diff options
| author | Tejun Heo <tj@kernel.org> | 2012-04-01 23:38:43 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2012-04-01 23:38:43 +0200 |
| commit | 44ea53de46a8b01a65ae6217f47e00b516725190 (patch) | |
| tree | 45ccff782042704818d0b3f96221c381209e4a2d /block | |
| parent | blkcg: export conf/stat helpers to prepare for reorganization (diff) | |
| download | linux-44ea53de46a8b01a65ae6217f47e00b516725190.tar.xz linux-44ea53de46a8b01a65ae6217f47e00b516725190.zip | |
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>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-cgroup.c | 6 | ||||
| -rw-r--r-- | block/blk-cgroup.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 53976f2704a5..4e714f8ddcd2 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -1538,6 +1538,9 @@ void blkio_policy_register(struct blkio_policy_type *blkiop) list_for_each_entry(q, &all_q_list, all_q_node) update_root_blkg_pd(q, blkiop->plid); blkcg_bypass_end(); + + if (blkiop->cftypes) + WARN_ON(cgroup_add_cftypes(&blkio_subsys, blkiop->cftypes)); } EXPORT_SYMBOL_GPL(blkio_policy_register); @@ -1545,6 +1548,9 @@ void blkio_policy_unregister(struct blkio_policy_type *blkiop) { struct request_queue *q; + if (blkiop->cftypes) + cgroup_rm_cftypes(&blkio_subsys, blkiop->cftypes); + blkcg_bypass_start(); spin_lock(&blkio_list_lock); diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index 361ecfa4d28d..fa744d57bebb 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -181,6 +181,7 @@ struct blkio_policy_type { struct blkio_policy_ops ops; enum blkio_policy_id plid; size_t pdata_size; /* policy specific private data size */ + struct cftype *cftypes; /* cgroup files for the policy */ }; extern int blkcg_init_queue(struct request_queue *q); |