On Thu, 24 Sep 2009 10:42:41 +0530 Arun R Bharadwaj <arun@xxxxxxxxxxxxxxxxxx> wrote: > * Arun R Bharadwaj <arun@xxxxxxxxxxxxxxxxxx> [2009-09-22 16:55:27]: > > Hi Len, (or other acpi folks), > > I had a question regarding ACPI-cpuidle interaction in the current > implementation. > > Currently, every cpu (i.e. acpi_processor) registers to cpuidle as > a cpuidle_device. So every cpu has to go through the process of > setting up the idle states and then registering as a cpuidle device. > > What exactly is the reason behind this? > technically a BIOS can opt to give you C states via ACPI on some cpus, but not on others. in practice when this happens it tends to be a bug.. but it's technically a valid configuration -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
