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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
commit8a3d26151f24e2a2ffa550890144c3d54d2edb15 (patch)
treeb99f5cf8db0abc02e39e5c5107f8d4342f81effa /block/blk-cgroup.h
parent155fead9b6347ead90e0b0396cb108a6ba6126c6 (diff)
blkcg: move blkio_group_stats_cpu and friends to blk-throttle.c
blkio_group_stats_cpu is used only by blk-throtl and has no reason to be defined in blkcg core. * Move blkio_group_stats_cpu to blk-throttle.c and rename it to tg_stats_cpu. * blkg_policy_data->stats_cpu is replaced with throtl_grp->stats_cpu. prfill functions updated accordingly. * All related macros / functions are renamed so that they have tg_ prefix and the unnecessary @pol arguments are dropped. * Per-cpu stats allocation code is also moved from blk-cgroup.c to blk-throttle.c and gets simplified to only deal with BLKIO_POLICY_THROTL. percpu stat free is performed by the exit method throtl_exit_blkio_group(). * throtl_reset_group_stats() implemented for blkio_reset_group_stats_fn method so that tg->stats_cpu can be reset. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'block/blk-cgroup.h')
-rw-r--r--block/blk-cgroup.h13
1 files changed, 0 insertions, 13 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 791570394e8..e368dd00b8c 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -64,14 +64,6 @@ struct blkg_rwstat {
uint64_t cnt[BLKG_RWSTAT_NR];
};
-/* Per cpu blkio group stats */
-struct blkio_group_stats_cpu {
- /* total bytes transferred */
- struct blkg_rwstat service_bytes;
- /* total IOs serviced, post merge */
- struct blkg_rwstat serviced;
-};
-
struct blkio_group_conf {
unsigned int weight;
u64 iops[2];
@@ -86,9 +78,6 @@ struct blkg_policy_data {
/* Configuration */
struct blkio_group_conf conf;
- /* Per cpu stats pointer */
- struct blkio_group_stats_cpu __percpu *stats_cpu;
-
/* pol->pdata_size bytes of private data used by policy impl */
char pdata[] __aligned(__alignof__(unsigned long long));
};
@@ -106,8 +95,6 @@ struct blkio_group {
struct blkg_policy_data *pd[BLKIO_NR_POLICIES];
- /* List of blkg waiting for per cpu stats memory to be allocated */
- struct list_head alloc_node;
struct rcu_head rcu_head;
};