feat: enable BFQ IO scheduler

The BFQ I/O scheduler, particularly in its low_latency mode, is useful for
HDD-based deployments and/or where low latency is preferred over peak throughput.

Signed-off-by: Dennis Marttinen <twelho@welho.tech>
Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>

kernel/build/config-amd64

@@ -909,6 +909,7 @@ CONFIG_BLOCK_LEGACY_AUTOLOAD=y
 CONFIG_BLK_CGROUP_RWSTAT=y
 CONFIG_BLK_CGROUP_PUNT_BIO=y
 CONFIG_BLK_DEV_BSG_COMMON=y
+CONFIG_BLK_ICQ=y
 CONFIG_BLK_DEV_BSGLIB=y
 # CONFIG_BLK_DEV_INTEGRITY is not set
 # CONFIG_BLK_DEV_ZONED is not set
@@ -959,7 +960,9 @@ CONFIG_BLK_MQ_STACKING=y
 #
 CONFIG_MQ_IOSCHED_DEADLINE=y
 CONFIG_MQ_IOSCHED_KYBER=y
-# CONFIG_IOSCHED_BFQ is not set
+CONFIG_IOSCHED_BFQ=y
+CONFIG_BFQ_GROUP_IOSCHED=y
+# CONFIG_BFQ_CGROUP_DEBUG is not set
 # end of IO Schedulers
 
 CONFIG_PREEMPT_NOTIFIERS=y

kernel/build/config-arm64

@@ -892,6 +892,7 @@ CONFIG_BLOCK_LEGACY_AUTOLOAD=y
 CONFIG_BLK_CGROUP_RWSTAT=y
 CONFIG_BLK_CGROUP_PUNT_BIO=y
 CONFIG_BLK_DEV_BSG_COMMON=y
+CONFIG_BLK_ICQ=y
 CONFIG_BLK_DEV_BSGLIB=y
 CONFIG_BLK_DEV_INTEGRITY=y
 CONFIG_BLK_DEV_INTEGRITY_T10=y
@@ -943,7 +944,9 @@ CONFIG_BLK_MQ_STACKING=y
 #
 CONFIG_MQ_IOSCHED_DEADLINE=y
 CONFIG_MQ_IOSCHED_KYBER=y
-# CONFIG_IOSCHED_BFQ is not set
+CONFIG_IOSCHED_BFQ=y
+CONFIG_BFQ_GROUP_IOSCHED=y
+# CONFIG_BFQ_CGROUP_DEBUG is not set
 # end of IO Schedulers
 
 CONFIG_PREEMPT_NOTIFIERS=y