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From: sudeep.holla@arm.com (Sudeep Holla)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v9 0/7] ACPI / processor_idle: Add ACPI v6.0 LPI support
Date: Tue, 12 Jul 2016 12:42:06 +0100	[thread overview]
Message-ID: <5784D78E.7010409@arm.com> (raw)
In-Reply-To: <1467997678-7107-1-git-send-email-sudeep.holla@arm.com>



On 08/07/16 18:07, 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.
>

I was hoping to get this in v4.8 now that merge window is
delayed/extended if you have no further comments on this series.

-- 
Regards,
Sudeep

  parent reply	other threads:[~2016-07-12 11:42 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-08 17:07 [PATCH v9 0/7] ACPI / processor_idle: Add ACPI v6.0 LPI support Sudeep Holla
2016-07-08 17:07 ` [PATCH v9 1/7] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE Sudeep Holla
2016-07-08 17:07 ` [PATCH v9 2/7] ACPI / processor_idle: Add support for Low Power Idle(LPI) states Sudeep Holla
2016-07-16  0:32   ` Rafael J. Wysocki
2016-07-18 15:48     ` Sudeep Holla
2016-07-08 17:07 ` [PATCH v9 3/7] arm64: cpuidle: drop __init section marker to arm_cpuidle_init Sudeep Holla
2016-07-12 15:23   ` Catalin Marinas
2016-07-08 17:07 ` [PATCH v9 4/7] cpuidle: introduce CPU_PM_CPU_IDLE_ENTER macro for ARM{32, 64} Sudeep Holla
2016-07-08 17:07 ` [PATCH v9 5/7] drivers: firmware: psci: initialise idle states using ACPI LPI Sudeep Holla
2016-07-08 17:07 ` [PATCH v9 6/7] arm64: add support for ACPI Low Power Idle(LPI) Sudeep Holla
2016-07-12 15:22   ` Catalin Marinas
2016-07-08 17:07 ` [PATCH v9 7/7] ACPI : enable ACPI_PROCESSOR_IDLE on ARM64 Sudeep Holla
2016-07-12 11:42 ` Sudeep Holla [this message]
2016-07-12 12:09   ` [PATCH v9 0/7] ACPI / processor_idle: Add ACPI v6.0 LPI support Rafael J. Wysocki
2016-07-12 12:59     ` Sudeep Holla
2016-07-14  1:15       ` Rafael J. Wysocki

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