linux-kernel - Re: PREEMPT_RT vs 'hrtimer: Prevent hrtimer_enqueue

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Message-ID: <alpine.LFD.2.02.1303221028250.22263@ionos>
Date:	Fri, 22 Mar 2013 10:28:53 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Steven Rostedt <rostedt@...dmis.org>
cc:	Ben Hutchings <ben@...adent.org.uk>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...tedt.homelinux.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Leonid Shatz <leonid.shatz@...ellosystems.com>,
	Ingo Molnar <mingo@...e.hu>,
	Debian kernel maintainers <debian-kernel@...ts.debian.org>
Subject: Re: PREEMPT_RT vs 'hrtimer: Prevent hrtimer_enqueue_reprogram
 race'

On Thu, 21 Mar 2013, Steven Rostedt wrote:

> On Fri, 2013-03-22 at 03:24 +0000, Ben Hutchings wrote:
> 
> > > Note, I posted a fix on Tuesday:
> > > 
> > > https://lkml.org/lkml/2013/3/19/369
> > 
> > Thanks.  I did search GMANE with some obvious terms but I think its
> > index is lagging.
> 
> It didn't help that my subject had no mention of -rt in it :-(
> 
> > I'm rebasing the rt patch series generated with
> > 'git format-patch v3.2.39..v3.2.39-rt59-rebase' on top of v3.2.41 (plus
> > Debian changes, which introduce some trivial textual conflicts).
> 
> Ah, OK, I do it the opposite way. As the stable rt git never rebases, I
> always merge the latest stable into my tree. I then create a rebased
> tree as well. When I do that, I'm sure I'll end up fixing the patches up
> pretty much the same as you have.

Looks correct. The fixup is pretty obvious.

Thanks,

	tglx
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