On Sun, Jun 06, 2010 at 05:47:10PM +0200, Vitaly Wool wrote: > 2010/6/6 Matthew Garrett <mjg59@xxxxxxxxxxxxx>: > > The difference between idle-based suspend and opportunistic suspend is > > that the former will continue to wake up for timers and will never be > > entered if something is using CPU, whereas the latter will be entered > > whenever no suspend blocks are held. The problem with opportunistic > > suspend is that you might make the decision to suspend simultaneusly > > with a wakeup event being received. Suspend blocks facilitate > > synchronisation between the kernel and userspace to ensure that all such > > events have been consumed and handld appropriately. > > Right, and then you start taking suspend blockers in kernel here and > there which eventually interferes with runtime PM. Suspend blocks prevent system suspend, not any per-device suspend. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
