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Date: Thu, 17 Dec 2015 17:19:56 -0500
From: Johannes Weiner <hannes@...xchg.org>
To: Tejun Heo <tj@...nel.org>
Cc: cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
kernel-team@...com
Subject: [PATCH 1/2] 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@...xchg.org>
---
init/Kconfig | 65 ++++++++++++++++++++++++------------------------------------
1 file changed, 26 insertions(+), 39 deletions(-)
diff --git a/init/Kconfig b/init/Kconfig
index 16840b4..ed324f5 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -958,23 +958,22 @@ menuconfig CGROUPS
if CGROUPS
config CGROUP_DEBUG
- bool "Example debug cgroup subsystem"
+ bool "Example controller"
default n
help
- This option enables a simple cgroup subsystem that
- exports useful debugging information about the cgroups
- framework.
+ This option enables a simple controller that exports
+ debugging information about the cgroups framework.
- Say N if unsure.
+ Say N.
config CGROUP_FREEZER
- bool "Freezer cgroup subsystem"
+ bool "Freezer controller"
help
Provides a way to freeze and unfreeze all tasks in a
cgroup.
config CGROUP_PIDS
- bool "PIDs cgroup subsystem"
+ bool "PIDs controller"
help
Provides enforcement of process number limits in the scope of a
cgroup. Any attempt to fork more processes than is allowed in the
@@ -990,13 +989,13 @@ config CGROUP_PIDS
attach to a cgroup.
config CGROUP_DEVICE
- bool "Device controller for cgroups"
+ bool "Device controller"
help
- Provides a cgroup implementing whitelists for devices which
- a process in the cgroup can mknod or open.
+ Provides a cgroup controller implementing whitelists for
+ devices which a process in the cgroup can mknod or open.
config CPUSETS
- bool "Cpuset support"
+ bool "Cpuset controller"
help
This option will let you create and manage CPUSETs which
allow dynamically partitioning a system into sets of CPUs and
@@ -1011,41 +1010,29 @@ config PROC_PID_CPUSET
default y
config CGROUP_CPUACCT
- bool "Simple CPU accounting cgroup subsystem"
+ bool "Simple CPU accounting controller"
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.
config PAGE_COUNTER
bool
config MEMCG
- bool "Memory Resource Controller for Control Groups"
+ bool "Memory controller"
select PAGE_COUNTER
select EVENTFD
help
- Provides a memory resource controller that manages both anonymous
- memory and page cache. (See Documentation/cgroups/memory.txt)
+ Provides control over the memory footprint of tasks in a cgroup.
config MEMCG_SWAP
- bool "Memory Resource Controller Swap Extension"
+ bool "Swap controller"
depends on MEMCG && SWAP
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.
+ Provides control over the swap space consumed by tasks in a cgroup.
+
config MEMCG_SWAP_ENABLED
- bool "Memory Resource Controller Swap Extension enabled by default"
+ bool "Swap controller enabled by default"
depends on MEMCG_SWAP
default y
help
@@ -1059,12 +1046,12 @@ config MEMCG_SWAP_ENABLED
then swapaccount=0 does the trick).
config CGROUP_HUGETLB
- bool "HugeTLB Resource Controller for Control Groups"
+ bool "HugeTLB controller"
depends on HUGETLB_PAGE
select PAGE_COUNTER
default n
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.
The limit is enforced during page fault. Since HugeTLB doesn't
support page reclaim, enforcing the limit at page fault time implies
@@ -1075,17 +1062,17 @@ config CGROUP_HUGETLB
that we cannot use the controller with huge page less than 3 pages.
config CGROUP_PERF
- bool "Enable perf_event per-cpu per-container group (cgroup) monitoring"
+ bool "Perf controller"
depends on PERF_EVENTS && CGROUPS
help
- This option extends the per-cpu mode to restrict monitoring to
- threads which belong to the cgroup specified and run on the
+ This option extends the perf per-cpu mode to restrict monitoring
+ to threads which belong to the cgroup specified and run on the
designated cpu.
Say N if unsure.
menuconfig CGROUP_SCHED
- bool "Group CPU scheduler"
+ bool "CPU controller"
default n
help
This feature lets CPU scheduler recognize task groups and control CPU
@@ -1123,7 +1110,7 @@ config RT_GROUP_SCHED
endif #CGROUP_SCHED
config BLK_CGROUP
- bool "Block IO controller"
+ bool "IO controller"
depends on BLOCK
default n
---help---
@@ -1145,7 +1132,7 @@ config BLK_CGROUP
See Documentation/cgroups/blkio-controller.txt for more information.
config DEBUG_BLK_CGROUP
- bool "Enable Block IO controller debugging"
+ bool "IO controller debugging"
depends on BLK_CGROUP
default n
---help---
--
2.6.4
--
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