linux-kernel - Re: [PATCH] Remove process freezer from suspend to RAM pathway

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Date:	Sun, 8 Jul 2007 16:17:14 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc:	Kyle Moffett <mrmacman_g4@....com>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	Pavel Machek <pavel@....cz>, "Rafael J. Wysocki" <rjw@...k.pl>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-pm@...ts.linux-foundation.org>
Subject: Re: [PATCH] Remove process freezer from suspend to RAM pathway

On Sun, 8 Jul 2007, Benjamin Herrenschmidt wrote:

> Note that we could have also a per-device "icebox" (just a waitqueue).
> Might be nice for a device to resume whatever it froze just after it
> resumed itself, might even be necessary in case whatever thread got
> frozen is necessary for handling child devices.

This wouldn't need any special infrastructure.  Just a regular 
waitqueue defined in the device's private data structure.

Alan Stern

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