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authorTejun Heo <tj@kernel.org>2012-03-05 13:14:54 -0800
committerJens Axboe <axboe@kernel.dk>2012-03-06 21:27:21 +0100
commit32e380aedc3de454c06ce1c254fe3bea35a676e1 (patch)
treeae48ced36af22f020451cb05ecca835ff561dc9d /block/Kconfig.iosched
parentb855b04a0b2213dbc1b59cf936056726e7ed97ad (diff)
downloadkernel-32e380aedc3de454c06ce1c254fe3bea35a676e1.tar.gz
blkcg: make CONFIG_BLK_CGROUP bool
Block cgroup core can be built as module; however, it isn't too useful as blk-throttle can only be built-in and cfq-iosched is usually the default built-in scheduler. Scheduled blkcg cleanup requires calling into blkcg from block core. To simplify that, disallow building blkcg as module by making CONFIG_BLK_CGROUP bool. If building blkcg core as module really matters, which I doubt, we can revisit it after blkcg API cleanup. -v2: Vivek pointed out that IOSCHED_CFQ was incorrectly updated to depend on BLK_CGROUP. Fixed. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/Kconfig.iosched')
-rw-r--r--block/Kconfig.iosched4
1 files changed, 0 insertions, 4 deletions
diff --git a/block/Kconfig.iosched b/block/Kconfig.iosched
index 3199b76f795d..421bef9c4c48 100644
--- a/block/Kconfig.iosched
+++ b/block/Kconfig.iosched
@@ -23,8 +23,6 @@ config IOSCHED_DEADLINE
config IOSCHED_CFQ
tristate "CFQ I/O scheduler"
- # If BLK_CGROUP is a module, CFQ has to be built as module.
- depends on (BLK_CGROUP=m && m) || !BLK_CGROUP || BLK_CGROUP=y
default y
---help---
The CFQ I/O scheduler tries to distribute bandwidth equally
@@ -34,8 +32,6 @@ config IOSCHED_CFQ
This is the default I/O scheduler.
- Note: If BLK_CGROUP=m, then CFQ can be built only as module.
-
config CFQ_GROUP_IOSCHED
bool "CFQ Group Scheduling support"
depends on IOSCHED_CFQ && BLK_CGROUP