linux-kernel - Re: [PATCH 2/3] locking: ww_mutex: Allow to use rt

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Message-ID: <1425266436.7429.8.camel@gmail.com>
Date:	Mon, 02 Mar 2015 04:20:36 +0100
From:	Mike Galbraith <umgwanakikbuti@...il.com>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Maarten Lankhorst <maarten.lankhorst@...onical.com>
Subject: Re: [PATCH 2/3] locking: ww_mutex: Allow to use rt_mutex instead of
 mutex for the baselock

On Fri, 2015-02-27 at 17:57 +0100, Sebastian Andrzej Siewior wrote:
> This patch makes it possible to replace the base mutex by a rt_mutex. In
> general one would not do this.

I would argue that the thing should be born as a full fledged primitive,
not a config option, as an rt_ww_mutex is the ww extension of rt_mutex.
We have to do the global substitution in -rt, but why should it not
exist in its own right in mainline? 

	-Mike

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