linux-kernel - Re: [PATCH 2/2] hrtimers: Add CLOCK_BOOTTIME clockid, hrtimerbase and posix interface

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Date:	Tue, 01 Feb 2011 10:35:31 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Jamie Lokier <jamie@...reable.org>,
	Alexander Shishkin <virtuoso@...nd.org>,
	Arve Hjønnevåg <arve@...roid.com>
Subject: Re: [PATCH 2/2] hrtimers: Add CLOCK_BOOTTIME clockid, hrtimerbase
 and posix interface

On Tue, 2011-02-01 at 15:16 +0100, Thomas Gleixner wrote:
> On Mon, 31 Jan 2011, John Stultz wrote:
> 
> > CLOCK_MONOTONIC stops while the system is in suspend. This is because
> > to applications system suspend is invisible. However, there is a
> > growing set of applications that are wanting to be suspend-aware,
> > but do not want to deal with the complicatoins of CLOCK_REALTIME
> > (which might jump around if settimeofday is called).
> > 
> > For these applications, I propose a new clockid: CLOCK_BOOTTIME.
> > CLOCK_BOOTTIME is idential to CLOCK_MONOTONIC, except it also
> > includes any time spent in suspend.
> > 
> > This patch adds the new CLOCK_BOOTTIME clockid, as well as the
> > infrastructure needed to support hrtimers against it, and the
> > wiring to expose it out via the posix interface.
> 
> Can you please split that into parts:
> 
>     - Add the new functions
>     - Wire up hrtimers, posix-timers

Will do. And will rebase to tip/timers/core.

thanks
-john


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