linux-kernel - Re: [PATCH RT 07/12] dump stack: dont disable preemption during trace

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Message-ID: <alpine.DEB.2.11.1602291606580.3638@nanos>
Date:	Mon, 29 Feb 2016 16:07:36 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Steven Rostedt <rostedt@...dmis.org>
cc:	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>,
	linux-kernel@...r.kernel.org,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Carsten Emde <C.Emde@...dl.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	John Kacur <jkacur@...hat.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: Re: [PATCH RT 07/12] dump stack: dont disable preemption during
 trace

On Mon, 29 Feb 2016, Steven Rostedt wrote:

> On Sat, 27 Feb 2016 11:32:06 +0100
> Sebastian Andrzej Siewior <sebastian@...akpoint.cc> wrote:
> 
> > On 2016-02-26 16:32:42 [-0500], Steven Rostedt wrote:
> > > 3.18.27-rt26-rc1 stable review patch.
> > > If anyone has any objections, please let me know.  
> > 
> > Please merge this one along with "kernel: migrate_disable() do fastpath
> > in atomic & irqs-off". Otherwise we might get recursive with lockdep and
> > CPU-hotplug (if we go after hp->lock in pin_current_cpu()).
> 
> This is in 4.4-rt but not 4.1-rt. I'm currently bringing everything up
> to 4.1-rt, then I'm going to pull 4.1-rt into stable, and then create a
> new round with the changes that happened in 4.4-rt.

Oh nice, I was trying to dig out a time slot to bring 4.1 back up to date ...