Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269024AbTGJHoN (ORCPT ); Thu, 10 Jul 2003 03:44:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269026AbTGJHoM (ORCPT ); Thu, 10 Jul 2003 03:44:12 -0400 Received: from holomorphy.com ([66.224.33.161]:12976 "EHLO holomorphy") by vger.kernel.org with ESMTP id S269024AbTGJHnd (ORCPT ); Thu, 10 Jul 2003 03:43:33 -0400 Date: Thu, 10 Jul 2003 00:59:27 -0700 From: William Lee Irwin III To: Andrew Morton Cc: piet@www.piet.net, schlicht@uni-mannheim.de, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: 2.5.74-mm3 - apm_save_cpus() Macro still bombs out Message-ID: <20030710075927.GS15452@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Andrew Morton , piet@www.piet.net, schlicht@uni-mannheim.de, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20030708223548.791247f5.akpm@osdl.org> <200307091106.00781.schlicht@uni-mannheim.de> <20030709021849.31eb3aec.akpm@osdl.org> <1057815890.22772.19.camel@www.piet.net> <20030710060841.GQ15452@holomorphy.com> <20030710071035.GR15452@holomorphy.com> <20030710001853.5a3597b7.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030710001853.5a3597b7.akpm@osdl.org> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1502 Lines: 47 William Lee Irwin III wrote: >> -#define apm_save_cpus() 0 >> +#define apm_save_cpus() ({ cpumask_t __mask__ = CPU_MASK_NONE; __mask__; }) On Thu, Jul 10, 2003 at 12:18:53AM -0700, Andrew Morton wrote: > Taking a look at what the APM code is actually doing, I think using > current->cpus_allowed just more sense in here. > Not that it matters at all. Going beyond pure substitution: diff -prauN mm3-2.5.74-1/arch/i386/kernel/apm.c mm3-2.5.74-apm-1/arch/i386/kernel/apm.c --- mm3-2.5.74-1/arch/i386/kernel/apm.c 2003-07-09 00:03:25.000000000 -0700 +++ mm3-2.5.74-apm-1/arch/i386/kernel/apm.c 2003-07-10 00:53:51.000000000 -0700 @@ -506,8 +506,6 @@ static void apm_error(char *str, int err * Lock APM functionality to physical CPU 0 */ -#ifdef CONFIG_SMP - static cpumask_t apm_save_cpus(void) { cpumask_t x = current->cpus_allowed; @@ -522,17 +520,6 @@ static inline void apm_restore_cpus(cpum set_cpus_allowed(current, mask); } -#else - -/* - * No CPU lockdown needed on a uniprocessor - */ - -#define apm_save_cpus() 0 -#define apm_restore_cpus(x) (void)(x) - -#endif - /* * These are the actual BIOS calls. Depending on APM_ZERO_SEGS and * apm_info.allow_ints, we are being really paranoid here! Not only - 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/