From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965315AbXAYN2k (ORCPT ); Thu, 25 Jan 2007 08:28:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965152AbXAYN2k (ORCPT ); Thu, 25 Jan 2007 08:28:40 -0500 Received: from ogre.sisk.pl ([217.79.144.158]:48718 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965315AbXAYN2j (ORCPT ); Thu, 25 Jan 2007 08:28:39 -0500 From: "Rafael J. Wysocki" To: Pavel Machek Subject: Re: [patch] suspend debugging: simulate suspend-to-RAM Date: Thu, 25 Jan 2007 14:29:24 +0100 User-Agent: KMail/1.9.1 Cc: Ingo Molnar , Andrew Morton , linux-kernel@vger.kernel.org, Linus Torvalds , Len Brown References: <20070125113350.GA31068@elte.hu> <20070125130729.GA23620@elf.ucw.cz> In-Reply-To: <20070125130729.GA23620@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200701251429.25081.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thursday, 25 January 2007 14:07, Pavel Machek wrote: > Hi! > > > Subject: [patch] suspend debugging: simulate suspend-to-RAM > > From: Ingo Molnar > > > > most resume bugs are due to the kernel hanging or crashing while trying > > to resume a specific device. It is extremely hard to debug such hangs > > because often when the hang happens there's no console available > > yet. > > While the functionality is useful, no I do not think this should be > configured by sysctl or kernel parameter. > > Perhaps right interface is "echo fake-mem > /sys/power/state"? Yes, the "test" and "testproc" debug modes are started via /sys/power/state, so let's make it consistent. Greetings, Rafael