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Message-Id: <1243373360.13930.57.camel@nigel-laptop>
Date: Wed, 27 May 2009 07:29:20 +1000
From: Nigel Cunningham <nigel@...onice.net>
To: Pavel Machek <pavel@....cz>
Cc: "Rafael J. Wysocki" <rjw@...k.pl>,
Oliver Neukum <oliver@...kum.org>,
linux-pm@...ts.linux-foundation.org,
tuxonice-devel@...ts.tuxonice.net, linux-kernel@...r.kernel.org
Subject: Re: [TuxOnIce-devel] [RFC] TuxOnIce
Hi.
On Tue, 2009-05-26 at 11:19 +0200, Pavel Machek wrote:
> Hi!
>
> > > If you really have drivers that have exceptionally large memory requirements
> > > (eg. you need to copy video ram), you should tell the system through struct
> > > driver and do accounting at probe and removal of devices.
> >
> > Or perhaps the drivers should allocate memory from a PM notifier (which is
> > called before the freezing of tasks) to avoid the problem?
>
> Yes, that's how it should work for big allocations.
>
> For small allocations... I still believe we should free a bit of
> memory for s2ram so that small allocations can be done without
> problems.
Big vs small shouldn't matter. One simple, clear method of doing things.
Otherwise we won't get the predictability we're seeking.
Nigel
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