On Wed, 12 Aug 2009, Rafael J. Wysocki wrote: > Hi, > > The following patches introduce a mechanism allowing us to execute device > drivers' suspend and resume callbacks asynchronously during system sleep > transitions, such as suspend to RAM. The idea is explained in the [1/1] patch > message. > > Comments welcome. I get the idea. Not bad. Have you tried it in a serious way? For example, turning on the async_suspend flag for every device? In one way it isn't as efficient as it could be. You fire off a bunch of async threads and then make many of them wait for parent or child devices. They could be doing useful work instead. It would be interesting to invent a way of representing explicitly the non-tree dependencies -- assuming there aren't too many of them! (I can just hear the TI guys hollering about power and timer domains...) Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
