Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932387Ab0FBKVd (ORCPT ); Wed, 2 Jun 2010 06:21:33 -0400 Received: from casper.infradead.org ([85.118.1.10]:40779 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932296Ab0FBKVb convert rfc822-to-8bit (ORCPT ); Wed, 2 Jun 2010 06:21:31 -0400 Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8) From: Peter Zijlstra To: Arve =?ISO-8859-1?Q?Hj=F8nnev=E5g?= Cc: Thomas Gleixner , "Rafael J. Wysocki" , Florian Mickler , Matthew Garrett , Alan Stern , Paul@smtp1.linux-foundation.org, LKML , felipe.balbi@nokia.com, Linux OMAP Mailing List , Linux PM , Alan Cox In-Reply-To: References: <201005302202.39511.rjw@sisk.pl> <201005312347.24251.rjw@sisk.pl> <1275471561.27810.30865.camel@twins> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Wed, 02 Jun 2010 12:21:28 +0200 Message-ID: <1275474088.27810.31000.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1589 Lines: 38 On Wed, 2010-06-02 at 03:00 -0700, Arve Hjønnevåg wrote: > 2010/6/2 Peter Zijlstra : > > On Wed, 2010-06-02 at 01:54 -0700, Arve Hjønnevåg wrote: > >> No I want you to stop confusing low power idle modes with suspend. > > > > I think it is you who is confused. For power management purposes suspend > > is nothing more but a deep idle state. > > No, idle is transparent, suspend is not. Which is where the problem is, it should be. > Why would I add suspend blockers to the code I want to prevent running? Because what you want might not be what others want. Suppose you're fine with your torrent client/irc client/etc.. to loose their network connection when you're not behind your desktop so you don't add suspend blockers there. Me, I'd be ready to administer physical violence if either of those lost their connections when I wasn't around to keep the screen-saver from kicking in. This leads to having to sprinkle magic dust (and lots of config options) all over userspace. Something that gets esp interesting with only a boolean interface. In the example above, having an active net connection would prevent my desktop from suspending, but what if another platform can maintain net connections while suspended? Do we then end up with arch specific code in the net-stack? I'm sure DaveM would love that. -- 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/