Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262208AbTIRXh7 (ORCPT ); Thu, 18 Sep 2003 19:37:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262217AbTIRXh7 (ORCPT ); Thu, 18 Sep 2003 19:37:59 -0400 Received: from fw.osdl.org ([65.172.181.6]:55000 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262208AbTIRXgq (ORCPT ); Thu, 18 Sep 2003 19:36:46 -0400 Date: Thu, 18 Sep 2003 16:36:45 -0700 From: Chris Wright To: linux-kernel@vger.kernel.org Cc: torvalds@osdl.org Subject: [PATCH 8/13] use cpu_relax() in busy loop Message-ID: <20030918163645.L16499@osdlab.pdx.osdl.net> References: <20030918162522.E16499@osdlab.pdx.osdl.net> <20030918162748.F16499@osdlab.pdx.osdl.net> <20030918162930.G16499@osdlab.pdx.osdl.net> <20030918163156.H16499@osdlab.pdx.osdl.net> <20030918163311.I16499@osdlab.pdx.osdl.net> <20030918163408.J16499@osdlab.pdx.osdl.net> <20030918163523.K16499@osdlab.pdx.osdl.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20030918163523.K16499@osdlab.pdx.osdl.net>; from chrisw@osdl.org on Thu, Sep 18, 2003 at 04:35:23PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 771 Lines: 23 Replace busy loop rep_nop() with cpu_relax(). This is bordering on a gratuitous change given the i386 def'n of cpu_relax(). But I was fixing up other busy loops, and my grep found this one. ===== arch/i386/kernel/smpboot.c 1.64 vs edited ===== --- 1.64/arch/i386/kernel/smpboot.c Mon Aug 18 19:46:23 2003 +++ edited/arch/i386/kernel/smpboot.c Thu Sep 18 10:07:18 2003 @@ -378,7 +378,7 @@ */ if (cpu_isset(cpuid, cpu_callout_map)) break; - rep_nop(); + cpu_relax(); } if (!time_before(jiffies, timeout)) { - 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/