Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262205AbTIRXdP (ORCPT ); Thu, 18 Sep 2003 19:33:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262207AbTIRXdP (ORCPT ); Thu, 18 Sep 2003 19:33:15 -0400 Received: from fw.osdl.org ([65.172.181.6]:7126 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262205AbTIRXdM (ORCPT ); Thu, 18 Sep 2003 19:33:12 -0400 Date: Thu, 18 Sep 2003 16:33:11 -0700 From: Chris Wright To: linux-kernel@vger.kernel.org Cc: torvalds@osdl.org Subject: [PATCH 5/13] use cpu_relax() in busy loop Message-ID: <20030918163311.I16499@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> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20030918163156.H16499@osdlab.pdx.osdl.net>; from chrisw@osdl.org on Thu, Sep 18, 2003 at 04:31:56PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 875 Lines: 28 Replace busy loop nop with cpu_relax(). ===== drivers/char/isicom.c 1.25 vs edited ===== --- 1.25/drivers/char/isicom.c Mon Aug 18 10:39:47 2003 +++ edited/drivers/char/isicom.c Thu Sep 18 10:54:12 2003 @@ -153,12 +153,14 @@ inw(base+0x8); - for(i=jiffies+HZ/100;time_before(jiffies, i);); + for(i=jiffies+HZ/100;time_before(jiffies, i);) + cpu_relax(); outw(0,base+0x8); /* Reset */ for(j=1;j<=3;j++) { - for(i=jiffies+HZ;time_before(jiffies, i);); + for(i=jiffies+HZ;time_before(jiffies, i);) + cpu_relax(); printk("."); } signature=(inw(base+0x4)) & 0xff; - 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/