diff options
Diffstat (limited to '5001_block-cgroups-kconfig-build-bits-for-BFQ-v7r7-4.0.patch')
| -rw-r--r-- | 5001_block-cgroups-kconfig-build-bits-for-BFQ-v7r7-4.0.patch | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/5001_block-cgroups-kconfig-build-bits-for-BFQ-v7r7-4.0.patch b/5001_block-cgroups-kconfig-build-bits-for-BFQ-v7r7-4.0.patch new file mode 100644 index 00000000..468d1573 --- /dev/null +++ b/5001_block-cgroups-kconfig-build-bits-for-BFQ-v7r7-4.0.patch @@ -0,0 +1,104 @@ +From 63e26848e2df36a3c29d2d38ce8b008539d64a5d Mon Sep 17 00:00:00 2001 +From: Paolo Valente <paolo.valente@unimore.it> +Date: Tue, 7 Apr 2015 13:39:12 +0200 +Subject: [PATCH 1/3] block: cgroups, kconfig, build bits for BFQ-v7r7-4.0 + +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. + +Signed-off-by: Paolo Valente <paolo.valente@unimore.it> +Signed-off-by: Arianna Avanzini <avanzini.arianna@gmail.com> +--- + block/Kconfig.iosched | 32 ++++++++++++++++++++++++++++++++ + block/Makefile | 1 + + include/linux/cgroup_subsys.h | 4 ++++ + 3 files changed, 37 insertions(+) + +diff --git a/block/Kconfig.iosched b/block/Kconfig.iosched +index 421bef9..0ee5f0f 100644 +--- a/block/Kconfig.iosched ++++ b/block/Kconfig.iosched +@@ -39,6 +39,27 @@ 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 +@@ -52,6 +73,16 @@ 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" + +@@ -61,6 +92,7 @@ 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 00ecc97..1ed86d5 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_BLOCK_COMPAT) += compat_ioctl.o + obj-$(CONFIG_BLK_CMDLINE_PARSER) += cmdline-parser.o +diff --git a/include/linux/cgroup_subsys.h b/include/linux/cgroup_subsys.h +index e4a96fb..267d681 100644 +--- a/include/linux/cgroup_subsys.h ++++ b/include/linux/cgroup_subsys.h +@@ -35,6 +35,10 @@ SUBSYS(freezer) + SUBSYS(net_cls) + #endif + ++#if IS_ENABLED(CONFIG_CGROUP_BFQIO) ++SUBSYS(bfqio) ++#endif ++ + #if IS_ENABLED(CONFIG_CGROUP_PERF) + SUBSYS(perf_event) + #endif +-- +2.1.0 + |