From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: CE Linux Forum PM Requierments WiKi is available for review and comment. Date: Tue, 21 Mar 2006 21:36:21 +0100 Message-ID: <20060321203621.GH3929@elf.ucw.cz> References: <5389061B65D50446B1783B97DFDB392D13D1B6@orsmsx411.amr.corp.intel.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============99940092754806154==" Return-path: In-Reply-To: <5389061B65D50446B1783B97DFDB392D13D1B6@orsmsx411.amr.corp.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.osdl.org Errors-To: linux-pm-bounces@lists.osdl.org To: "Gross, Mark" Cc: linux-pm@osdl.org, PMWG@LIST.CELINUXFORUM.ORG, mli_tech@groups.osdl.org, celinux-dev@tree.celinuxforum.org List-Id: linux-pm@vger.kernel.org --===============99940092754806154== Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi! > >4. device power management seems to be missing. What is "OS > >throttling"? > > > > I'll add some stuff on device power management. > > OS throttling is the pacing of work the OS is allowed to do to maintain > some power or thermal budget constraints. Hmm, okay, yes, that would be useful for machines that can't do throttling in hardware. > >7.1 if your hardware can damage itself or hurt user *FIX YOUR > >HARDWARE*! Will you argue that overcharging li-ion to explosion is also > ok? > > Having your hardware catch on fire or exploding is not ok. I'll > re-write this a bit to avoid the inference of buggy hardware. The > point is that software support is needed to do a good job for some of > these applications. > > However; Having the OS help avoid deep discharging your cell phone or > I-Pod battery because of some bug would not be unreasonable. Do li-ion batteries really care about deep discharging in cellphone/ipod applications? I thought single-li-ion solutions don't mind being deeply discharged. (In fact, that's what I'm now doing with li-ion in sharp sl-5500 -- collie; I'm running without any powermanagement, so it dies when battery can no longer support CPU. I guess that's counts as deep discharge.) > Neither is having OS support running on hardware that is built without > active cooling that avoids the HW doing an emergency power off and > loosing the users data. NMI watchdog / SMM comes to mind. But SMM is unlikely to be option on Arm machines. > >-- > >Thanks, Sharp! > > Who the heck is Sharp, and why do you always thank him? That's a signature... Sharp is Japaneese firm, maybe you've heard about them :-). Send me handheld computer, and that line becomes "Thanks, Intel" ;-). Pavel -- Picture of sleeping (Linux) penguin wanted... --===============99940092754806154== Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline --===============99940092754806154==--