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authorTejun Heo <tj@kernel.org>2015-08-19 00:55:23 +0300
committerJens Axboe <axboe@fb.com>2015-08-19 01:49:17 +0300
commitf12c74cab1635d67077ce8cc40da88b57980f637 (patch)
tree250f9f3c6aa271f8a6899da86598666f67bce20c /include/linux/blk-cgroup.h
parent24bdb8ef068ebdc2a57ce715f0ab22d5da32832a (diff)
downloadlinux-f12c74cab1635d67077ce8cc40da88b57980f637.tar.xz
blkcg: make blkg_[rw]stat_recursive_sum() to be able to index into blkcg_gq
Currently, blkg_[rw]stat_recursive_sum() assume that the target counter is located in pd (blkg_policy_data); however, some counters are planned to be moved to blkg (blkcg_gq). This patch updates blkg_[rw]stat_recursive_sum() to take blkg and blkg_policy pointers instead of pd. If policy is NULL, it indexes into blkg. If non-NULL, into the blkg's pd of the policy. The existing usages are updated to maintain the current behaviors. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/blk-cgroup.h')
-rw-r--r--include/linux/blk-cgroup.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index fdc7ac08b1ce..4630ce8f9425 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -191,9 +191,10 @@ u64 blkg_prfill_stat(struct seq_file *sf, struct blkg_policy_data *pd, int off);
u64 blkg_prfill_rwstat(struct seq_file *sf, struct blkg_policy_data *pd,
int off);
-u64 blkg_stat_recursive_sum(struct blkg_policy_data *pd, int off);
-struct blkg_rwstat blkg_rwstat_recursive_sum(struct blkg_policy_data *pd,
- int off);
+u64 blkg_stat_recursive_sum(struct blkcg_gq *blkg,
+ struct blkcg_policy *pol, int off);
+struct blkg_rwstat blkg_rwstat_recursive_sum(struct blkcg_gq *blkg,
+ struct blkcg_policy *pol, int off);
struct blkg_conf_ctx {
struct gendisk *disk;