Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754099AbZIKHvG (ORCPT ); Fri, 11 Sep 2009 03:51:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754073AbZIKHvF (ORCPT ); Fri, 11 Sep 2009 03:51:05 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:44861 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753590AbZIKHvE (ORCPT ); Fri, 11 Sep 2009 03:51:04 -0400 Subject: Re: + generic-ipi-fix-the-race-between-generic_smp_call_function_-and-hotplug_cfd.patch added to -mm tree From: Peter Zijlstra To: Xiao Guangrong Cc: akpm@linux-foundation.org, mm-commits@vger.kernel.org, jens.axboe@oracle.com, mingo@elte.hu, nickpiggin@yahoo.com.au, rusty@rustcorp.com.au, suresh.b.siddha@intel.com, LKML In-Reply-To: <4AAA0001.2060703@cn.fujitsu.com> References: <200907310030.n6V0Uqgw001644@imap1.linux-foundation.org> <1252616988.7205.102.camel@laptop> <4AAA0001.2060703@cn.fujitsu.com> Content-Type: text/plain Date: Fri, 11 Sep 2009 09:50:45 +0200 Message-Id: <1252655445.7126.4.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.26.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 489 Lines: 13 On Fri, 2009-09-11 at 15:45 +0800, Xiao Guangrong wrote: > CPU A call smp_call_function_many(wait=0) that want CPU B to call Ah, right, the .wait=0 is the clue, that makes all this get/put_onlines_cpus() useless.. You're right, carry on ;-) -- 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/