On Sun, Jun 06, 2010 at 05:47:10PM +0200, Vitaly Wool wrote: > 2010/6/6 Matthew Garrett <[email protected]>: > > 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 | [email protected] -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
