commit 1d156646e0d8ec390e5d5ac288137df02d4207be
author Tejun Heo <tj@kernel.org> Thu Nov 07 11:18:04 2019 -0800
committer Jens Axboe <axboe@kernel.dk> Thu Nov 07 12:28:13 2019 -0700
tree ac8219a4da32a25ace792ac1d8775e890c34b127
parent f73316482977ac401ac37245c9df48079d4e11f3

blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT

blkg_rwstat is now only used by bfq-iosched and blk-throtl when on
cgroup1.  Let's move it into its own files and gate it behind a config
option.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/Kconfig.iosched

diff --git a/block/Kconfig.iosched b/block/Kconfig.iosched
index b89310a..7df1413 100644
--- a/block/Kconfig.iosched
+++ b/block/Kconfig.iosched
@@ -31,6 +31,7 @@
 config BFQ_GROUP_IOSCHED
        bool "BFQ hierarchical scheduling support"
        depends on IOSCHED_BFQ && BLK_CGROUP
+       select BLK_CGROUP_RWSTAT
        ---help---
 
        Enable hierarchical scheduling in BFQ, using the blkio