Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760171Ab0HLOJd (ORCPT ); Thu, 12 Aug 2010 10:09:33 -0400 Received: from cassiel.sirena.org.uk ([80.68.93.111]:45807 "EHLO cassiel.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753542Ab0HLOJc (ORCPT ); Thu, 12 Aug 2010 10:09:32 -0400 Date: Thu, 12 Aug 2010 15:09:03 +0100 From: Mark Brown To: Felipe Contreras Cc: Theodore Tso , paulmck@linux.vnet.ibm.com, Alan Cox , david@lang.hm, Brian Swetland , linux-pm@lists.linux-foundation.org, linux-kernel@vger.kernel.org, arve@android.com, mjg59@srcf.ucam.org, pavel@ucw.cz, florian@mickler.org, rjw@sisk.pl, stern@rowland.harvard.edu, peterz@infradead.org, tglx@linutronix.de, menage@google.com, david-b@pacbell.net, James.Bottomley@suse.de, arjan@infradead.org, swmike@swm.pp.se, galibert@pobox.com, dipankar@in.ibm.com Subject: Re: Attempted summary of suspend-blockers LKML thread, take three Message-ID: <20100812140903.GB11362@sirena.org.uk> References: <20100809181638.GI3026@linux.vnet.ibm.com> <20100811222854.GJ2516@linux.vnet.ibm.com> <20100812010612.GL2516@linux.vnet.ibm.com> <20100812034435.GA7403@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Cookie: Nice guys don't finish nice. User-Agent: Mutt/1.5.18 (2008-05-17) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: broonie@sirena.org.uk X-SA-Exim-Scanned: No (on cassiel.sirena.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 927 Lines: 18 On Thu, Aug 12, 2010 at 02:11:22PM +0300, Felipe Contreras wrote: > So far, nobody has refuted these: > 1) opportunistic suspend needs a good behaved user-space to work properly > 2) if suspend blockers are enabled in a system, *all* user-space must > implement them to work correctly For this note that there's a fairly strong expectation that even in a phone type environment a sane userspace implementation will involve a very large portion of userspace just totally ignoring suspend blockers. This means that while it is true that userspace as a whole must have support for suspend blockers the changes required are substantially less invasive than you appear to expecting. -- 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/