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cgroup: clean up the kernel configuration menu nomenclature 

The config options for the different cgroup controllers use various
terms: resource controller, cgroup subsystem, etc. Simplify this to
"controller", which is clear enough in the cgroup context.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Johannes Weiner 2015-12-17 17:19:56 -05:00 committed by Tejun Heo
parent fccd3af571
commit a0166ec4b0
1 changed files with 26 additions and 39 deletions
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65
init/Kconfig
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@ -941,23 +941,22 @@ menuconfig CGROUPS
if CGROUPS if CGROUPS
config CGROUP_DEBUG config CGROUP_DEBUG
bool "Example debug cgroup subsystem" bool "Example controller"
default n default n
help help
This option enables a simple cgroup subsystem that This option enables a simple controller that exports
exports useful debugging information about the cgroups debugging information about the cgroups framework.
framework.
Say N if unsure. Say N.
config CGROUP_FREEZER config CGROUP_FREEZER
bool "Freezer cgroup subsystem" bool "Freezer controller"
help help
Provides a way to freeze and unfreeze all tasks in a Provides a way to freeze and unfreeze all tasks in a
cgroup. cgroup.
config CGROUP_PIDS config CGROUP_PIDS
bool "PIDs cgroup subsystem" bool "PIDs controller"
help help
Provides enforcement of process number limits in the scope of a Provides enforcement of process number limits in the scope of a
cgroup. Any attempt to fork more processes than is allowed in the cgroup. Any attempt to fork more processes than is allowed in the
@ -973,13 +972,13 @@ config CGROUP_PIDS
attach to a cgroup. attach to a cgroup.
config CGROUP_DEVICE config CGROUP_DEVICE
bool "Device controller for cgroups" bool "Device controller"
help help
Provides a cgroup implementing whitelists for devices which Provides a cgroup controller implementing whitelists for
a process in the cgroup can mknod or open. devices which a process in the cgroup can mknod or open.
config CPUSETS config CPUSETS
bool "Cpuset support" bool "Cpuset controller"
help help
This option will let you create and manage CPUSETs which This option will let you create and manage CPUSETs which
allow dynamically partitioning a system into sets of CPUs and allow dynamically partitioning a system into sets of CPUs and
@ -994,41 +993,29 @@ config PROC_PID_CPUSET
default y default y
config CGROUP_CPUACCT config CGROUP_CPUACCT
bool "Simple CPU accounting cgroup subsystem" bool "Simple CPU accounting controller"
help help
Provides a simple Resource Controller for monitoring the Provides a simple controller for monitoring the
total CPU consumed by the tasks in a cgroup. total CPU consumed by the tasks in a cgroup.
config PAGE_COUNTER config PAGE_COUNTER
bool bool
config MEMCG config MEMCG
bool "Memory Resource Controller for Control Groups" bool "Memory controller"
select PAGE_COUNTER select PAGE_COUNTER
select EVENTFD select EVENTFD
help help
Provides a memory resource controller that manages both anonymous Provides control over the memory footprint of tasks in a cgroup.
memory and page cache. (See Documentation/cgroups/memory.txt)
config MEMCG_SWAP config MEMCG_SWAP
bool "Memory Resource Controller Swap Extension" bool "Swap controller"
depends on MEMCG && SWAP depends on MEMCG && SWAP
help help
Add swap management feature to memory resource controller. When you Provides control over the swap space consumed by tasks in a cgroup.
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 MEMCG_SWAP_ENABLED config MEMCG_SWAP_ENABLED
bool "Memory Resource Controller Swap Extension enabled by default" bool "Swap controller enabled by default"
depends on MEMCG_SWAP depends on MEMCG_SWAP
default y default y
help help
@ -1053,12 +1040,12 @@ config MEMCG_KMEM
will ever exhaust kernel resources alone. will ever exhaust kernel resources alone.
config CGROUP_HUGETLB config CGROUP_HUGETLB
bool "HugeTLB Resource Controller for Control Groups" bool "HugeTLB controller"
depends on HUGETLB_PAGE depends on HUGETLB_PAGE
select PAGE_COUNTER select PAGE_COUNTER
default n default n
help help
Provides a cgroup Resource Controller for HugeTLB pages. Provides a cgroup controller for HugeTLB pages.
When you enable this, you can put a per cgroup limit on HugeTLB usage. When you enable this, you can put a per cgroup limit on HugeTLB usage.
The limit is enforced during page fault. Since HugeTLB doesn't The limit is enforced during page fault. Since HugeTLB doesn't
support page reclaim, enforcing the limit at page fault time implies support page reclaim, enforcing the limit at page fault time implies
@ -1069,17 +1056,17 @@ config CGROUP_HUGETLB
that we cannot use the controller with huge page less than 3 pages. that we cannot use the controller with huge page less than 3 pages.
config CGROUP_PERF config CGROUP_PERF
bool "Enable perf_event per-cpu per-container group (cgroup) monitoring" bool "Perf controller"
depends on PERF_EVENTS && CGROUPS depends on PERF_EVENTS && CGROUPS
help help
This option extends the per-cpu mode to restrict monitoring to This option extends the perf per-cpu mode to restrict monitoring
threads which belong to the cgroup specified and run on the to threads which belong to the cgroup specified and run on the
designated cpu. designated cpu.
Say N if unsure. Say N if unsure.
menuconfig CGROUP_SCHED menuconfig CGROUP_SCHED
bool "Group CPU scheduler" bool "CPU controller"
default n default n
help help
This feature lets CPU scheduler recognize task groups and control CPU This feature lets CPU scheduler recognize task groups and control CPU
@ -1117,7 +1104,7 @@ config RT_GROUP_SCHED
endif #CGROUP_SCHED endif #CGROUP_SCHED
config BLK_CGROUP config BLK_CGROUP
bool "Block IO controller" bool "IO controller"
depends on BLOCK depends on BLOCK
default n default n
---help--- ---help---
@ -1139,7 +1126,7 @@ config BLK_CGROUP
See Documentation/cgroups/blkio-controller.txt for more information. See Documentation/cgroups/blkio-controller.txt for more information.
config DEBUG_BLK_CGROUP config DEBUG_BLK_CGROUP
bool "Enable Block IO controller debugging" bool "IO controller debugging"
depends on BLK_CGROUP depends on BLK_CGROUP
default n default n
---help--- ---help---