diff options
| author | Paolo Valente <paolo.valente@unimore.it> | 2015-04-07 13:39:12 +0200 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2019-12-23 23:43:41 +0200 |
| commit | f2de888c84890eab95ac11c35ef38a03e0853c19 (patch) | |
| tree | 456d48009a001e6fbebf2d114384db90277c7474 /block | |
| parent | e7ba6fec9e688b08ce51a21efc096913b16875a8 (diff) | |
block: cgroups, kconfig, build bits for BFQ-v7r11-4.4.0
Update Kconfig.iosched and do the related Makefile changes to include
kernel configuration options for BFQ. Also increase the number of
policies supported by the blkio controller so that BFQ can add its
own.
Change-Id: I61d9006d10c536a621437e7457e3b7272f308617
Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Arianna Avanzini <avanzini@google.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/Kconfig.iosched | 32 | ||||
| -rw-r--r-- | block/Makefile | 1 |
2 files changed, 33 insertions, 0 deletions
diff --git a/block/Kconfig.iosched b/block/Kconfig.iosched index af3d6a330982..86e3e39fd2e0 100644 --- a/block/Kconfig.iosched +++ b/block/Kconfig.iosched @@ -50,6 +50,27 @@ config CFQ_GROUP_IOSCHED ---help--- Enable group IO scheduling in CFQ. +config IOSCHED_BFQ + tristate "BFQ I/O scheduler" + default n + ---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 @@ -63,6 +84,16 @@ choice config DEFAULT_CFQ bool "CFQ" if IOSCHED_CFQ=y + config DEFAULT_BFQ + bool "BFQ" if IOSCHED_BFQ=y + help + Selects BFQ as the default I/O scheduler which will be + used by default for all block devices. + The BFQ I/O scheduler 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. + config DEFAULT_NOOP bool "No-op" @@ -72,6 +103,7 @@ config DEFAULT_IOSCHED string default "deadline" if DEFAULT_DEADLINE default "cfq" if DEFAULT_CFQ + default "bfq" if DEFAULT_BFQ default "noop" if DEFAULT_NOOP endmenu diff --git a/block/Makefile b/block/Makefile index ba63d68fe91d..f20a76107073 100644 --- a/block/Makefile +++ b/block/Makefile @@ -18,6 +18,7 @@ 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_CFQ) += cfq-iosched.o +obj-$(CONFIG_IOSCHED_BFQ) += bfq-iosched.o obj-$(CONFIG_IOSCHED_TEST) += test-iosched.o obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o |