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

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Message-Id: <200808122249.27553.rjw@sisk.pl>
Date:	Tue, 12 Aug 2008 22:49:26 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Matt Helsley <matthltc@...ibm.com>
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: [PATCH 2/5] Container Freezer: Make refrigerator always available

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 ;-)).

> ---
[--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.

>  config SUSPEND
>  	bool "Suspend to RAM and standby"
>  	depends on PM && ARCH_SUSPEND_POSSIBLE
> 


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