linux-kernel - Re: [PATCH v2 1/2] rtmutex Real-Time Linux: Fixing kernel BUG at kernel/locking/rtmutex.c:997!

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Date:	Tue, 7 Apr 2015 12:56:07 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Mike Galbraith <umgwanakikbuti@...il.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Thavatchai Makphaibulchoke <tmac@...com>,
	linux-kernel@...r.kernel.org, mingo@...hat.com, tglx@...utronix.de,
	linux-rt-users@...r.kernel.org,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: Re: [PATCH v2 1/2] rtmutex Real-Time Linux: Fixing kernel BUG at
 kernel/locking/rtmutex.c:997!

On Tue, Apr 07, 2015 at 12:49:16PM +0200, Mike Galbraith wrote:
> If you have a spot where it'd be nice to do that despite it being 
> somewhat (koff).. discouraged shall we say, you have to do something 
> funky.  Thomas had a patch to not raise sirq unconditionally for -rt 
> to let nohz_full work, but it needs a lock that's converted to an 
> rtmutex in -rt, and which doesn't want to be un-converted.  Ergo, get 
> funky.

I should probably back away slowly at this point.. but got a reference
to a thread that explains the 'problem'?
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