On Mon, May 03, 2010 at 04:37:22PM -0700, Kevin Hilman wrote: > Please forgive the ignorance of ACPI (in embedded, we thankfully live > in magical world without ACPI) but doesn't that already happen with > CPUidle and C-states? I think of CPUidle as basically runtime PM for > the CPU. IOW, runtime PM manages the devices, CPUidle manages the CPU > (via C-states), resulting in dynaimc PM for the entire system. What > am I missing? ACPI doesn't provide any functionality for cutting power to most devices other than shifting into full system suspend. The number of wakeup events available to us on a given machine is usually small and the wakeup latency large, so it's not terribly practical to do this transparently on most hardware. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
