linux-kernel - Re: [PATCH]: In kernel hibernation, suspend to both

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Date:	Tue, 15 May 2012 10:26:43 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Bojan Smojver <bojan@...ursive.com>
cc:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	<bp@...en8.de>
Subject: Re: [PATCH]: In kernel hibernation, suspend to both

On Tue, 15 May 2012, Bojan Smojver wrote:

> Alan/Srivatsa,
> 
> Coming back to the explanation of how this whole thing works, it would
> seem that at the point of image writing all devices are fully functional
> (not just some, as I mistakenly believed). However, the processes are
> supposed to be already frozen, right? Calling suspend_prepare(), which
> will essentially try to freeze the processes and kernel threads, seems
> like the wrong thing to do.
> 
> Did you guys mean that we should be calling
> pm_notifier_call_chain(PM_SUSPEND_PREPARE) only here?

It looks like you've got this all figured out now.

Alan Stern

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