On ?t 15-06-06 09:57:41, David Brownell wrote: > On Thursday 15 June 2006 1:41 am, Pavel Machek wrote: > > On St 14-06-06 18:46:55, David Brownell wrote: > > > On Wednesday 14 June 2006 4:57 pm, Pavel Machek wrote: > > > > > > > My point is that you really want the console enabled in writing phase > > > > of suspend-to-disk. > > > > > > Notice how nicely this generalizes a point that's been made before: > > > Linux should have the ability to exclude certain devices (and their > > > parents) from that first "prepare to suspend" phase. Originally the > > > > No, it does not. If your console needs DMA, you _need_ to stop it. If > > it can work without, you want to keep it enabled. > > > > This has less to do with device types and trees and more to do with > > DMA or not. > > Certainly there are details that need to be worked out, that's the > whole point of fixing some of these console+suspend problems. And > DMA is one of them. > > In this case, DMA only would need to be prevented during the actual > construction of the snapshot -- which is AFTER that "prepare to > suspend" phase, notice! -- so your straw-man doesn't apply. Okay, you _can_ do suspend whole tree but disk and video freeze disk and video create snapshot unfreeze disk and video write snapshot powerdown Question is: looks to me like quite a lot of complexity for very little gain, but... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
