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| author | Arianna Avanzini <avanzini.arianna@gmail.com> | 2014-01-27 23:50:08 +0100 |
|---|---|---|
| committer | Ziyan <jaraidaniel@gmail.com> | 2016-01-08 10:44:35 +0100 |
| commit | f3d7fa99fc1e7048d51fae76b64483ade2271000 (patch) | |
| tree | fba5f0f918f52016fba97b2d9e9005a09b4d5870 /block | |
| parent | b015704450eb727e84c6bc11d7be4052c3ccec0c (diff) | |
| download | kernel_samsung_tuna-f3d7fa99fc1e7048d51fae76b64483ade2271000.zip kernel_samsung_tuna-f3d7fa99fc1e7048d51fae76b64483ade2271000.tar.gz kernel_samsung_tuna-f3d7fa99fc1e7048d51fae76b64483ade2271000.tar.bz2 | |
block: cgroups, kconfig, build bits for BFQ-v7r8-3.3
Update Kconfig.iosched and do the related Makefile changes to include
kernel configuration options for BFQ. Also add the bfqio controller
to the cgroups subsystem.
Change-Id: Ibfa07cfada5447b0777429e7d7a7c80e7137c7a3
Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Arianna Avanzini <avanzini.arianna@gmail.com>
Signed-off-by: D. Andrei Măceș <dmaces@nd.edu>
Diffstat (limited to 'block')
| -rw-r--r-- | block/Kconfig.iosched | 33 | ||||
| -rw-r--r-- | block/Makefile | 1 |
2 files changed, 34 insertions, 0 deletions
diff --git a/block/Kconfig.iosched b/block/Kconfig.iosched index 3199b76..2b6d805 100644 --- a/block/Kconfig.iosched +++ b/block/Kconfig.iosched @@ -43,6 +43,28 @@ config CFQ_GROUP_IOSCHED ---help--- Enable group IO scheduling in CFQ. +config IOSCHED_BFQ + tristate "BFQ I/O scheduler" + depends on EXPERIMENTAL + 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 @@ -56,6 +78,16 @@ 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" @@ -65,6 +97,7 @@ 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 0fec4b3..22d8608 100644 --- a/block/Makefile +++ b/block/Makefile @@ -13,6 +13,7 @@ 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_BLOCK_COMPAT) += compat_ioctl.o obj-$(CONFIG_BLK_DEV_INTEGRITY) += blk-integrity.o |