From: Ingo Molnar <mingo@elte.hu>
To: "Perez-Gonzalez, Inaky" <inaky.perez-gonzalez@intel.com>
Cc: Sven-Thorsten Dietrich <sdietrich@mvista.com>,
Daniel Walker <dwalker@mvista.com>,
linux-kernel@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>,
Esben Nielsen <simlo@phys.au.dk>, Joe Korty <joe.korty@ccur.com>
Subject: Re: [PATCH] Priority Lists for the RT mutex
Date: Mon, 11 Apr 2005 10:42:17 +0200 [thread overview]
Message-ID: <20050411084217.GA9784@elte.hu> (raw)
In-Reply-To: <F989B1573A3A644BAB3920FBECA4D25A02F64C64@orsmsx407>
* Perez-Gonzalez, Inaky <inaky.perez-gonzalez@intel.com> wrote:
> >OTOH, deadlock detection is another issue. It's quite expensive and i'm
> >not sure we want to make it a runtime thing. But for fusyn's deadlock
> >detection and safe teardown on owner-exit is a must-have i suspect?
>
> Not really. Deadlock check is needed on PI, so it can be done at the
> same time (you have to walk the chain anyway). In any other case, it
> is an option you can request (or not).
well, i was talking about the mutex code in PREEMPT_RT. There deadlock
detection is an optional debug feature. You dont _have_ to do deadlock
detection for the kernel's locks, and there's a difference in
performance.
Ingo
next prev parent reply other threads:[~2005-04-11 8:43 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-11 8:27 [PATCH] Priority Lists for the RT mutex Perez-Gonzalez, Inaky
2005-04-11 8:42 ` Ingo Molnar [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-05-06 18:13 Perez-Gonzalez, Inaky
2005-05-07 7:25 ` Oleg Nesterov
2005-05-09 7:30 ` Ingo Molnar
2005-05-09 8:08 ` Oleg Nesterov
2005-05-09 9:11 ` Ingo Molnar
2005-05-09 14:32 ` Oleg Nesterov
2005-05-09 18:13 ` Daniel Walker
2005-05-09 19:21 ` Steven Rostedt
2005-05-09 21:29 ` Daniel Walker
2005-05-09 22:15 ` Daniel Walker
2005-05-09 14:07 ` Daniel Walker
2005-05-06 9:05 Oleg Nesterov
2005-05-06 11:13 ` Oleg Nesterov
2005-05-06 18:56 ` Daniel Walker
2005-04-12 0:36 Perez-Gonzalez, Inaky
2005-04-11 23:28 Perez-Gonzalez, Inaky
2005-04-12 0:27 ` Bill Huey
2005-04-11 22:31 Perez-Gonzalez, Inaky
2005-04-11 23:11 ` Bill Huey
2005-04-11 9:03 Perez-Gonzalez, Inaky
2005-04-11 8:49 Perez-Gonzalez, Inaky
2005-04-11 8:57 ` Ingo Molnar
2005-04-11 22:17 ` Bill Huey
2005-04-12 20:35 ` Esben Nielsen
2005-04-08 23:05 Perez-Gonzalez, Inaky
2005-04-08 21:25 Perez-Gonzalez, Inaky
2005-04-08 22:53 ` Daniel Walker
2005-04-07 17:52 Daniel Walker
2005-04-08 6:28 ` Ingo Molnar
2005-04-08 8:05 ` Sven-Thorsten Dietrich
2005-04-10 11:09 ` Ingo Molnar
2005-04-12 17:56 ` Daniel Walker
2005-04-08 17:11 ` Daniel Walker
2005-04-10 10:53 ` Ingo Molnar
2005-04-11 16:19 ` Daniel Walker
2005-04-12 18:37 ` Paul E. McKenney
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