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

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Message-ID: <20160227103206.GA2337@breakpoint.cc>
Date:	Sat, 27 Feb 2016 11:32:06 +0100
From:	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org,
	linux-rt-users <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	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 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()).

Sebastian