Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263460AbUDUQhz (ORCPT ); Wed, 21 Apr 2004 12:37:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263472AbUDUQhz (ORCPT ); Wed, 21 Apr 2004 12:37:55 -0400 Received: from mtagate2.de.ibm.com ([195.212.29.151]:57993 "EHLO mtagate2.de.ibm.com") by vger.kernel.org with ESMTP id S263460AbUDUQhw convert rfc822-to-8bit (ORCPT ); Wed, 21 Apr 2004 12:37:52 -0400 Subject: Re: [PATCH] s390 (9/9): no timer interrupts in idle. To: Christoph Hellwig Cc: akpm@osdl.org, linux-kernel@vger.kernel.org X-Mailer: Lotus Notes Release 5.0.11 July 24, 2002 Message-ID: From: Martin Schwidefsky Date: Wed, 21 Apr 2004 18:37:29 +0200 X-MIMETrack: Serialize by Router on D12ML062/12/M/IBM(Release 6.0.2CF2|July 23, 2003) at 21/04/2004 18:37:31 MIME-Version: 1.0 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 938 Lines: 28 > > This would mean that all other arches need to do the above three > > statements in rcu_start_batch. If this is acceptable we certainly > > can introduce a global idle_cpu_mask. Where? sched.c? > > My hope was gcc would actually optimize it away if it was a CPP constant > instead of a variable. Now I got it. You want to introduce a generic idle_cpu_mask which is a #define to CPU_MASK_NONE and only an exploiter would use a real variable. This is just a matter of test. I'll give it a try. blue skies, Martin Linux/390 Design & Development, IBM Deutschland Entwicklung GmbH Sch?naicherstr. 220, D-71032 B?blingen, Telefon: 49 - (0)7031 - 16-2247 E-Mail: schwidefsky@de.ibm.com - 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/