On Fri, Jul 08, 2016 at 12:04:40PM +0100, Sudeep Holla wrote: > > > On 07/07/16 22:02, Rafael J. Wysocki wrote: > >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. > > > > I can think of addition to indicate it's pm notifiers wrapper. > i.e. CPU_IDLE_ENTER_PM_NOTIFIERS_WRAPPED. Is it too long ? I am happy > with the way it is too. CPU_PM_CPU_IDLE_ENTER() ? Anyway, that's really not a problem IMO, it makes sense to at least mention CPU PM in it given that's what the CPUIDLE enter function is wrapped within. Lorenzo -- 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
