Re: [PATCH v6 0/5] ACPI / processor_idle: Add ACPI v6.0 LPI support

[Rafael J. Wysocki]

On Wednesday, June 22, 2016 06:45:15 PM Sudeep Holla wrote:
> Hi Rafael,
> 
> On 14/06/16 15:48, Sudeep Holla 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.
> >
> 
> Gentle ping, was hoping to target this series for v4.8

On my list of things to take care of this week.  But this is a long list ...

Thanks,
Rafael