Re: [TuxOnIce-devel] [RFC] TuxOnIce
From: Nigel Cunningham
Date: Mon May 25 2009 - 20:41:21 EST
On Tue, 2009-05-26 at 00:58 +0200, Rafael J. Wysocki wrote:
> On Tuesday 26 May 2009, Oliver Neukum wrote:
> > Am Montag, 25. Mai 2009 23:43:23 schrieb Rafael J. Wysocki:
> > > > Oh, before I forget to mention and you ask - how to know what allowance
> > > > for the drivers? I use a sysfs entry - the user then just needs to see
> > > > what's needed on their first attempt, set up a means of putting that
> > > > value in the sysfs file in future (eg /etc/hibernate/tuxonice.conf) and
> > > > then forget about it.
> > >
> > > OK, this is reasonable.
> > No, I am afraid it is not. The average user has no clue. Even if that
> > is not the problem, the user never knows for sure he has encountered
> > the worst case.
> OK there, but surely it's better to have a sysfs attribute than a fixed value?
> > 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?
That would work.
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