From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Mike Galbraith <umgwanakikbuti@gmail.com>
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>,
linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>
Subject: Re: [PATCH 2/3] locking: ww_mutex: Allow to use rt_mutex instead of mutex for the baselock
Date: Mon, 09 Mar 2015 12:07:43 +0100 [thread overview]
Message-ID: <54FD7EFF.90105@linutronix.de> (raw)
In-Reply-To: <1425898264.9329.10.camel@gmail.com>
On 03/09/2015 11:51 AM, Mike Galbraith wrote:
> Why do both mutex and rtmutex then exist one might ask? ;-) No big deal
> either way though, it's not like it becomes immutable once applied.
You don't choose rtmutex afaik. rtmutex is used by futex (only?) and
one of the things it does is PI.
On -RT we need PI everywhere therefore we s/mutex/rtmutex/.
>
> -Mike
Sebastian
next prev parent reply other threads:[~2015-03-09 11:07 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-27 16:57 rt_mutex based ww_mutex implementation Sebastian Andrzej Siewior
2015-02-27 16:57 ` [PATCH 1/3] locking: ww_mutex: add one level of indirection for access of the lock Sebastian Andrzej Siewior
2015-02-27 18:20 ` Maarten Lankhorst
2015-02-27 18:57 ` Sebastian Andrzej Siewior
2015-02-27 16:57 ` [PATCH 2/3] locking: ww_mutex: Allow to use rt_mutex instead of mutex for the baselock Sebastian Andrzej Siewior
2015-03-02 3:20 ` Mike Galbraith
2015-03-02 8:46 ` Maarten Lankhorst
2015-03-02 12:50 ` Mike Galbraith
2015-03-06 12:14 ` Sebastian Andrzej Siewior
2015-03-06 12:16 ` Maarten Lankhorst
2015-03-06 12:36 ` Sebastian Andrzej Siewior
2015-03-06 17:50 ` Mike Galbraith
2015-03-09 10:00 ` Sebastian Andrzej Siewior
2015-03-09 10:51 ` Mike Galbraith
2015-03-09 11:07 ` Sebastian Andrzej Siewior [this message]
2015-03-09 11:29 ` Mike Galbraith
2015-03-09 13:21 ` Sebastian Andrzej Siewior
2015-03-09 22:27 ` Paul E. McKenney
2015-03-10 12:30 ` Peter Zijlstra
2015-03-10 12:37 ` Peter Zijlstra
2015-03-10 12:39 ` Peter Zijlstra
2015-03-10 14:10 ` Maarten Lankhorst
2015-03-10 15:28 ` Peter Zijlstra
2015-03-10 18:21 ` Maarten Lankhorst
2015-03-10 12:43 ` Peter Zijlstra
2015-03-10 12:46 ` Peter Zijlstra
2015-02-27 16:57 ` [PATCH 3/3] locking: rtmutex: set state back to running on error Sebastian Andrzej Siewior
2015-02-28 10:00 ` [tip:locking/urgent] locking/rtmutex: Set " tip-bot for Sebastian Andrzej Siewior
2015-03-01 5:35 ` [PATCH 3/3] locking: rtmutex: set " Mike Galbraith
2015-03-01 8:48 ` [tip:locking/urgent] locking/rtmutex: Set " tip-bot for Sebastian Andrzej Siewior
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