memcg: mem+swap controller Kconfig

[people/arne_f/kernel.git] / init / Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index 7cbe1f43ca22d959fe1c2b9dfe9bf235c70b5eb3..a724a149bf3f232aba760c6b584db3f52dfd7e32 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -428,6 +428,23 @@ config CGROUP_MEM_RES_CTLR
 config MM_OWNER
        bool
 
+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.
+
+
 endmenu
 
 config SYSFS_DEPRECATED