Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753558Ab0HGNHW (ORCPT ); Sat, 7 Aug 2010 09:07:22 -0400 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:38536 "EHLO opensource2.wolfsonmicro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751515Ab0HGNHV (ORCPT ); Sat, 7 Aug 2010 09:07:21 -0400 Date: Sat, 7 Aug 2010 14:07:18 +0100 From: Mark Brown To: "Paul E. McKenney" Cc: david@lang.hm, Brian Swetland , kevin granade , Arve Hj?nnev?g , Matthew Garrett , "Rafael J. Wysocki" , Arjan van de Ven , linux-pm@lists.linux-foundation.org, linux-kernel@vger.kernel.org, pavel@ucw.cz, florian@mickler.org, stern@rowland.harvard.edu, peterz@infradead.org, tglx@linutronix.de, alan@lxorguk.ukuu.org.uk Subject: Re: Attempted summary of suspend-blockers LKML thread Message-ID: <20100807130718.GC11817@opensource.wolfsonmicro.com> References: <20100806123047.GE31326@sirena.org.uk> <20100806172226.GH2432@linux.vnet.ibm.com> <20100806173325.GA25367@rakim.wolfsonmicro.main> <20100806181832.GJ2432@linux.vnet.ibm.com> <20100807001431.GA3252@opensource.wolfsonmicro.com> <20100807003642.GQ2432@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100807003642.GQ2432@linux.vnet.ibm.com> X-Cookie: You will forget that you ever knew me. User-Agent: Mutt/1.5.17+20080114 (2008-01-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1315 Lines: 25 On Fri, Aug 06, 2010 at 05:36:42PM -0700, Paul E. McKenney wrote: > On Sat, Aug 07, 2010 at 01:14:32AM +0100, Mark Brown wrote: > > services in themselves (like system monitoring). It's really just > > semantics to treat them differently to something like a cellular modem - > > at a high level they're both just independant processors ticking away > > without the application processor. > I agree that a smartphone's cellular modem can be argued to be very > similar to wake-on-LAN. The smartphone applications that seem to me > to be very different from wake-on-LAN are things like audio playback, > where the system is providing service to the user during the time that > it is suspended. The cellular modem case includes not just hanging off the network but also being on a call - the voice path for a phone call doesn't need the CPU to do anything. It's probably best to view a phone as a bunch of interconnected systems that happen to sit in the same box, and there's various design decisions that can be taken about which systems own the shared components. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/