On Wednesday, 2 of April 2008, Nigel Cunningham wrote: > Hi. > > On Tue, 2008-04-01 at 23:57 +0200, Rafael J. Wysocki wrote: > > On Tuesday, 1 of April 2008, Nigel Cunningham wrote: > > > Hi Rafael etc. > > > > > > On Tue, 2008-04-01 at 22:12 +0200, Rafael J. Wysocki wrote: [--snip--] > > > > > > > > > + * However, drivers may NOT assume anything about the availability of the > > > > > > + * user space at that time and it is not correct to request firmware from > > > > > > + * within @prepare() (it's too late to do that). > > > > > > > > > > That doesn't sound good. It would be good to be able to get drivers to > > > > > request firmware early in the process. > > > > > > > > That will be possible when we drop the freezer. > > > > > > Yeah, but right now, it seems to me to be a bogus limitation for drivers > > > to have no way of automatically loading firmware when you're about to > > > hibernate. (Of course I've since been reminded of the notifier chain - > > > that should probably be mentioned here as the way of achieving this). > > > > This is a tricky stuff, though, because the notifier is used for disabling the > > user mode helpers too ... > > Hmm. Yet another notifier? Well, perhaps it's better to disable user mode helpers directly from freeze_processes(). Still, let's do one thing at a time. :-) > > > By the way, I'm going to go on record now as saying I think dropping the > > > freezer is a silly idea. I'm therefore currently considering including > > > the freezer in TuxOnice from the time it gets dropped from mainline. I > > > know that will only make it less likely that TuxOnIce gets merged, but > > > I've given up caring about that anyway - caring about merging is > > > pointless when the people who decide if it gets merged don't care. > > > > Well, I'm just not sure if dropping the freezer entirely will actually work, > > but we won't know that if we don't try. > > > > There's been a lot of pressure on going into this direction recently and > > in principle it seems to be doable at least for suspend. Hibernation is > > another issue, but IMO it's better to focus on suspend first. > > For suspend, I agree with dropping its use. For hibernation... I'm not sure and that's why I added the comment about the availability of the user space during ->prepare(). Besides, for now, the freezer is necessary anyway, even for suspend. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
