Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758889AbZIQHpf (ORCPT ); Thu, 17 Sep 2009 03:45:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756973AbZIQHpf (ORCPT ); Thu, 17 Sep 2009 03:45:35 -0400 Received: from casper.infradead.org ([85.118.1.10]:57349 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755854AbZIQHpe (ORCPT ); Thu, 17 Sep 2009 03:45:34 -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: Suresh Siddha , "akpm@linux-foundation.org" , "mm-commits@vger.kernel.org" , "jens.axboe@oracle.com" , "mingo@elte.hu" , "nickpiggin@yahoo.com.au" , "rusty@rustcorp.com.au" , LKML In-Reply-To: <4AB1A652.1010000@cn.fujitsu.com> References: <200907310030.n6V0Uqgw001644@imap1.linux-foundation.org> <1252616988.7205.102.camel@laptop> <4AAA0001.2060703@cn.fujitsu.com> <1252696132.3756.21.camel@sbs-t61.sc.intel.com> <4AADEF2F.5080504@cn.fujitsu.com> <1252973802.2899.88.camel@sbs-t61.sc.intel.com> <4AAEF5DC.4070308@cn.fujitsu.com> <1253067602.2667.13.camel@sbs-t61.sc.intel.com> <4AB1A652.1010000@cn.fujitsu.com> Content-Type: text/plain Date: Thu, 17 Sep 2009 09:45:16 +0200 Message-Id: <1253173516.14935.1.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: 453 Lines: 11 On Thu, 2009-09-17 at 11:00 +0800, Xiao Guangrong wrote: > Waiting all cpu handle its IPI interruption in stop_machine() path will make > it slower, I'm not sure it's OK. It is, its an absolute slow path. -- 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/