Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755456Ab0HDPvO (ORCPT ); Wed, 4 Aug 2010 11:51:14 -0400 Received: from filtteri5.pp.htv.fi ([213.243.153.188]:43035 "EHLO filtteri5.pp.htv.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754968Ab0HDPvL (ORCPT ); Wed, 4 Aug 2010 11:51:11 -0400 Date: Wed, 4 Aug 2010 18:49:48 +0300 From: Alexander Shishkin To: Bastien ROUCARIES Cc: lkml@vger.kernel.org, "Kirill A. Shutemov" , Thomas Gleixner , John Stultz , Martin Schwidefsky , Andrew Morton , Jon Hunter , Ingo Molnar , Peter Zijlstra , "Paul E. McKenney" , David Howells , Avi Kivity , "H. Peter Anvin" , John Kacur , linux-kernel@vger.kernel.org, Alexander Shishkin Subject: Re: [PATCH] [RFC] notify userspace about time changes Message-ID: <20100804154948.GC28519@shisha.kicks-ass.net> Mail-Followup-To: Bastien ROUCARIES , lkml@vger.kernel.org, "Kirill A. Shutemov" , Thomas Gleixner , John Stultz , Martin Schwidefsky , Andrew Morton , Jon Hunter , Ingo Molnar , Peter Zijlstra , "Paul E. McKenney" , David Howells , Avi Kivity , "H. Peter Anvin" , John Kacur , linux-kernel@vger.kernel.org References: <1280926108-24668-1-git-send-email-virtuoso@slind.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1018 Lines: 25 On Wed, Aug 04, 2010 at 02:54:12 +0200, Bastien ROUCARIES wrote: > On Wed, Aug 4, 2010 at 2:48 PM, Alexander Shishkin wrote: > > Certain userspace applications (like "clock" desktop applets or ntpd) might > > want to be notified when some other application changes the system time. It > > might also be important for an application to be able to distinguish between > > its own and somebody else's time changes. > > Why not implementing somtehing like http://lwn.net/Articles/323658/ a > la plan 9 with a poll callback ? Thanks for pointing this out, I'll investigate this approach. > It will be plan9 compatible and so unix I don't think that plan9 == unix statement is broadly correct, but I don't know enough on the topic yet. Regards, -- Alex -- 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/