Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262193AbTIRX3c (ORCPT ); Thu, 18 Sep 2003 19:29:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262197AbTIRX3c (ORCPT ); Thu, 18 Sep 2003 19:29:32 -0400 Received: from fw.osdl.org ([65.172.181.6]:9427 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262193AbTIRX3b (ORCPT ); Thu, 18 Sep 2003 19:29:31 -0400 Date: Thu, 18 Sep 2003 16:29:30 -0700 From: Chris Wright To: linux-kernel@vger.kernel.org Cc: torvalds@osdl.org Subject: [PATCH 3/13] use cpu_relax() in busy loop Message-ID: <20030918162930.G16499@osdlab.pdx.osdl.net> References: <20030918162522.E16499@osdlab.pdx.osdl.net> <20030918162748.F16499@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: <20030918162748.F16499@osdlab.pdx.osdl.net>; from chrisw@osdl.org on Thu, Sep 18, 2003 at 04:27:48PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 743 Lines: 21 Replace busy loop nop with cpu_relax(). ===== drivers/block/ps2esdi.c 1.69 vs edited ===== --- 1.69/drivers/block/ps2esdi.c Wed Sep 10 18:18:39 2003 +++ edited/drivers/block/ps2esdi.c Thu Sep 18 10:45:34 2003 @@ -550,7 +550,8 @@ printk("%s: hard reset...\n", DEVICE_NAME); outb_p(CTRL_HARD_RESET, ESDI_CONTROL); expire = jiffies + 2*HZ; - while (time_before(jiffies, expire)); + while (time_before(jiffies, expire)) + cpu_relax(); outb_p(1, ESDI_CONTROL); } /* hard reset */ - 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/