Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262188AbTIRXol (ORCPT ); Thu, 18 Sep 2003 19:44:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262185AbTIRXoW (ORCPT ); Thu, 18 Sep 2003 19:44:22 -0400 Received: from fw.osdl.org ([65.172.181.6]:18908 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262240AbTIRXnT (ORCPT ); Thu, 18 Sep 2003 19:43:19 -0400 Date: Thu, 18 Sep 2003 16:43:17 -0700 From: Chris Wright To: linux-kernel@vger.kernel.org Cc: torvalds@osdl.org Subject: [PATCH 12/13] use cpu_relax() in busy loop Message-ID: <20030918164317.P16499@osdlab.pdx.osdl.net> References: <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> <20030918163645.L16499@osdlab.pdx.osdl.net> <20030918163757.M16499@osdlab.pdx.osdl.net> <20030918164006.N16499@osdlab.pdx.osdl.net> <20030918164145.O16499@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: <20030918164145.O16499@osdlab.pdx.osdl.net>; from chrisw@osdl.org on Thu, Sep 18, 2003 at 04:41:45PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 696 Lines: 21 Replace busy loop nop with cpu_relax(). ===== drivers/scsi/i91uscsi.c 1.6 vs edited ===== --- 1.6/drivers/scsi/i91uscsi.c Fri May 2 12:34:33 2003 +++ edited/drivers/scsi/i91uscsi.c Thu Sep 18 11:49:49 2003 @@ -212,7 +212,8 @@ { /* Pause for amount jiffies */ unsigned long the_time = jiffies + amount; - while (time_before_eq(jiffies, the_time)); + while (time_before_eq(jiffies, the_time)) + cpu_relax(); } /*-- forward reference --*/ - 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/