Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755604Ab1EKPuO (ORCPT ); Wed, 11 May 2011 11:50:14 -0400 Received: from mail-yi0-f46.google.com ([209.85.218.46]:58975 "EHLO mail-yi0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755423Ab1EKPuK convert rfc822-to-8bit (ORCPT ); Wed, 11 May 2011 11:50:10 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=vrfy.org; s=google; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type:content-transfer-encoding; b=M1eZ17b1YGgGhdwxNVbl51Y70+coHL+UjiIA/8aNvMUOCKbMG0dgGJL0E2zXiJFis/ MZZfcszHnqwnaSQPe59+W8BDBcEB3smJK1eyQWE+5+xrw/3J/JvB08PDFNKljAKwgMg1 RW35ZEvmwLvB8Q+kswHVjbHJ6UhsNRRMrG+MM= MIME-Version: 1.0 In-Reply-To: <1305109433.2914.208.camel@laptop> References: <1305109433.2914.208.camel@laptop> From: Kay Sievers Date: Wed, 11 May 2011 13:58:47 +0200 Message-ID: Subject: Re: [tip:timers/core] timerfd: Allow timers to be cancelled when clock was set To: Peter Zijlstra Cc: linux-kernel@vger.kernel.org, mingo@redhat.com, hpa@zytor.com, johnstul@us.ibm.com, davidel@xmailserver.org, virtuoso@slind.org, tglx@linutronix.de, chris.friesen@genband.com, kirill@shutemov.name, linux-tip-commits@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1313 Lines: 28 On Wed, May 11, 2011 at 12:23, Peter Zijlstra wrote: > On Mon, 2011-05-02 at 19:44 +0000, tip-bot for Thomas Gleixner wrote: >> Commit-ID:  99ee5315dac6211e972fa3f23bcc9a0343ff58c4 >> Gitweb:     http://git.kernel.org/tip/99ee5315dac6211e972fa3f23bcc9a0343ff58c4 >> Author:     Thomas Gleixner >> AuthorDate: Wed, 27 Apr 2011 14:16:42 +0200 >> Committer:  Thomas Gleixner >> CommitDate: Mon, 2 May 2011 21:39:15 +0200 >> >> timerfd: Allow timers to be cancelled when clock was set >> >> Some applications must be aware of clock realtime being set >> backward. A simple example is a clock applet which arms a timer for >> the next minute display. If clock realtime is set backward then the >> applet displays a stale time for the amount of time which the clock >> was set backwards. Due to that applications poll the time because we >> don't have an interface. > > Shouldn't that clock applet use CLOCK_MONOTONIC for the timer anyway? Like: Hey let's meet at the bar 5 hours after bootup? :) Kay -- 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/