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-config CGROUPS
- bool "Control Group support"
- help
- This option will let you use process cgroup subsystems
- such as Cpusets
-
- Say N if unsure.
-
-config CGROUP_DEBUG
- bool "Example debug cgroup subsystem"
- depends on CGROUPS
- default n
- help
- This option enables a simple cgroup subsystem that
- exports useful debugging information about the cgroups
- framework
-
- Say N if unsure
-
-config CGROUP_NS
- bool "Namespace cgroup subsystem"
- depends on CGROUPS
- help
- Provides a simple namespace cgroup subsystem to
- provide hierarchical naming of sets of namespaces,
- for instance virtual servers and checkpoint/restart
- jobs.
-
-config CGROUP_FREEZER
- bool "control group freezer subsystem"
- depends on CGROUPS
- help
- Provides a way to freeze and unfreeze all tasks in a
- cgroup.
-
-config CGROUP_DEVICE
- bool "Device controller for cgroups"
- depends on CGROUPS && EXPERIMENTAL
- help
- Provides a cgroup implementing whitelists for devices which
- a process in the cgroup can mknod or open.
-
-config CPUSETS
- bool "Cpuset support"
- depends on SMP && CGROUPS
- 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.
-
- Say N if unsure.
-
#
# Architectures with an unreliable sched_clock() should select this:
#
help
This feature lets CPU scheduler recognize task groups and control CPU
bandwidth allocation to such task groups.
+ In order to create a group from arbitrary set of processes, use
+ CONFIG_CGROUPS. (See Control Group support.)
config FAIR_GROUP_SCHED
bool "Group scheduling for SCHED_OTHER"
endchoice
+menuconfig CGROUPS
+ boolean "Control Group support"
+ help
+ This option adds support for grouping sets of processes together, for
+ use with process control subsystems such as Cpusets, CFS, memory
+ controls or device isolation.
+ See
+ - Documentation/cpusets.txt (Cpusets)
+ - Documentation/scheduler/sched-design-CFS.txt (CFS)
+ - Documentation/cgroups/ (features for grouping, isolation)
+ - Documentation/controllers/ (features for resource control)
+
+ Say N if unsure.
+
+if CGROUPS
+
+config CGROUP_DEBUG
+ bool "Example debug cgroup subsystem"
+ depends on CGROUPS
+ default n
+ help
+ This option enables a simple cgroup subsystem that
+ exports useful debugging information about the cgroups
+ framework.
+
+ Say N if unsure.
+
+config CGROUP_NS
+ bool "Namespace cgroup subsystem"
+ depends on CGROUPS
+ help
+ Provides a simple namespace cgroup subsystem to
+ provide hierarchical naming of sets of namespaces,
+ for instance virtual servers and checkpoint/restart
+ jobs.
+
+config CGROUP_FREEZER
+ bool "Freezer cgroup subsystem"
+ depends on CGROUPS
+ help
+ Provides a way to freeze and unfreeze all tasks in a
+ cgroup.
+
+config CGROUP_DEVICE
+ bool "Device controller for cgroups"
+ depends on CGROUPS && EXPERIMENTAL
+ help
+ Provides a cgroup implementing whitelists for devices which
+ a process in the cgroup can mknod or open.
+
+config CPUSETS
+ bool "Cpuset support"
+ depends on SMP && CGROUPS
+ 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.
+
+ Say N if unsure.
+
+config PROC_PID_CPUSET
+ bool "Include legacy /proc/<pid>/cpuset file"
+ depends on CPUSETS
+ default y
+
config CGROUP_CPUACCT
bool "Simple CPU accounting cgroup subsystem"
depends on CGROUPS
help
Provides a simple Resource Controller for monitoring the
- total CPU consumed by the tasks in a cgroup
+ total CPU consumed by the tasks in a cgroup.
config RESOURCE_COUNTERS
bool "Resource counters"
help
This option enables controller independent resource accounting
- infrastructure that works with cgroups
+ infrastructure that works with cgroups.
depends on CGROUPS
-config MM_OWNER
- bool
-
config CGROUP_MEM_RES_CTLR
bool "Memory Resource Controller for Control Groups"
depends on CGROUPS && RESOURCE_COUNTERS
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 contoller)
+ (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 CGROUP_MEM_RES_CTLR_SWAP
+ bool "Memory Resource Controller Swap Extension(EXPERIMENTAL)"
+ depends on CGROUP_MEM_RES_CTLR && SWAP && EXPERIMENTAL
+ 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 "noswapaccount" is set, swap will not be accounted.
+
+endif # CGROUPS
+
+config MM_OWNER
+ bool
+
config SYSFS_DEPRECATED
bool
config SYSFS_DEPRECATED_V2
- bool "Create deprecated sysfs files"
+ bool "Create deprecated sysfs layout for older userspace tools"
depends on SYSFS
default y
select SYSFS_DEPRECATED
help
- This option creates deprecated symlinks such as the
- "device"-link, the <subsystem>:<name>-link, and the
- "bus"-link. It may also add deprecated key in the
- uevent environment.
- None of these features or values should be used today, as
- they export driver core implementation details to userspace
- or export properties which can't be kept stable across kernel
- releases.
-
- If enabled, this option will also move any device structures
- that belong to a class, back into the /sys/class hierarchy, in
- order to support older versions of udev and some userspace
- programs.
-
- If you are using a distro with the most recent userspace
- packages, it should be safe to say N here.
-
-config PROC_PID_CPUSET
- bool "Include legacy /proc/<pid>/cpuset file"
- depends on CPUSETS
- default y
+ This option switches the layout of sysfs to the deprecated
+ version.
+
+ The current sysfs layout features a unified device tree at
+ /sys/devices/, which is able to express a hierarchy between
+ class devices. If the deprecated option is set to Y, the
+ unified device tree is split into a bus device tree at
+ /sys/devices/ and several individual class device trees at
+ /sys/class/. The class and bus devices will be connected by
+ "<subsystem>:<name>" and the "device" links. The "block"
+ class devices, will not show up in /sys/class/block/. Some
+ subsystems will suppress the creation of some devices which
+ depend on the unified device tree.
+
+ This option is not a pure compatibility option that can
+ be safely enabled on newer distributions. It will change the
+ layout of sysfs to the non-extensible deprecated version,
+ and disable some features, which can not be exported without
+ confusing older userspace tools. Since 2007/2008 all major
+ distributions do not enable this option, and ship no tools which
+ depend on the deprecated layout or this option.
+
+ If you are using a new kernel on an older distribution, or use
+ older userspace tools, you might need to say Y here. Do not say Y,
+ if the original kernel, that came with your distribution, has
+ this option set to N.
config RELAY
bool "Kernel->user space relay support (formerly relayfs)"
boolean
select PLIST
-config TINY_SHMEM
- default !SHMEM
- bool
-
config BASE_SMALL
int
default 0 if BASE_FULL
the version). With this option, such a "srcversion" field
will be created for all modules. If unsure, say N.
-config KMOD
- def_bool y
- help
- This is being removed soon. These days, CONFIG_MODULES
- implies CONFIG_KMOD, so use that instead.
-
endif # MODULES
config INIT_ALL_POSSIBLE
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