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Updated realtime-preempt documentation
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m...@unre.st  
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 More options Apr 30 2005, 1:39 am
Newsgroups: fa.linux.kernel
From: <m...@unre.st>
Date: Sat, 30 Apr 2005 05:39:19 UTC
Local: Sat, Apr 30 2005 1:39 am
Subject: Updated realtime-preempt documentation
Hey all,

 I've been following Ingo Molnar and friends' lovely realtime-preempt
patchset.  I'm curious, though, the only piece of documentation I've
found is
http://people.redhat.com/mingo/realtime-preempt/older/ANNOUNCE-volunt...
 which is, indeed, quite old.   Is anyone planning on updating this in
the near future or is it in too much flux? Should I try and make heads or
tails of the code first?

-
Michael

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Lee Revell  
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 More options Apr 30 2005, 2:14 am
Newsgroups: fa.linux.kernel
From: Lee Revell <rlrev...@joe-job.com>
Date: Sat, 30 Apr 2005 06:14:26 UTC
Local: Sat, Apr 30 2005 2:14 am
Subject: Re: Updated realtime-preempt documentation

On Sat, 2005-04-30 at 01:37 -0400, m...@unre.st wrote:
> Hey all,

>  I've been following Ingo Molnar and friends' lovely realtime-preempt
> patchset.  I'm curious, though, the only piece of documentation I've
> found is
> http://people.redhat.com/mingo/realtime-preempt/older/ANNOUNCE-volunt...
>  which is, indeed, quite old.   Is anyone planning on updating this in
> the near future or is it in too much flux? Should I try and make heads or
> tails of the code first?

I think it's changing too fast for anyone to have bothered to document
it yet.

But, you could make some pretty good documentation based on the LKML
discussions of RT preemption, especially Ingo's posts.

Lee

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Daniel Walker  
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 More options Apr 30 2005, 10:26 am
Newsgroups: fa.linux.kernel
From: Daniel Walker <dwal...@mvista.com>
Date: Sat, 30 Apr 2005 14:26:04 UTC
Local: Sat, Apr 30 2005 10:26 am
Subject: Re: Updated realtime-preempt documentation
On Sat, 30 Apr 2005 m...@unre.st wrote:

> Hey all,

>  I've been following Ingo Molnar and friends' lovely realtime-preempt
> patchset.  I'm curious, though, the only piece of documentation I've
> found is
> http://people.redhat.com/mingo/realtime-preempt/older/ANNOUNCE-volunt...
>  which is, indeed, quite old.   Is anyone planning on updating this in
> the near future or is it in too much flux? Should I try and make heads or
> tails of the code first?

No free documentation exists that I know of. It would be nice if someone
wrote some..

What would you like to know?

Daniel

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Daniel Walker  
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 More options Apr 30 2005, 10:29 am
Newsgroups: fa.linux.kernel
From: Daniel Walker <dwal...@mvista.com>
Date: Sat, 30 Apr 2005 14:29:57 UTC
Local: Sat, Apr 30 2005 10:29 am
Subject: Re: Updated realtime-preempt documentation

On Sat, 30 Apr 2005, Lee Revell wrote:

> I think it's changing too fast for anyone to have bothered to document
> it yet.

That's true for some of it, but like interrupts in threads hasn't changed
in a few months .. The config options aren't likely to change ..

> But, you could make some pretty good documentation based on the LKML
> discussions of RT preemption, especially Ingo's posts.

That would be a chore ..

Daniel

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john cooper  
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 More options Apr 30 2005, 11:41 am
Newsgroups: fa.linux.kernel
From: john cooper <john.coo...@timesys.com>
Date: Sat, 30 Apr 2005 15:41:39 UTC
Local: Sat, Apr 30 2005 11:41 am
Subject: Re: Updated realtime-preempt documentation

m...@unre.st wrote:
> Hey all,

>  I've been following Ingo Molnar and friends' lovely realtime-preempt
> patchset.  I'm curious, though, the only piece of documentation I've
> found is
> http://people.redhat.com/mingo/realtime-preempt/older/ANNOUNCE-volunt...
>  which is, indeed, quite old.   Is anyone planning on updating this in
> the near future or is it in too much flux? Should I try and make heads or
> tails of the code first?

I'd cobbled together documentation for internal use here
though it lacks an "overall concepts" wrapper.  I should
be revisiting this in a week or so and will look into
making it generally available.

-john

--
john.coo...@timesys.com
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Lee Revell  
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 More options Apr 30 2005, 2:19 pm
Newsgroups: fa.linux.kernel
From: Lee Revell <rlrev...@joe-job.com>
Date: Sat, 30 Apr 2005 18:19:11 UTC
Local: Sat, Apr 30 2005 2:19 pm
Subject: Re: Updated realtime-preempt documentation

On Sat, 2005-04-30 at 07:28 -0700, Daniel Walker wrote:
> On Sat, 30 Apr 2005, Lee Revell wrote:

> > I think it's changing too fast for anyone to have bothered to document
> > it yet.

> That's true for some of it, but like interrupts in threads hasn't changed
> in a few months .. The config options aren't likely to change ..

Right now there's this:

http://www.affenbande.org/~tapas/wiki/index.php?Low%20latency%20for%
20audio%20work%20on%20linux%202.6.x

It's slightly outdated and focuses only on using the RT kernel for low
latency audio with JACK, but I think it's the best user level doc so
far.

Lee

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Jonathan Corbet  
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 More options Apr 30 2005, 4:40 pm
Newsgroups: fa.linux.kernel
From: cor...@lwn.net (Jonathan Corbet)
Date: Sat, 30 Apr 2005 20:40:35 UTC
Local: Sat, Apr 30 2005 4:40 pm
Subject: Re: Updated realtime-preempt documentation

>  I've been following Ingo Molnar and friends' lovely realtime-preempt
> patchset.  I'm curious, though, the only piece of documentation I've
> found is
> http://people.redhat.com/mingo/realtime-preempt/older/ANNOUNCE-volunt...
>  which is, indeed, quite old.   Is anyone planning on updating this in
> the near future or is it in too much flux?

Don't know if it's what you're after, but I've written some on the
realtime preemption patches:

        http://lwn.net/Articles/106010/
        http://lwn.net/Articles/107269/
        http://lwn.net/Articles/108216/
        http://lwn.net/Articles/129511/

jon
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