Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753981AbXKRTKO (ORCPT ); Sun, 18 Nov 2007 14:10:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751500AbXKRTKB (ORCPT ); Sun, 18 Nov 2007 14:10:01 -0500 Received: from ug-out-1314.google.com ([66.249.92.172]:20215 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751385AbXKRTKA (ORCPT ); Sun, 18 Nov 2007 14:10:00 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:x-enigmail-version:content-type:content-transfer-encoding; b=eegMsowBsfB3GW9Ltn0IWVFTltuyFAIbEr41yT7ESsjdETNRyhbDlvrjBIaG4F75w30+xqA2t6GtNhTP+xYgiFQaBrKVCy/kECsv+rAi/oF8DQ7RV7KdAVE4sJq6SY6h45G8xze+lZbCHLgIq5XJeDd62DHedSTIOgJfng94ON0= Message-ID: <47408DFF.9070701@gmail.com> Date: Sun, 18 Nov 2007 20:09:51 +0100 From: Jiri Slaby User-Agent: Thunderbird 2.0.0.9 (X11/20071031) MIME-Version: 1.0 To: Alan Stern CC: "Rafael J. Wysocki" , Andrew Morton , Greg KH , Kernel development list , Linux-pm mailing list Subject: Re: broken suspend [Was: 2.6.24-rc2-mm1] References: In-Reply-To: X-Enigmail-Version: 0.95.5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1687 Lines: 45 On 11/18/2007 06:07 PM, Alan Stern wrote: > You'll get more useful results if you redo your changes to > notifier_call_chain(). Have it print out the address of the routine > _before_ making the call, and don't limit it to 20. That way you'll > know exactly which notifier routine ends up hanging. The problem is, that notifier_call_chain is called again and again zillion times by somebody else... Anyway you led me to another idea: * _cpu_down printk("%s: u\n", __func__); BUBAK=1; /* CPU is completely dead: tell everyone. Too late to complain. */ if (raw_notifier_call_chain(&cpu_chain, CPU_DEAD | 0x88000 | mod, hcpu) == NOTIFY_BAD) BUG(); BUBAK=0; ----- * notifier_call_chain unsigned int a = val & 0x88000; unsigned int yes = a == 0x88000; nb = rcu_dereference(*nl); if (a && a != 0x88000) printk("Somebody calls with val: %lx\n", val); else val &= ~0x88000; while (nb && nr_to_call) { next_nb = rcu_dereference(nb->next); if (unlikely(BUBAK && yes)) printk("%s: %p\n", __func__, nb->notifier_call); ret = nb->notifier_call(nb, val, v); ----- gives coretemp_cpu_callback -> coretemp_device_remove -> platform_device_unregister, so coretemp seems to be what I have and you don't. - 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/