Matthew: Remind me why the idle/QOS power management approach won't work here. If the difficulty is untrusted apps preventing the system from being idle, why not assign them to QoS(NONE) as Thomas suggested? If the difficulty is that some untrusted apps need to receive wakeup events, why not just decree that this is not allowed? It seems reasonable that if you can't trust a program then you shouldn't allow it to wake up the system. If the difficulty is that some trusted apps need to do CPU-burning things like drawing bouncing cows in the background, why not break these apps into two processes or threads? One can be trusted and receive all the wakeup events, and the other can be untrusted and draw all the cows it likes. We're only talking about trusted apps, most of which would be controlled by Google, so the conversion shouldn't be too hard. If the difficulty is that ACPI-based systems can't use idle/QOS PM effectively... well, so be it. We don't have to solve every problem in the world right away, and just now we're mainly concerned about helping the Android people. Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
