Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 22 Feb 2003 16:51:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 22 Feb 2003 16:51:59 -0500 Received: from chaos.physics.uiowa.edu ([128.255.34.189]:8397 "EHLO chaos.physics.uiowa.edu") by vger.kernel.org with ESMTP id ; Sat, 22 Feb 2003 16:51:58 -0500 Date: Sat, 22 Feb 2003 16:02:01 -0600 (CST) From: Kai Germaschewski X-X-Sender: kai@chaos.physics.uiowa.edu To: Hugh Dickins cc: Andrew Morton , Subject: Re: [PATCH] elapsed times wrap In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 886 Lines: 26 On Sat, 22 Feb 2003, Hugh Dickins wrote: > Userspace shows huge elapsed time across jiffies wrap: with USER_HZ > less then HZ, sys_times needs jiffies_64 to calculate its retval. > > --- 2.5.62/kernel/sys.c Sat Feb 15 08:30:12 2003 > +++ linux/kernel/sys.c Fri Feb 21 20:41:52 2003 > @@ -870,7 +870,7 @@ > if (copy_to_user(tbuf, &tmp, sizeof(struct tms))) > return -EFAULT; > } > - return jiffies_to_clock_t(jiffies); > + return (long) jiffies_64_to_clock_t(get_jiffies_64()); > } That makes me wonder, aren't all uses of jiffies_to_clock_t() broken then? Well, all which take an absolute time as an argument at least. --Kai - 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/