Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932791Ab0HDMyY (ORCPT ); Wed, 4 Aug 2010 08:54:24 -0400 Received: from mail-bw0-f46.google.com ([209.85.214.46]:57039 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932703Ab0HDMyO (ORCPT ); Wed, 4 Aug 2010 08:54:14 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=T9CTneY/l8KFrY6zYeZriCQl18NOA6RevQhIVQ9bQEuHGM9qCGgww1/ZHUnGljX032 DYotBORbEIbMN0P4s5qO3AS4IMU5qhRFczReA8vnNxAQNYxD+OulhvaXG9FZeKcvZ/xM bKymqO8thLaTRgQjmX53fpp8M3JI/GwPWQWiA= MIME-Version: 1.0 In-Reply-To: <1280926108-24668-1-git-send-email-virtuoso@slind.org> References: <1280926108-24668-1-git-send-email-virtuoso@slind.org> Date: Wed, 4 Aug 2010 14:54:12 +0200 Message-ID: Subject: Re: [PATCH] [RFC] notify userspace about time changes From: Bastien ROUCARIES To: Alexander Shishkin 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 Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 757 Lines: 17 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 ? It will be plan9 compatible and so unix Bastien -- 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/