On Thu, Jul 7, 2016 at 7:10 PM, Sudeep Holla <sudeep.holla@xxxxxxx> wrote: > ACPI 6.0 introduced LPI(Low Power Idle) states that provides an alternate > method to describe processor idle states. It extends the specification > to allow the expression of idle states like C-states selectable by the > OSPM when a processor goes idle, but may affect more than one processor, > and may affect other system components. > > LPI extensions leverages the processor container device(again introduced > in ACPI 6.0) allowing to express which parts of the system are affected > by a given LPI state. It defines the local power states for each node > in a hierarchical processor topology. The OSPM can use _LPI object to > select a local power state for each level of processor hierarchy in the > system. They used to produce a composite power state request that is > presented to the platform by the OSPM. > > Since multiple processors affect the idle state for any non-leaf hierarchy > node, coordination of idle state requests between the processors is > required. ACPI supports two different coordination schemes: Platform > coordinated and OS initiated. > > This series aims at providing basic and initial support for platform > coordinated LPI states. > > v7[7]->v8: > - Replaced HAVE_GENERIC_CPUIDLE_ENTER with CPU_IDLE_ENTER_WRAPPED > macro, which is more cleaner and definately less confusing :) > (Thanks to Rafael for the suggestion) Patches [3-6/6] definitely look a lot cleaner to me now. :-) That said, the name of the macro I suggested was just an example, so if people don't like this one, it'd be fine to change it as far as I'm concerned. Thanks, Rafael -- 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
