From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932066AbcFNOYz (ORCPT ); Tue, 14 Jun 2016 10:24:55 -0400 Received: from foss.arm.com ([217.140.101.70]:59049 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752234AbcFNOYu (ORCPT ); Tue, 14 Jun 2016 10:24:50 -0400 Subject: Re: [PATCH v5 2/5] ACPI / processor_idle: Add support for Low Power Idle(LPI) states To: "Rafael J. Wysocki" References: <1462981062-24909-1-git-send-email-sudeep.holla@arm.com> <1462981062-24909-3-git-send-email-sudeep.holla@arm.com> <575AFAF9.3020606@arm.com> <6013371.oAQ1sZvyYq@vostro.rjw.lan> Cc: Sudeep Holla , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Vikas Sajjan , Sunil , Prashanth Prakash , Ashwin Chaugule , Al Stone , Lorenzo Pieralisi From: Sudeep Holla Organization: ARM Message-ID: <576013AD.4040400@arm.com> Date: Tue, 14 Jun 2016 15:24:45 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <6013371.oAQ1sZvyYq@vostro.rjw.lan> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 13/06/16 22:05, Rafael J. Wysocki wrote: > On Friday, June 10, 2016 06:38:01 PM Sudeep Holla wrote: >> Hi Rafael, > > Hi, > >> On 11/05/16 16:37, Sudeep Holla wrote: >>> ACPI 6.0 introduced an optional object _LPI that provides an alternate >>> method to describe Low Power Idle states. 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 patch adds initial support for Platform coordination scheme of LPI. >>> >> >> I have added support for autopromote states(basically skip flattening or >> creating composite state). I have also fixed the bug discussed in this >> thread with Prashant. Do you have any other feedback on this version >> that I incorporate before posting next version. > > I'd really preferred it if you posted the next version without waiting for > my feedback to the previous one (as the feedback may not be relevant any > more among other things). > Sure, will do that soon. -- Regards, Sudeep