linux-kernel - Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule

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Date:	Fri, 08 Apr 2016 08:35:51 +0200
From:	Mike Galbraith <umgwanakikbuti@...il.com>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	linux-rt-users@...r.kernel.org, linux-kernel@...r.kernel.org,
	Steven Rostedt <rostedt@...dmis.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH RT 4/6] rt/locking: Reenable migration accross schedule

On Thu, 2016-04-07 at 18:47 +0200, Sebastian Andrzej Siewior wrote:

> > If that lock dies, we can unpin when entering lock slow path and pin
> > again post acquisition with no ABBA worries as well, and not only does
> > existing hotplug work heaping truckloads better, -rt can perhaps help
> > spot trouble as the rewrite proceeds.
> > 
> > Current state is more broken than ever.. if that's possible.
> 
> And the two patches you attached here did?

Re-reading your question, no, the only troubles I encountered were the
rt specific woes previously identified.  So the thought that started me
down this path turned up jack-diddly-spit.. but that's not a bad thing,
so I don't consider it to have been a waste of time.

	-Mike