Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760702AbXEMVJu (ORCPT ); Sun, 13 May 2007 17:09:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754985AbXEMVJo (ORCPT ); Sun, 13 May 2007 17:09:44 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:39043 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754857AbXEMVJn (ORCPT ); Sun, 13 May 2007 17:09:43 -0400 From: "Rafael J. Wysocki" To: Linus Torvalds Subject: Re: [RFD] Freezing of kernel threads Date: Sun, 13 May 2007 23:14:43 +0200 User-Agent: KMail/1.9.5 Cc: Gautham R Shenoy , Pavel Machek , Oleg Nesterov , Andrew Morton , LKML , Dipankar Sarma , Ingo Molnar , Srivatsa Vaddagiri , Paul E McKenney References: <200705122017.32792.rjw@sisk.pl> <200705132208.23254.rjw@sisk.pl> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200705132314.44688.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1205 Lines: 30 On Sunday, 13 May 2007 22:49, Linus Torvalds wrote: > > On Sun, 13 May 2007, Rafael J. Wysocki wrote: > > > > Besides, the problems with interdependencies that we've had recently are > > related specifically to the CPU hotplug. To be precise, they are related to the > > CPU hotplug notifiers that try to stop kernel threads which may be frozen. > > The other interdependencies don't lead to freezer-related problems. > > Sure they do. We've always had interdependencies and freezer-related > problems. That's why PF_NOFREEZE exists in the first place. Okay, we've already discussed that. I was referring to the recent problems and I should have added "at present" to the last sentence. :-) > Claiming this is somehow CPU hotplug-related is disingenious, since the > freezer hasn't even been used for that historically, yet clearly we *do* > have the NOFREEZE stuff. > > Those kernel threads tend to exists for a reason. Agreed. Greetings, Rafael - 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/