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authorVivek Goyal <vgoyal@redhat.com>2009-12-03 12:59:43 -0500
committerJens Axboe <jens.axboe@oracle.com>2009-12-03 19:28:52 +0100
commit25bc6b07767fe77422312eda2af99c9477f76191 (patch)
tree1e0f2d5a18efb63c651df8773a6d5ad2b87d7687 /block/Kconfig.iosched
parent31e4c28d95e64f2d5d3c497a3ecf37c62de635b4 (diff)
downloadlinux-25bc6b07767fe77422312eda2af99c9477f76191.tar.gz
blkio: Introduce per cfq group weights and vdisktime calculations
o Bring in the per cfq group weight and how vdisktime is calculated for the
  group. Also bring in the functionality of updating the min_vdisktime of
  the group service tree.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/Kconfig.iosched')
-rw-r--r--block/Kconfig.iosched9
1 files changed, 8 insertions, 1 deletions
diff --git a/block/Kconfig.iosched b/block/Kconfig.iosched
index be0280deec29..fa95fa770570 100644
--- a/block/Kconfig.iosched
+++ b/block/Kconfig.iosched
@@ -23,7 +23,6 @@ config IOSCHED_DEADLINE
 
 config IOSCHED_CFQ
 	tristate "CFQ I/O scheduler"
-	select BLK_CGROUP
 	default y
 	---help---
 	  The CFQ I/O scheduler tries to distribute bandwidth equally
@@ -33,6 +32,14 @@ config IOSCHED_CFQ
 
 	  This is the default I/O scheduler.
 
+config CFQ_GROUP_IOSCHED
+	bool "CFQ Group Scheduling support"
+	depends on IOSCHED_CFQ && CGROUPS
+	select BLK_CGROUP
+	default n
+	---help---
+	  Enable group IO scheduling in CFQ.
+
 choice
 	prompt "Default I/O scheduler"
 	default DEFAULT_CFQ