From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752671Ab2GPP3e (ORCPT ); Mon, 16 Jul 2012 11:29:34 -0400 Received: from e31.co.us.ibm.com ([32.97.110.149]:42307 "EHLO e31.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751261Ab2GPP3c (ORCPT ); Mon, 16 Jul 2012 11:29:32 -0400 Date: Mon, 16 Jul 2012 08:22:24 -0700 From: "Paul E. McKenney" To: Thomas Gleixner Cc: LKML , Ingo Molnar , Peter Zijlstra , "Srivatsa S. Bhat" , Rusty Russell , Namhyung Kim Subject: Re: [Patch 0/7] Per cpu thread hotplug infrastructure - V3 Message-ID: <20120716152224.GF2403@linux.vnet.ibm.com> Reply-To: paulmck@linux.vnet.ibm.com References: <20120716103749.122800930@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120716103749.122800930@linutronix.de> User-Agent: Mutt/1.5.21 (2010-09-15) X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12071615-7282-0000-0000-00000AF70325 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 16, 2012 at 10:42:34AM -0000, Thomas Gleixner wrote: > The following series implements the infrastructure for parking and > unparking kernel threads to avoid the full teardown and fork on cpu > hotplug operations along with management infrastructure for hotplug > and users. > > Changes vs. V2: > > Use callbacks for all functionality. Thanks to Rusty for pointing > that out. It makes the use sites nice and simple and keeps all the > code which would be duplicated otherwise on the core. Hello, Thomas, What version should I apply this patchset to? I tried v3.5-rc7, but got lots of warnings (one shown below) and the watchdog patch did not apply. Thanx, Paul ------------------------------------------------------------------------ [ 0.280196] BUG: scheduling while atomic: ksoftirqd/1/7/0x00000004 [ 0.280968] Modules linked in: [ 0.282064] Pid: 7, comm: ksoftirqd/1 Not tainted 3.5.0-rc7+ #1559 [ 0.283990] Call Trace: [ 0.284987] [] __schedule_bug+0x49/0x55 [ 0.285975] [] __schedule+0x6ca/0x780 [ 0.286977] [] ? rcu_process_callbacks+0x66/0x130 [ 0.288983] [] ? __local_bh_enable+0x24/0x70 [ 0.289975] [] ? default_wake_function+0xb/0x10 [ 0.291972] [] schedule+0x1e/0x50 [ 0.292969] [] schedule_preempt_disabled+0x12/0x20 [ 0.294975] [] smpboot_thread_fn+0xe8/0x240 [ 0.295968] [] ? smpboot_register_percpu_thread+0xc0/0xc0 [ 0.295969] [] kthread+0x8f/0xa0 [ 0.295969] [] ? flush_kthread_worker+0x80/0x80 [ 0.295969] [] kernel_thread_helper+0x6/0xd