buildroot: split Kernel config options to Config-kernel.in
The number of Linux kernel related config options has become quite big over the past few months, they deserve their own Config-kernel.in file. Signed-off-by: Florian Fainelli <florian@openwrt.org> SVN-Revision: 38524
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Florian Fainelli
parent
857a7a0124
commit
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2 changed files with 421 additions and 417 deletions
420
Config-kernel.in
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420
Config-kernel.in
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config KERNEL_DEBUG_FS
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bool "Compile the kernel with Debug FileSystem enabled"
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default y
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help
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debugfs is a virtual file system that kernel developers use to put
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debugging files into. Enable this option to be able to read and
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write to these files.
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config KERNEL_PERF_EVENTS
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bool
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default n
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config KERNEL_PROFILING
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bool "Compile the kernel with profiling enabled"
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default n
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select KERNEL_PERF_EVENTS
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help
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Enable the extended profiling support mechanisms used by profilers such
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as OProfile.
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config KERNEL_KALLSYMS
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bool "Compile the kernel with symbol table information"
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default y
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help
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This will give you more information in stack traces from kernel oopses
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config KERNEL_FTRACE
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bool "Compile the kernel with tracing support"
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default n
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config KERNEL_FTRACE_SYSCALLS
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bool "Trace system calls"
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depends on KERNEL_FTRACE
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default n
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config KERNEL_ENABLE_DEFAULT_TRACERS
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bool "Trace process context switches and events"
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depends on KERNEL_FTRACE
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default n
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config KERNEL_DEBUG_KERNEL
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bool
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default n
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config KERNEL_DEBUG_INFO
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bool "Compile the kernel with debug information"
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default y
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select KERNEL_DEBUG_KERNEL
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help
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This will compile your kernel and modules with debug information.
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config KERNEL_DEBUG_LL_UART_NONE
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bool
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default n
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depends on arm
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config KERNEL_DEBUG_LL
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bool
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default n
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depends on arm
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select KERNEL_DEBUG_LL_UART_NONE
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help
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ARM low level debugging
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config KERNEL_EARLY_PRINTK
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bool "Compile the kernel with early printk"
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default n
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depends on arm
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select KERNEL_DEBUG_KERNEL
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select KERNEL_DEBUG_LL if arm
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help
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Compile the kernel with early printk support.
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This is only useful for debugging purposes to send messages
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over the serial console in early boot.
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Enable this to debug early boot problems.
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config KERNEL_AIO
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bool "Compile the kernel with asynchronous IO support"
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default n
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config KERNEL_DIRECT_IO
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bool "Compile the kernel with direct IO support"
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default n
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config KERNEL_MAGIC_SYSRQ
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bool "Compile the kernel with SysRq support"
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default y
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config KERNEL_COREDUMP
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bool
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config KERNEL_ELF_CORE
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bool "Enable process core dump support"
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select KERNEL_COREDUMP
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default y
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config KERNEL_PROVE_LOCKING
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bool "Enable kernel lock checking"
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select KERNEL_DEBUG_KERNEL
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default n
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config KERNEL_PRINTK_TIME
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bool "Enable printk timestamps"
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default y
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config KERNEL_RELAY
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bool
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config KERNEL_KEXEC
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bool "Enable kexec support"
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config USE_RFKILL
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bool "Enable rfkill support"
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default RFKILL_SUPPORT
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#
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# CGROUP support symbols
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#
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config KERNEL_CGROUPS
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bool "Enable kernel cgroups"
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default n
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if KERNEL_CGROUPS
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config KERNEL_CGROUP_DEBUG
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bool "Example debug cgroup subsystem"
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default n
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help
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This option enables a simple cgroup subsystem that
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exports useful debugging information about the cgroups
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framework.
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config KERNEL_FREEZER
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bool
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default y if KERNEL_CGROUP_FREEZER
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config KERNEL_CGROUP_FREEZER
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bool "Freezer cgroup subsystem"
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default n
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help
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Provides a way to freeze and unfreeze all tasks in a
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cgroup.
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config KERNEL_CGROUP_DEVICE
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bool "Device controller for cgroups"
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default y
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help
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Provides a cgroup implementing whitelists for devices which
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a process in the cgroup can mknod or open.
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config KERNEL_CPUSETS
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bool "Cpuset support"
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default n
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help
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This option will let you create and manage CPUSETs which
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allow dynamically partitioning a system into sets of CPUs and
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Memory Nodes and assigning tasks to run only within those sets.
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This is primarily useful on large SMP or NUMA systems.
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config KERNEL_PROC_PID_CPUSET
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bool "Include legacy /proc/<pid>/cpuset file"
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default n
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depends on KERNEL_CPUSETS
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config KERNEL_CGROUP_CPUACCT
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bool "Simple CPU accounting cgroup subsystem"
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default n
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help
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Provides a simple Resource Controller for monitoring the
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total CPU consumed by the tasks in a cgroup.
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config KERNEL_RESOURCE_COUNTERS
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bool "Resource counters"
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default n
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help
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This option enables controller independent resource accounting
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infrastructure that works with cgroups.
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config KERNEL_MM_OWNER
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bool
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default y if KERNEL_MEMCG
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config KERNEL_MEMCG
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bool "Memory Resource Controller for Control Groups"
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default n
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depends on KERNEL_RESOURCE_COUNTERS
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help
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Provides a memory resource controller that manages both anonymous
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memory and page cache. (See Documentation/cgroups/memory.txt)
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Note that setting this option increases fixed memory overhead
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associated with each page of memory in the system. By this,
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20(40)bytes/PAGE_SIZE on 32(64)bit system will be occupied by memory
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usage tracking struct at boot. Total amount of this is printed out
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at boot.
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Only enable when you're ok with these trade offs and really
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sure you need the memory resource controller. Even when you enable
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this, you can set "cgroup_disable=memory" at your boot option to
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disable memory resource controller and you can avoid overheads.
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(and lose benefits of memory resource controller)
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This config option also selects MM_OWNER config option, which
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could in turn add some fork/exit overhead.
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config KERNEL_MEMCG_SWAP
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bool "Memory Resource Controller Swap Extension"
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default n
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depends on KERNEL_MEMCG
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help
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Add swap management feature to memory resource controller. When you
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enable this, you can limit mem+swap usage per cgroup. In other words,
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when you disable this, memory resource controller has no cares to
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usage of swap...a process can exhaust all of the swap. This extension
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is useful when you want to avoid exhaustion swap but this itself
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adds more overheads and consumes memory for remembering information.
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Especially if you use 32bit system or small memory system, please
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be careful about enabling this. When memory resource controller
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is disabled by boot option, this will be automatically disabled and
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there will be no overhead from this. Even when you set this config=y,
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if boot option "swapaccount=0" is set, swap will not be accounted.
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Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page
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size is 4096bytes, 512k per 1Gbytes of swap.
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config KERNEL_MEMCG_SWAP_ENABLED
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bool "Memory Resource Controller Swap Extension enabled by default"
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default n
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depends on KERNEL_MEMCG_SWAP
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help
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Memory Resource Controller Swap Extension comes with its price in
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a bigger memory consumption. General purpose distribution kernels
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which want to enable the feature but keep it disabled by default
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and let the user enable it by swapaccount boot command line
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parameter should have this option unselected.
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For those who want to have the feature enabled by default should
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select this option (if, for some reason, they need to disable it
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then swapaccount=0 does the trick).
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config KERNEL_MEMCG_KMEM
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bool "Memory Resource Controller Kernel Memory accounting (EXPERIMENTAL)"
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default n
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depends on KERNEL_MEMCG
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help
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The Kernel Memory extension for Memory Resource Controller can limit
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the amount of memory used by kernel objects in the system. Those are
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fundamentally different from the entities handled by the standard
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Memory Controller, which are page-based, and can be swapped. Users of
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the kmem extension can use it to guarantee that no group of processes
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will ever exhaust kernel resources alone.
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config KERNEL_PERF_EVENTS
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bool
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default y if KERNEL_CGROUP_PERF
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config KERNEL_CGROUP_PERF
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bool "Enable perf_event per-cpu per-container group (cgroup) monitoring"
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default n
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help
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This option extends the per-cpu mode to restrict monitoring to
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threads which belong to the cgroup specified and run on the
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designated cpu.
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menuconfig KERNEL_CGROUP_SCHED
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bool "Group CPU scheduler"
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default n
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help
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This feature lets CPU scheduler recognize task groups and control CPU
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bandwidth allocation to such task groups. It uses cgroups to group
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tasks.
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if KERNEL_CGROUP_SCHED
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config KERNEL_FAIR_GROUP_SCHED
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bool "Group scheduling for SCHED_OTHER"
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default n
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config KERNEL_CFS_BANDWIDTH
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bool "CPU bandwidth provisioning for FAIR_GROUP_SCHED"
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default n
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depends on KERNEL_FAIR_GROUP_SCHED
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help
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This option allows users to define CPU bandwidth rates (limits) for
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tasks running within the fair group scheduler. Groups with no limit
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set are considered to be unconstrained and will run with no
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restriction.
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See tip/Documentation/scheduler/sched-bwc.txt for more information.
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config KERNEL_RT_GROUP_SCHED
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bool "Group scheduling for SCHED_RR/FIFO"
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default n
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help
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This feature lets you explicitly allocate real CPU bandwidth
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to task groups. If enabled, it will also make it impossible to
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schedule realtime tasks for non-root users until you allocate
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realtime bandwidth for them.
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endif
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config KERNEL_BLK_CGROUP
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bool "Block IO controller"
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default y
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help
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Generic block IO controller cgroup interface. This is the common
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cgroup interface which should be used by various IO controlling
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policies.
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Currently, CFQ IO scheduler uses it to recognize task groups and
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control disk bandwidth allocation (proportional time slice allocation)
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to such task groups. It is also used by bio throttling logic in
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block layer to implement upper limit in IO rates on a device.
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This option only enables generic Block IO controller infrastructure.
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One needs to also enable actual IO controlling logic/policy. For
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enabling proportional weight division of disk bandwidth in CFQ, set
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CONFIG_CFQ_GROUP_IOSCHED=y; for enabling throttling policy, set
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CONFIG_BLK_DEV_THROTTLING=y.
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config KERNEL_DEBUG_BLK_CGROUP
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bool "Enable Block IO controller debugging"
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default n
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depends on KERNEL_BLK_CGROUP
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help
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Enable some debugging help. Currently it exports additional stat
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files in a cgroup which can be useful for debugging.
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config KERNEL_NET_CLS_CGROUP
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bool "Control Group Classifier"
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default y
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config KERNEL_NETPRIO_CGROUP
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bool "Network priority cgroup"
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default y
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endif
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#
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# Namespace support symbols
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#
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config KERNEL_NAMESPACES
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bool "Enable kernel namespaces"
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default n
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if KERNEL_NAMESPACES
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config KERNEL_UTS_NS
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bool "UTS namespace"
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default y
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help
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In this namespace tasks see different info provided
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with the uname() system call
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config KERNEL_IPC_NS
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bool "IPC namespace"
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default y
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help
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In this namespace tasks work with IPC ids which correspond to
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different IPC objects in different namespaces.
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config KERNEL_USER_NS
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bool "User namespace (EXPERIMENTAL)"
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default y
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help
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This allows containers, i.e. vservers, to use user namespaces
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to provide different user info for different servers.
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config KERNEL_PID_NS
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bool "PID Namespaces"
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default y
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help
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Support process id namespaces. This allows having multiple
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processes with the same pid as long as they are in different
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pid namespaces. This is a building block of containers.
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config KERNEL_NET_NS
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bool "Network namespace"
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default y
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help
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Allow user space to create what appear to be multiple instances
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of the network stack.
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endif
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#
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# LXC related symbols
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#
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config KERNEL_LXC_MISC
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bool "Enable miscellaneous LXC related options"
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default n
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if KERNEL_LXC_MISC
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config KERNEL_DEVPTS_MULTIPLE_INSTANCES
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bool "Support multiple instances of devpts"
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default y
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help
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Enable support for multiple instances of devpts filesystem.
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If you want to have isolated PTY namespaces (eg: in containers),
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say Y here. Otherwise, say N. If enabled, each mount of devpts
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filesystem with the '-o newinstance' option will create an
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independent PTY namespace.
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config KERNEL_POSIX_MQUEUE
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bool "POSIX Message Queues"
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default n
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help
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POSIX variant of message queues is a part of IPC. In POSIX message
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queues every message has a priority which decides about succession
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of receiving it by a process. If you want to compile and run
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programs written e.g. for Solaris with use of its POSIX message
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queues (functions mq_*) say Y here.
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POSIX message queues are visible as a filesystem called 'mqueue'
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||||||
|
and can be mounted somewhere if you want to do filesystem
|
||||||
|
operations on message queues.
|
||||||
|
|
||||||
|
endif
|
||||||
418
Config.in
418
Config.in
|
|
@ -274,423 +274,7 @@ menu "Global build settings"
|
||||||
|
|
||||||
comment "Kernel build options"
|
comment "Kernel build options"
|
||||||
|
|
||||||
config KERNEL_DEBUG_FS
|
source "Config-kernel.in"
|
||||||
bool "Compile the kernel with Debug FileSystem enabled"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
debugfs is a virtual file system that kernel developers use to put
|
|
||||||
debugging files into. Enable this option to be able to read and
|
|
||||||
write to these files.
|
|
||||||
|
|
||||||
config KERNEL_PERF_EVENTS
|
|
||||||
bool
|
|
||||||
default n
|
|
||||||
|
|
||||||
config KERNEL_PROFILING
|
|
||||||
bool "Compile the kernel with profiling enabled"
|
|
||||||
default n
|
|
||||||
select KERNEL_PERF_EVENTS
|
|
||||||
help
|
|
||||||
Enable the extended profiling support mechanisms used by profilers such
|
|
||||||
as OProfile.
|
|
||||||
|
|
||||||
config KERNEL_KALLSYMS
|
|
||||||
bool "Compile the kernel with symbol table information"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
This will give you more information in stack traces from kernel oopses
|
|
||||||
|
|
||||||
config KERNEL_FTRACE
|
|
||||||
bool "Compile the kernel with tracing support"
|
|
||||||
default n
|
|
||||||
|
|
||||||
config KERNEL_FTRACE_SYSCALLS
|
|
||||||
bool "Trace system calls"
|
|
||||||
depends on KERNEL_FTRACE
|
|
||||||
default n
|
|
||||||
|
|
||||||
config KERNEL_ENABLE_DEFAULT_TRACERS
|
|
||||||
bool "Trace process context switches and events"
|
|
||||||
depends on KERNEL_FTRACE
|
|
||||||
default n
|
|
||||||
|
|
||||||
config KERNEL_DEBUG_KERNEL
|
|
||||||
bool
|
|
||||||
default n
|
|
||||||
|
|
||||||
config KERNEL_DEBUG_INFO
|
|
||||||
bool "Compile the kernel with debug information"
|
|
||||||
default y
|
|
||||||
select KERNEL_DEBUG_KERNEL
|
|
||||||
help
|
|
||||||
This will compile your kernel and modules with debug information.
|
|
||||||
|
|
||||||
config KERNEL_DEBUG_LL_UART_NONE
|
|
||||||
bool
|
|
||||||
default n
|
|
||||||
depends on arm
|
|
||||||
|
|
||||||
config KERNEL_DEBUG_LL
|
|
||||||
bool
|
|
||||||
default n
|
|
||||||
depends on arm
|
|
||||||
select KERNEL_DEBUG_LL_UART_NONE
|
|
||||||
help
|
|
||||||
ARM low level debugging
|
|
||||||
|
|
||||||
config KERNEL_EARLY_PRINTK
|
|
||||||
bool "Compile the kernel with early printk"
|
|
||||||
default n
|
|
||||||
depends on arm
|
|
||||||
select KERNEL_DEBUG_KERNEL
|
|
||||||
select KERNEL_DEBUG_LL if arm
|
|
||||||
help
|
|
||||||
Compile the kernel with early printk support.
|
|
||||||
This is only useful for debugging purposes to send messages
|
|
||||||
over the serial console in early boot.
|
|
||||||
Enable this to debug early boot problems.
|
|
||||||
|
|
||||||
config KERNEL_AIO
|
|
||||||
bool "Compile the kernel with asynchronous IO support"
|
|
||||||
default n
|
|
||||||
|
|
||||||
config KERNEL_DIRECT_IO
|
|
||||||
bool "Compile the kernel with direct IO support"
|
|
||||||
default n
|
|
||||||
|
|
||||||
config KERNEL_MAGIC_SYSRQ
|
|
||||||
bool "Compile the kernel with SysRq support"
|
|
||||||
default y
|
|
||||||
|
|
||||||
config KERNEL_COREDUMP
|
|
||||||
bool
|
|
||||||
|
|
||||||
config KERNEL_ELF_CORE
|
|
||||||
bool "Enable process core dump support"
|
|
||||||
select KERNEL_COREDUMP
|
|
||||||
default y
|
|
||||||
|
|
||||||
config KERNEL_PROVE_LOCKING
|
|
||||||
bool "Enable kernel lock checking"
|
|
||||||
select KERNEL_DEBUG_KERNEL
|
|
||||||
default n
|
|
||||||
|
|
||||||
config KERNEL_PRINTK_TIME
|
|
||||||
bool "Enable printk timestamps"
|
|
||||||
default y
|
|
||||||
|
|
||||||
config KERNEL_RELAY
|
|
||||||
bool
|
|
||||||
|
|
||||||
config KERNEL_KEXEC
|
|
||||||
bool "Enable kexec support"
|
|
||||||
|
|
||||||
config USE_RFKILL
|
|
||||||
bool "Enable rfkill support"
|
|
||||||
default RFKILL_SUPPORT
|
|
||||||
|
|
||||||
#
|
|
||||||
# CGROUP support symbols
|
|
||||||
#
|
|
||||||
|
|
||||||
config KERNEL_CGROUPS
|
|
||||||
bool "Enable kernel cgroups"
|
|
||||||
default n
|
|
||||||
|
|
||||||
if KERNEL_CGROUPS
|
|
||||||
|
|
||||||
config KERNEL_CGROUP_DEBUG
|
|
||||||
bool "Example debug cgroup subsystem"
|
|
||||||
default n
|
|
||||||
help
|
|
||||||
This option enables a simple cgroup subsystem that
|
|
||||||
exports useful debugging information about the cgroups
|
|
||||||
framework.
|
|
||||||
|
|
||||||
config KERNEL_FREEZER
|
|
||||||
bool
|
|
||||||
default y if KERNEL_CGROUP_FREEZER
|
|
||||||
|
|
||||||
config KERNEL_CGROUP_FREEZER
|
|
||||||
bool "Freezer cgroup subsystem"
|
|
||||||
default n
|
|
||||||
help
|
|
||||||
Provides a way to freeze and unfreeze all tasks in a
|
|
||||||
cgroup.
|
|
||||||
|
|
||||||
config KERNEL_CGROUP_DEVICE
|
|
||||||
bool "Device controller for cgroups"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
Provides a cgroup implementing whitelists for devices which
|
|
||||||
a process in the cgroup can mknod or open.
|
|
||||||
|
|
||||||
config KERNEL_CPUSETS
|
|
||||||
bool "Cpuset support"
|
|
||||||
default n
|
|
||||||
help
|
|
||||||
This option will let you create and manage CPUSETs which
|
|
||||||
allow dynamically partitioning a system into sets of CPUs and
|
|
||||||
Memory Nodes and assigning tasks to run only within those sets.
|
|
||||||
This is primarily useful on large SMP or NUMA systems.
|
|
||||||
|
|
||||||
config KERNEL_PROC_PID_CPUSET
|
|
||||||
bool "Include legacy /proc/<pid>/cpuset file"
|
|
||||||
default n
|
|
||||||
depends on KERNEL_CPUSETS
|
|
||||||
|
|
||||||
config KERNEL_CGROUP_CPUACCT
|
|
||||||
bool "Simple CPU accounting cgroup subsystem"
|
|
||||||
default n
|
|
||||||
help
|
|
||||||
Provides a simple Resource Controller for monitoring the
|
|
||||||
total CPU consumed by the tasks in a cgroup.
|
|
||||||
|
|
||||||
config KERNEL_RESOURCE_COUNTERS
|
|
||||||
bool "Resource counters"
|
|
||||||
default n
|
|
||||||
help
|
|
||||||
This option enables controller independent resource accounting
|
|
||||||
infrastructure that works with cgroups.
|
|
||||||
|
|
||||||
config KERNEL_MM_OWNER
|
|
||||||
bool
|
|
||||||
default y if KERNEL_MEMCG
|
|
||||||
|
|
||||||
config KERNEL_MEMCG
|
|
||||||
bool "Memory Resource Controller for Control Groups"
|
|
||||||
default n
|
|
||||||
depends on KERNEL_RESOURCE_COUNTERS
|
|
||||||
help
|
|
||||||
Provides a memory resource controller that manages both anonymous
|
|
||||||
memory and page cache. (See Documentation/cgroups/memory.txt)
|
|
||||||
|
|
||||||
Note that setting this option increases fixed memory overhead
|
|
||||||
associated with each page of memory in the system. By this,
|
|
||||||
20(40)bytes/PAGE_SIZE on 32(64)bit system will be occupied by memory
|
|
||||||
usage tracking struct at boot. Total amount of this is printed out
|
|
||||||
at boot.
|
|
||||||
|
|
||||||
Only enable when you're ok with these trade offs and really
|
|
||||||
sure you need the memory resource controller. Even when you enable
|
|
||||||
this, you can set "cgroup_disable=memory" at your boot option to
|
|
||||||
disable memory resource controller and you can avoid overheads.
|
|
||||||
(and lose benefits of memory resource controller)
|
|
||||||
|
|
||||||
This config option also selects MM_OWNER config option, which
|
|
||||||
could in turn add some fork/exit overhead.
|
|
||||||
|
|
||||||
config KERNEL_MEMCG_SWAP
|
|
||||||
bool "Memory Resource Controller Swap Extension"
|
|
||||||
default n
|
|
||||||
depends on KERNEL_MEMCG
|
|
||||||
help
|
|
||||||
Add swap management feature to memory resource controller. When you
|
|
||||||
enable this, you can limit mem+swap usage per cgroup. In other words,
|
|
||||||
when you disable this, memory resource controller has no cares to
|
|
||||||
usage of swap...a process can exhaust all of the swap. This extension
|
|
||||||
is useful when you want to avoid exhaustion swap but this itself
|
|
||||||
adds more overheads and consumes memory for remembering information.
|
|
||||||
Especially if you use 32bit system or small memory system, please
|
|
||||||
be careful about enabling this. When memory resource controller
|
|
||||||
is disabled by boot option, this will be automatically disabled and
|
|
||||||
there will be no overhead from this. Even when you set this config=y,
|
|
||||||
if boot option "swapaccount=0" is set, swap will not be accounted.
|
|
||||||
Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page
|
|
||||||
size is 4096bytes, 512k per 1Gbytes of swap.
|
|
||||||
|
|
||||||
config KERNEL_MEMCG_SWAP_ENABLED
|
|
||||||
bool "Memory Resource Controller Swap Extension enabled by default"
|
|
||||||
default n
|
|
||||||
depends on KERNEL_MEMCG_SWAP
|
|
||||||
help
|
|
||||||
Memory Resource Controller Swap Extension comes with its price in
|
|
||||||
a bigger memory consumption. General purpose distribution kernels
|
|
||||||
which want to enable the feature but keep it disabled by default
|
|
||||||
and let the user enable it by swapaccount boot command line
|
|
||||||
parameter should have this option unselected.
|
|
||||||
For those who want to have the feature enabled by default should
|
|
||||||
select this option (if, for some reason, they need to disable it
|
|
||||||
then swapaccount=0 does the trick).
|
|
||||||
|
|
||||||
|
|
||||||
config KERNEL_MEMCG_KMEM
|
|
||||||
bool "Memory Resource Controller Kernel Memory accounting (EXPERIMENTAL)"
|
|
||||||
default n
|
|
||||||
depends on KERNEL_MEMCG
|
|
||||||
help
|
|
||||||
The Kernel Memory extension for Memory Resource Controller can limit
|
|
||||||
the amount of memory used by kernel objects in the system. Those are
|
|
||||||
fundamentally different from the entities handled by the standard
|
|
||||||
Memory Controller, which are page-based, and can be swapped. Users of
|
|
||||||
the kmem extension can use it to guarantee that no group of processes
|
|
||||||
will ever exhaust kernel resources alone.
|
|
||||||
|
|
||||||
config KERNEL_CGROUP_PERF
|
|
||||||
bool "Enable perf_event per-cpu per-container group (cgroup) monitoring"
|
|
||||||
default n
|
|
||||||
select KERNEL_PERF_EVENTS
|
|
||||||
help
|
|
||||||
This option extends the per-cpu mode to restrict monitoring to
|
|
||||||
threads which belong to the cgroup specified and run on the
|
|
||||||
designated cpu.
|
|
||||||
|
|
||||||
menuconfig KERNEL_CGROUP_SCHED
|
|
||||||
bool "Group CPU scheduler"
|
|
||||||
default n
|
|
||||||
help
|
|
||||||
This feature lets CPU scheduler recognize task groups and control CPU
|
|
||||||
bandwidth allocation to such task groups. It uses cgroups to group
|
|
||||||
tasks.
|
|
||||||
|
|
||||||
if KERNEL_CGROUP_SCHED
|
|
||||||
|
|
||||||
config KERNEL_FAIR_GROUP_SCHED
|
|
||||||
bool "Group scheduling for SCHED_OTHER"
|
|
||||||
default n
|
|
||||||
|
|
||||||
config KERNEL_CFS_BANDWIDTH
|
|
||||||
bool "CPU bandwidth provisioning for FAIR_GROUP_SCHED"
|
|
||||||
default n
|
|
||||||
depends on KERNEL_FAIR_GROUP_SCHED
|
|
||||||
help
|
|
||||||
This option allows users to define CPU bandwidth rates (limits) for
|
|
||||||
tasks running within the fair group scheduler. Groups with no limit
|
|
||||||
set are considered to be unconstrained and will run with no
|
|
||||||
restriction.
|
|
||||||
See tip/Documentation/scheduler/sched-bwc.txt for more information.
|
|
||||||
|
|
||||||
config KERNEL_RT_GROUP_SCHED
|
|
||||||
bool "Group scheduling for SCHED_RR/FIFO"
|
|
||||||
default n
|
|
||||||
help
|
|
||||||
This feature lets you explicitly allocate real CPU bandwidth
|
|
||||||
to task groups. If enabled, it will also make it impossible to
|
|
||||||
schedule realtime tasks for non-root users until you allocate
|
|
||||||
realtime bandwidth for them.
|
|
||||||
|
|
||||||
endif
|
|
||||||
|
|
||||||
config KERNEL_BLK_CGROUP
|
|
||||||
bool "Block IO controller"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
Generic block IO controller cgroup interface. This is the common
|
|
||||||
cgroup interface which should be used by various IO controlling
|
|
||||||
policies.
|
|
||||||
|
|
||||||
Currently, CFQ IO scheduler uses it to recognize task groups and
|
|
||||||
control disk bandwidth allocation (proportional time slice allocation)
|
|
||||||
to such task groups. It is also used by bio throttling logic in
|
|
||||||
block layer to implement upper limit in IO rates on a device.
|
|
||||||
|
|
||||||
This option only enables generic Block IO controller infrastructure.
|
|
||||||
One needs to also enable actual IO controlling logic/policy. For
|
|
||||||
enabling proportional weight division of disk bandwidth in CFQ, set
|
|
||||||
CONFIG_CFQ_GROUP_IOSCHED=y; for enabling throttling policy, set
|
|
||||||
CONFIG_BLK_DEV_THROTTLING=y.
|
|
||||||
|
|
||||||
config KERNEL_DEBUG_BLK_CGROUP
|
|
||||||
bool "Enable Block IO controller debugging"
|
|
||||||
default n
|
|
||||||
depends on KERNEL_BLK_CGROUP
|
|
||||||
help
|
|
||||||
Enable some debugging help. Currently it exports additional stat
|
|
||||||
files in a cgroup which can be useful for debugging.
|
|
||||||
|
|
||||||
config KERNEL_NET_CLS_CGROUP
|
|
||||||
bool "Control Group Classifier"
|
|
||||||
default y
|
|
||||||
|
|
||||||
config KERNEL_NETPRIO_CGROUP
|
|
||||||
bool "Network priority cgroup"
|
|
||||||
default y
|
|
||||||
|
|
||||||
endif
|
|
||||||
|
|
||||||
#
|
|
||||||
# Namespace support symbols
|
|
||||||
#
|
|
||||||
|
|
||||||
config KERNEL_NAMESPACES
|
|
||||||
bool "Enable kernel namespaces"
|
|
||||||
default n
|
|
||||||
|
|
||||||
if KERNEL_NAMESPACES
|
|
||||||
|
|
||||||
config KERNEL_UTS_NS
|
|
||||||
bool "UTS namespace"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
In this namespace tasks see different info provided
|
|
||||||
with the uname() system call
|
|
||||||
|
|
||||||
config KERNEL_IPC_NS
|
|
||||||
bool "IPC namespace"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
In this namespace tasks work with IPC ids which correspond to
|
|
||||||
different IPC objects in different namespaces.
|
|
||||||
|
|
||||||
config KERNEL_USER_NS
|
|
||||||
bool "User namespace (EXPERIMENTAL)"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
This allows containers, i.e. vservers, to use user namespaces
|
|
||||||
to provide different user info for different servers.
|
|
||||||
|
|
||||||
config KERNEL_PID_NS
|
|
||||||
bool "PID Namespaces"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
Support process id namespaces. This allows having multiple
|
|
||||||
processes with the same pid as long as they are in different
|
|
||||||
pid namespaces. This is a building block of containers.
|
|
||||||
|
|
||||||
config KERNEL_NET_NS
|
|
||||||
bool "Network namespace"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
Allow user space to create what appear to be multiple instances
|
|
||||||
of the network stack.
|
|
||||||
|
|
||||||
endif
|
|
||||||
|
|
||||||
#
|
|
||||||
# LXC related symbols
|
|
||||||
#
|
|
||||||
|
|
||||||
config KERNEL_LXC_MISC
|
|
||||||
bool "Enable miscellaneous LXC related options"
|
|
||||||
default n
|
|
||||||
|
|
||||||
if KERNEL_LXC_MISC
|
|
||||||
|
|
||||||
config KERNEL_DEVPTS_MULTIPLE_INSTANCES
|
|
||||||
bool "Support multiple instances of devpts"
|
|
||||||
default y
|
|
||||||
help
|
|
||||||
Enable support for multiple instances of devpts filesystem.
|
|
||||||
If you want to have isolated PTY namespaces (eg: in containers),
|
|
||||||
say Y here. Otherwise, say N. If enabled, each mount of devpts
|
|
||||||
filesystem with the '-o newinstance' option will create an
|
|
||||||
independent PTY namespace.
|
|
||||||
|
|
||||||
config KERNEL_POSIX_MQUEUE
|
|
||||||
bool "POSIX Message Queues"
|
|
||||||
default n
|
|
||||||
help
|
|
||||||
POSIX variant of message queues is a part of IPC. In POSIX message
|
|
||||||
queues every message has a priority which decides about succession
|
|
||||||
of receiving it by a process. If you want to compile and run
|
|
||||||
programs written e.g. for Solaris with use of its POSIX message
|
|
||||||
queues (functions mq_*) say Y here.
|
|
||||||
|
|
||||||
POSIX message queues are visible as a filesystem called 'mqueue'
|
|
||||||
and can be mounted somewhere if you want to do filesystem
|
|
||||||
operations on message queues.
|
|
||||||
|
|
||||||
endif
|
|
||||||
|
|
||||||
comment "Package build options"
|
comment "Package build options"
|
||||||
|
|
||||||
|
|
|
||||||
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Reference in a new issue