linux-kernel - Re: RFC: A revised timerfd API

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Message-Id: <1190496385.4035.124.camel@chaos>
Date:	Sat, 22 Sep 2007 23:26:25 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Davide Libenzi <davidel@...ilserver.org>
Cc:	Michael Kerrisk <mtk-manpages@....net>,
	Ulrich Drepper <drepper@...hat.com>, geoff@...are.org.uk,
	lkml <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@....de>,
	Jonathan Corbet <corbet@....net>,
	Randy Dunlap <rdunlap@...otime.net>, vda.linux@...glemail.com,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	David Härdeman <david@...deman.nu>
Subject: Re: RFC: A revised timerfd API

On Sat, 2007-09-22 at 14:07 -0700, Davide Libenzi wrote:
> On Sat, 22 Sep 2007, Michael Kerrisk wrote:
> 
> > So I'm inclined to implement option (b), unless someone has strong
> > objections.  Davide, could I persuade you to help?
> 
> I guess I better do, otherwise you'll continue to stress me ;)
> 
> int timerfd_create(int clockid);
> int timerfd_settime(int ufd, int flags,
>                     const struct itimerspec *utmr,
>                     struct itimerspec *otmr);
> int timerfd_gettime(int ufd, struct itimerspec *otmr);
> 
> Patch below. Builds, not tested yet (you need to remove the "broken" 
> status from CONFIG_TIMERFD in case you want to test - and plug the new 
> syscall to arch/xxx).
> May that work for you?
> Thomas-san, hrtimer_try_to_cancel() does not touch ->expires and I assume
> it'll never do, granted?

Davide-san, I have no intention to change that, but remember there is
this file "Documentation/stable_api_nonsense.txt" :)

	tglx



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