass_start();
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blkcg_bypass_start();
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spin_lock(&blkio_list_lock);
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spin_lock(&blkio_list_lock);
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@ -181,6 +181,7 @@ struct blkio_policy_type {
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struct blkio_policy_ops ops;
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struct blkio_policy_ops ops;
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enum blkio_policy_id plid;
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enum blkio_policy_id plid;
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size_t pdata_size; /* policy specific private data size */
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size_t pdata_size; /* policy specific private data size */
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struct cftype *cftypes; /* cgroup files for the policy */
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};
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};
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extern int blkcg_init_queue(struct request_queue *q);
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extern int blkcg_init_queue(struct request_queue *q);
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