Re: [RFC][PATCH 9/11] memcg : mem+swap controlelr kconfig

[KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>]

On Thu, 23 Oct 2008 21:32:28 -0700
Randy Dunlap <randy.dunlap@oracle.com> wrote:

> On Thu, 23 Oct 2008 18:12:20 +0900 KAMEZAWA Hiroyuki wrote:
> 
> >  Documentation/kernel-parameters.txt |    3 +++
> >  include/linux/memcontrol.h          |    3 +++
> >  init/Kconfig                        |   16 ++++++++++++++++
> >  mm/memcontrol.c                     |   17 +++++++++++++++++
> >  4 files changed, 39 insertions(+)
> > 
> > Index: mmotm-2.6.27+/init/Kconfig
> > ===================================================================
> > --- mmotm-2.6.27+.orig/init/Kconfig
> > +++ mmotm-2.6.27+/init/Kconfig
> > @@ -613,6 +613,22 @@ config KALLSYMS_EXTRA_PASS
> >  	   reported.  KALLSYMS_EXTRA_PASS is only a temporary workaround while
> >  	   you wait for kallsyms to be fixed.
> >  
> > +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 have no cares to
> 
> 	  probably:                                         has
> 
> > +	  usage of swap...a process can exhaust the all swap. This extension
> 
> 	                                        all of the swap.
> 
> > +	  is useful when you want to avoid exhausion of swap but this itself
> 
> 	                                   exhaustion
> 
> > +	  adds more overheads and consumes memory for remembering information.
> > +	  Especially if you use 32bit system or small memory system,
> > +	  please be careful to enable this. When memory resource controller
> 
> 	  probably:         about enabling this.
> 
Thank you for review. will be fixed.

-Kame


> > +	  is disabled by boot option, this will be automatiaclly 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.
> > +
> >  
> >  config HOTPLUG
> >  	bool "Support for hot-pluggable devices" if EMBEDDED
> 
> 
> ---
> ~Randy
> 

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