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    Subject[PATCH -mm 2/3] i/o controller infrastructure
    Date
    This is the core io-throttle kernel infrastructure. It creates the basic
    interfaces to cgroups and implements the I/O measurement and throttling
    functions.

    Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
    ---
    block/Makefile | 2 ++
    include/linux/cgroup_subsys.h | 6 ++++++
    init/Kconfig | 10 ++++++++++
    3 files changed, 18 insertions(+), 0 deletions(-)

    diff --git a/block/Makefile b/block/Makefile
    index 208000b..b3afc86 100644
    --- a/block/Makefile
    +++ b/block/Makefile
    @@ -13,6 +13,8 @@ obj-$(CONFIG_IOSCHED_AS) += as-iosched.o
    obj-$(CONFIG_IOSCHED_DEADLINE) += deadline-iosched.o
    obj-$(CONFIG_IOSCHED_CFQ) += cfq-iosched.o

    +obj-$(CONFIG_CGROUP_IO_THROTTLE) += blk-io-throttle.o
    +
    obj-$(CONFIG_BLK_DEV_IO_TRACE) += blktrace.o
    obj-$(CONFIG_BLOCK_COMPAT) += compat_ioctl.o
    obj-$(CONFIG_BLK_DEV_INTEGRITY) += blk-integrity.o
    diff --git a/include/linux/cgroup_subsys.h b/include/linux/cgroup_subsys.h
    index 23c02e2..198ee52 100644
    --- a/include/linux/cgroup_subsys.h
    +++ b/include/linux/cgroup_subsys.h
    @@ -52,3 +52,9 @@ SUBSYS(memrlimit_cgroup)
    #endif

    /* */
    +
    +#ifdef CONFIG_CGROUP_IO_THROTTLE
    +SUBSYS(iothrottle)
    +#endif
    +
    +/* */
    diff --git a/init/Kconfig b/init/Kconfig
    index a451916..39691c2 100644
    --- a/init/Kconfig
    +++ b/init/Kconfig
    @@ -306,6 +306,16 @@ config CGROUP_DEVICE
    Provides a cgroup implementing whitelists for devices which
    a process in the cgroup can mknod or open.

    +config CGROUP_IO_THROTTLE
    + bool "Enable cgroup I/O throttling (EXPERIMENTAL)"
    + depends on CGROUPS && EXPERIMENTAL
    + help
    + This allows to limit the maximum I/O bandwidth for specific
    + cgroup(s).
    + See Documentation/controllers/io-throttle.txt for more information.
    +
    + If unsure, say N.
    +
    config CPUSETS
    bool "Cpuset support"
    depends on SMP && CGROUPS
    --
    1.5.4.3


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