block: cgroups, kconfig, build bits for BFQ-v6r2-3.3 (d9e3f7c5) · Commits · e / devices / android_kernel_samsung_smdk4412

block/Kconfig.iosched

+26 −0

Original line number	Diff line number	Diff line
		@@ -78,6 +78,28 @@ config IOSCHED_FIOPS
		IOPS equally among all processes in the system. It's mainly for
		Flash based storage.

		config IOSCHED_BFQ
		tristate "BFQ I/O scheduler"
		depends on EXPERIMENTAL
		default y
		---help---
		The BFQ I/O scheduler tries to distribute bandwidth among
		all processes according to their weights.
		It aims at distributing the bandwidth as desired, independently of
		the disk parameters and with any workload. It also tries to
		guarantee low latency to interactive and soft real-time
		applications. If compiled built-in (saying Y here), BFQ can
		be configured to support hierarchical scheduling.

		config CGROUP_BFQIO
		bool "BFQ hierarchical scheduling support"
		depends on CGROUPS && IOSCHED_BFQ=y
		default n
		---help---
		Enable hierarchical scheduling in BFQ, using the cgroups
		filesystem interface. The name of the subsystem will be
		bfqio.

		choice
		prompt "Default I/O scheduler"
		default DEFAULT_CFQ
		@@ -104,6 +126,9 @@ choice
		config DEFAULT_FIOPS
		bool "FIOPS" if IOSCHED_FIOPS=y

		config DEFAULT_BFQ
		bool "BFQ" if IOSCHED_BFQ=y

		config DEFAULT_NOOP
		bool "No-op"

		@@ -117,6 +142,7 @@ endchoice
		config DEFAULT_IOSCHED
		string
		default "deadline" if DEFAULT_DEADLINE
		default "bfq" if DEFAULT_BFQ
		default "row" if DEFAULT_ROW
		default "cfq" if DEFAULT_CFQ
		default "fiops" if DEFAULT_FIOPS

+1 −0

Original line number	Diff line number	Diff line
		@@ -12,6 +12,7 @@ obj-$(CONFIG_BLK_CGROUP) += blk-cgroup.o
		obj-$(CONFIG_BLK_DEV_THROTTLING) += blk-throttle.o
		obj-$(CONFIG_IOSCHED_NOOP) += noop-iosched.o
		obj-$(CONFIG_IOSCHED_DEADLINE) += deadline-iosched.o
		obj-$(CONFIG_IOSCHED_BFQ) += bfq-iosched.o
		obj-$(CONFIG_IOSCHED_ROW) += row-iosched.o
		obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched.o
		obj-$(CONFIG_IOSCHED_SIO) += sio-iosched.o

+6 −0