From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933699AbZIDQz4 (ORCPT ); Fri, 4 Sep 2009 12:55:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932751AbZIDQzz (ORCPT ); Fri, 4 Sep 2009 12:55:55 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:46005 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932588AbZIDQzz (ORCPT ); Fri, 4 Sep 2009 12:55:55 -0400 Date: Fri, 4 Sep 2009 17:55:49 +0100 From: Matthew Garrett To: Alessandro Zummo Cc: rtc-linux@googlegroups.com, linux-kernel@vger.kernel.org Subject: Re: [rtc-linux] Re: [PATCH 2/2] rtc: Add boot_timesource sysfs attribute Message-ID: <20090904165549.GA25802@srcf.ucam.org> References: <1252081568-6000-1-git-send-email-mjg@redhat.com> <1252081568-6000-2-git-send-email-mjg@redhat.com> <20090904182528.591dbd29@i1501.lan.towertech.it> <20090904163029.GA25239@srcf.ucam.org> <20090904183828.4376236e@i1501.lan.towertech.it> <20090904164127.GB25419@srcf.ucam.org> <20090904185243.53c9b440@i1501.lan.towertech.it> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090904185243.53c9b440@i1501.lan.towertech.it> User-Agent: Mutt/1.5.18 (2008-05-17) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 04, 2009 at 06:52:43PM +0200, Alessandro Zummo wrote: > that's ok, but nonetheless there's a problem in hwclock > if it takes 3 secs to read the time. The 3-second case is with virtualised access to the cmos, but you're right that it does sound excessive. Even so, it seems like a win to be able to avoid running code that the kernel's already run -- Matthew Garrett | mjg59@srcf.ucam.org