From: Steven Rostedt <rostedt@goodmis.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Gene Heskett <gene.heskett@verizon.net>,
LKML <linux-kernel@vger.kernel.org>, "K.R. Foley" <kr@cybsft.com>,
Lee Revell <rlrevell@joe-job.com>,
Rui Nuno Capela <rncbc@rncbc.org>
Subject: Re: [patch] Real-Time Preemption, -RT-2.6.12-rc1-V0.7.43-00
Date: Mon, 04 Apr 2005 17:14:56 -0400 [thread overview]
Message-ID: <1112649296.5147.21.camel@localhost.localdomain> (raw)
In-Reply-To: <20050404204725.GA17818@elte.hu>
On Mon, 2005-04-04 at 22:47 +0200, Ingo Molnar wrote:
> > Currently my fix is in yield to lower the priority of the task calling
> > yield and raise it after the schedule. This is NOT a proper fix. It's
> > just a hack so I can get by it and test other parts.
>
> yeah, yield() is a quite RT-incompatible concept, which could livelock
> an upstream kernel just as much - if the task in question is SCHED_FIFO.
> Almost all yield() uses should be eliminated from the upstream kernel,
> step by step.
Now the question is, who will fix it? Preferably the maintainers, but I
don't know how much of a priority this is to them. I don't have the time
now to look at this and understand enough about the code to be able to
make a proper fix, and I'm sure you have other things to do too.
-- Steve
next prev parent reply other threads:[~2005-04-04 21:34 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-25 14:59 [patch] Real-Time Preemption, -RT-2.6.12-rc1-V0.7.41-10 Ingo Molnar
2005-03-25 22:33 ` Lee Revell
2005-03-25 22:39 ` Ingo Molnar
2005-03-26 5:14 ` Lee Revell
2005-03-27 8:58 ` Ingo Molnar
2005-03-30 5:16 ` Lee Revell
2005-03-30 6:54 ` Ingo Molnar
2005-03-29 22:31 ` Lee Revell
2005-03-30 8:03 ` Ingo Molnar
2005-03-31 8:55 ` [patch] Real-Time Preemption, -RT-2.6.12-rc1-V0.7.41-25 Ingo Molnar
2005-04-01 10:47 ` [patch] Real-Time Preemption, -RT-2.6.12-rc1-V0.7.43-00 Ingo Molnar
2005-04-01 12:13 ` Rui Nuno Capela
2005-04-01 12:52 ` Ingo Molnar
2005-04-01 14:42 ` Rui Nuno Capela
2005-04-01 15:06 ` Ingo Molnar
2005-04-01 15:52 ` Rui Nuno Capela
2005-04-01 16:28 ` Ingo Molnar
2005-04-01 21:26 ` Rui Nuno Capela
2005-04-01 17:31 ` Gene Heskett
2005-04-01 18:27 ` K.R. Foley
2005-04-01 18:29 ` Ingo Molnar
2005-04-01 19:21 ` Gene Heskett
2005-04-01 19:19 ` Gene Heskett
2005-04-01 19:22 ` K.R. Foley
2005-04-01 23:34 ` Gene Heskett
2005-04-02 1:45 ` Lee Revell
2005-04-02 2:30 ` Gene Heskett
2005-04-02 5:12 ` Ingo Molnar
2005-04-02 19:37 ` Steven Rostedt
2005-04-02 20:06 ` Steven Rostedt
2005-04-02 20:17 ` Lee Revell
2005-04-02 20:34 ` Ingo Molnar
2005-04-02 22:38 ` Gene Heskett
2005-04-02 20:35 ` Ingo Molnar
2005-04-02 20:44 ` Steven Rostedt
2005-04-02 22:09 ` Steven Rostedt
2005-04-03 0:06 ` Steven Rostedt
2005-04-04 20:00 ` Ingo Molnar
2005-04-04 20:40 ` Steven Rostedt
2005-04-04 20:47 ` Ingo Molnar
2005-04-04 21:14 ` Steven Rostedt [this message]
2005-04-04 22:51 ` Zwane Mwaikambo
2005-04-04 22:59 ` Steven Rostedt
2005-04-04 23:09 ` Esben Nielsen
2005-04-05 7:57 ` Zwane Mwaikambo
2005-04-05 15:18 ` Mike Galbraith
2005-04-04 23:06 ` Esben Nielsen
2005-04-05 5:34 ` Ingo Molnar
2005-04-05 9:25 ` Esben Nielsen
2005-04-02 23:45 ` Lee Revell
2005-04-02 20:10 ` Lee Revell
2005-04-05 7:19 ` [patch] Real-Time Preemption, -RT-2.6.12-rc2-V0.7.44-00 Ingo Molnar
2005-04-05 19:06 ` Rui Nuno Capela
2005-04-05 19:36 ` Steven Rostedt
2005-04-08 15:22 ` Rui Nuno Capela
2005-04-08 17:15 ` Lee Revell
2005-04-08 20:15 ` K.R. Foley
2005-04-08 20:17 ` Lee Revell
2005-04-08 20:26 ` K.R. Foley
2005-04-08 21:00 ` Lee Revell
2005-04-08 21:36 ` K.R. Foley
2005-04-10 17:23 ` K.R. Foley
2005-04-10 17:27 ` Ingo Molnar
2005-04-10 17:39 ` Steven Rostedt
2005-04-10 17:47 ` Ingo Molnar
2005-04-12 18:17 ` Lee Revell
2005-04-21 7:35 ` [patch] Real-Time Preemption, -RT-2.6.12-rc3-V0.7.46-00 Ingo Molnar
2005-04-21 8:45 ` Paolo Ciarrocchi
2005-04-21 16:16 ` Daniel Walker
2005-04-21 19:54 ` Daniel Walker
2005-04-22 6:27 ` [patch] Real-Time Preemption, -RT-2.6.12-rc3-V0.7.46-01 Ingo Molnar
2005-04-22 7:34 ` Ingo Molnar
2005-04-22 15:48 ` Daniel Walker
2005-04-22 15:49 ` Ingo Molnar
2005-04-22 15:53 ` Daniel Walker
2005-04-22 15:55 ` Ingo Molnar
2005-04-22 15:56 ` Ingo Molnar
2005-04-26 17:49 ` Daniel Walker
2005-05-09 7:23 ` Ingo Molnar
2005-04-22 21:06 ` Inaky Perez-Gonzalez
2005-04-22 21:15 ` Daniel Walker
2005-05-04 8:24 ` Ingo Molnar
2005-04-22 21:17 ` Daniel Walker
2005-04-30 23:28 ` Lee Revell
2005-05-04 8:22 ` Ingo Molnar
2005-05-04 15:05 ` Lee Revell
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