Re: [tip:timers/core] timerfd: Allow timers to be cancelled whenclock was set

[Kay Sievers]

On Wed, May 11, 2011 at 12:23, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> On Mon, 2011-05-02 at 19:44 +0000, tip-bot for Thomas Gleixner wrote:
>> Commit-ID: Â99ee5315dac6211e972fa3f23bcc9a0343ff58c4
>> Gitweb: Â Â http://git.kernel.org/tip/99ee5315dac6211e972fa3f23bcc9a0343ff58c4
>> Author: Â Â Thomas Gleixner <tglx@xxxxxxxxxxxxx>
>> AuthorDate: Wed, 27 Apr 2011 14:16:42 +0200
>> Committer: ÂThomas Gleixner <tglx@xxxxxxxxxxxxx>
>> 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
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