linux-kernel - Re: [PATCH] swsusp: Disable nonboot CPUs before entering platform suspend

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Date:	Fri, 9 Mar 2007 23:10:22 +0100
From:	Pavel Machek <pavel@....cz>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] swsusp: Disable nonboot CPUs before entering platform suspend

Hi!

> > ...so, if pm_ops is non-null, power_down does nonboot cpu disabling,
> > otherwise we proceed with cpus enabled?
> > 
> > That looks ugly.
> > 
> > Is the warning bogus? Or maybe we should *always* disable nonboot cpus
> > in powerdown path?
> 
> Is disable_nonboot_cpus() assuming that first_cpu(cpu_present_map) is
> the boot cpu? Just wondering why disable_nonboot_cpus() isn't using just

I'd  say so. It is nicer (and required on some APM systems?) to do
shutdown from the boot cpu.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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