From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031366AbXDZR0Q (ORCPT ); Thu, 26 Apr 2007 13:26:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031368AbXDZR0Q (ORCPT ); Thu, 26 Apr 2007 13:26:16 -0400 Received: from mail6.sea5.speakeasy.net ([69.17.117.8]:47331 "EHLO mail6.sea5.speakeasy.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1031366AbXDZR0P (ORCPT ); Thu, 26 Apr 2007 13:26:15 -0400 X-Greylist: delayed 400 seconds by postgrey-1.27 at vger.kernel.org; Thu, 26 Apr 2007 13:26:15 EDT Message-ID: <4630DF19.3060805@kernel.org> Date: Thu, 26 Apr 2007 10:19:21 -0700 From: Josh Triplett User-Agent: Icedove 1.5.0.10 (X11/20070329) MIME-Version: 1.0 To: Pavel Machek CC: linux-kernel@vger.kernel.org, torvalds@linux-foundation.org Subject: Re: suspend2 merge (was Re: [Suspend2-devel] Re: CFS and suspend2: hang in atomic copy) References: 20070425232806.GL17387@elf.ucw.cz Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Pavel Machek wrote: >> For suspend to ram, in contrast, since you *know* that nobody will be >> touching the hardware, and since the timings are very different anyway >> (you'd hope that you can resume in a second or two), you'd generally want >> to keep the DMA engine tables right where they are, and just literally >> suspend the PCI chip itself. > > I'd actually prefer resume to be similar to module insert, too... Do > you think that resume is _that_ time critical? http://www.gettysfamily.org/wordpress/?p=32 http://www.gettysfamily.org/wordpress/?p=33 You cannot resume "too fast"; suspend to RAM should become so fast that you use it without even thinking about it. - Josh Triplett