linux-kernel - Re: [ProbableSpam]Re: [PATCH 2/5] Container Freezer: Make refrigerator always available

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Date:	Tue, 12 Aug 2008 18:01:40 -0700
From:	Matt Helsley <matthltc@...ibm.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Paul Menage <menage@...gle.com>,
	Li Zefan <lizf@...fujitsu.com>,
	Linux-Kernel <linux-kernel@...r.kernel.org>,
	Linux Containers <containers@...ts.linux-foundation.org>,
	linux-pm@...ts.linux-foundation.org,
	Cedric Le Goater <clg@...ibm.com>,
	"Serge E. Hallyn" <serue@...ibm.com>
Subject: Re: [ProbableSpam]Re: [PATCH 2/5] Container Freezer: Make
	refrigerator always available


On Tue, 2008-08-12 at 22:49 +0200, Rafael J. Wysocki wrote:
> On Tuesday, 12 of August 2008, Matt Helsley wrote:
> > Now that the TIF_FREEZE flag is available in all architectures,
> > extract the refrigerator() and freeze_task() from kernel/power/process.c
> > and make it available to all.
> > 
> > The refrigerator() can now be used in a control group subsystem
> > implementing a control group freezer.
> > 
> > Signed-off-by: Cedric Le Goater <clg@...ibm.com>
> > Signed-off-by: Matt Helsley <matthltc@...ibm.com>
> > Acked-by: Serge E. Hallyn <serue@...ibm.com>
> > Tested-by: Matt Helsley <matthltc@...ibm.com>
> 
> Your Signed-off-by implies your Tested-by (at least it should ;-)).

I wasn't sure that was always true so I added it just in case. I'll take
it out of any future postings.

> > ---
> [--snip--]
> > Index: linux-2.6.27-rc1-mm1/kernel/power/Kconfig
> > ===================================================================
> > --- linux-2.6.27-rc1-mm1.orig/kernel/power/Kconfig
> > +++ linux-2.6.27-rc1-mm1/kernel/power/Kconfig
> > @@ -85,6 +85,9 @@ config PM_SLEEP
> >  	depends on SUSPEND || HIBERNATION || XEN_SAVE_RESTORE
> >  	default y
> >  
> > +config FREEZER
> > +	def_bool PM_SLEEP
> > +
> 
> I'd still prefer this to go into a Kconfig in the parent directory (ie. where
> freezer.c and the Makefile building it are located).  Otherwise it's guaranteed
> to confuse someone.

	I'm thinking of making a patch moving the cgroups config variables into
a kernel/Kconfig.cgroups file. Would moving config FREEZER to such a
file be satisfactory? Paul, what do you think?

Cheers,
	-Matt Helsley

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