linux-kernel - Re: [tip:timers/core] hrtimer: Allow concurrent hrtimer

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Message-ID: <20150513135422.GA24332@gmail.com>
Date:	Wed, 13 May 2015 15:54:22 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Sasha Levin <sasha.levin@...cle.com>, linux-kernel@...r.kernel.org,
	pjt@...gle.com, tglx@...utronix.de, klamm@...dex-team.ru,
	bsegall@...gle.com, hpa@...or.com
Subject: Re: [tip:timers/core] hrtimer: Allow concurrent hrtimer_start() for
 self restarting timers


* Peter Zijlstra <peterz@...radead.org> wrote:

> On Tue, May 12, 2015 at 09:52:09AM -0400, Sasha Levin wrote:
> > Hey Peter,
> > 
> > I seem to be hitting this warning with the latest -next (2015-05-11):
> > 
> > [3344291.055800] WARNING: CPU: 0 PID: 9422 at kernel/time/hrtimer.c:802 hrtimer_forward+0x1f9/0x330()
> 
> Indeed.
> 
> So I can't seem to come up with a pretty solution :-(

I'm running into this rather frequently as well, in -tip integration 
testing, on real hardware, so we need a solution :-/

Thanks,

	Ingo
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