From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark gross Subject: Re: Plumbers: PM constraints micro-conf RFP Date: Fri, 11 May 2012 07:14:31 -0700 Message-ID: <20120511141431.GB2618@G62> References: <20120502143607.GA21640@G62> Reply-To: markgross@thegnar.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: "Valentin, Eduardo" Cc: Kevin Hilman , "Agarwal, Ramesh" , markgross@thegnar.org, paulmck@vnet.ibm.com, Praveen Chidambaram , Amit Kucheria , Antti P Miettinen , John Stultz , linux-pm@lists.linux-foundation.org, Jean Pihet List-Id: linux-pm@vger.kernel.org On Fri, May 11, 2012 at 10:17:19AM +0300, Valentin, Eduardo wrote: > Hello Mark, > = > On Wed, May 2, 2012 at 5:36 PM, mark gross wrote: > > This is a Request For Participation in a micro-conference at this years > > Linux plumbers event. =A0For this micro conference to happen we need to > > reach a certain critical mass WRT participants as measured by submitted > > talks associated to Power Management Constraints. > = > Nice! Thanks for proposing this. > = > > > > The To: list is populated with folks that I've had interactions with > > over extending pm-qos or constraint based PM over the past year. > > > > If you are working on problems related to constraining the power / > > performance of devices I am inviting your participation and request you > > submit a proposal for presenting your problem space (preferred) and or > > solution to a group of developers looking for a good solution to push > > upstream. =A0The talks will be about 20 min long as I want to get into > > some design and implementation discussions after the requirements > > definition is mostly finished. > > > > I am interested in gathering user mode interface needs as well as kernel > > mode. > > > > From a high level pm-constraints is a generalization of pm-qos to inclu= de > > limiting performance as well as its current limiting of device > > throttling. > > > > As performance limiting is typically used for any of the following: > > 1) staying within thermal operational envelopes > > 2) avoiding peak current > > 3) extending battery life in active use cases > > > > I invite anyone working in any of these areas or pm-qos applications to > > participate in this micro-conference. > > > > I will organize the micro-conference into 2 parts: > > 1) problem statements with specific participant examples where > > constraining the performance or throttling is needed. > = > = > I could bring something on the use cases where this type of > constraining could be used. Essentially major focus gets partitioned > in two areas: For device skin/case temperature management, and IC's > junction temperature management. > = This will be great! Getting the common / typical use cases well represented is the highest priority of the session IMO. Having a solid understanding of them will drive the requirements and hopefully make defining the architecture quick, easy and without a lot of conflicting points of view. --mark