Zdenek Kabelac wrote:
>
> Could you be more specific here ???
> What's the problem with RTL development ?
I don't think that going into specifics would help. This thread would
rapidly degenerate if we go down that path. Which __doesn't__ mean
that the facts aren't there. I've presented the general idea and those
implicated are aware of the meanings.
>
> I think everyone has the right to change its mind over the time and also
> when you
> invent something, it doesn't mean you are the only one how invented it.
> (thats why I don't understand US patents for one-click and many others)
>
You are right, it doesn't mean you are the only one who invented it.
But in the scientific community, there usually is something called
"previous work" and the basis of any serious study should state all
previous work and give credit to those projects. In the open-source
community (which is an extention of the scientific community), this
is fairly simple to do.
>
> I don't know about Paolo but my comments, problems, suggestions were
> always
> solved nicely.
I'm glad for you and whoever is on the other end isn't all bad and all
good, I'm just trying to point out facts that seem troubling.
>
> I still don't understand how RTAI could be called hard-real time when
> there are no kernel modification - CLI/STI are the enemies and I would
> like to know how they are handled in RTAI. What happens when
> SBLive driver calls spinlock_irq_safe ??
One of the main advantages of RTAI (but my understanding is that RTL
has included this now ... see what I mean) is that it doesn't take RT
control over from Linux right away. RTAI inserts generalized hooks
into Linux which are not used right away. These hooks end up calling
on the normal Linux functions as long as RTAI isn't installed. Once
installed, RTAI uses those hooks to take the control of the system.
Therefore, if SBLive calls on spinlock_irq_safe, it is caught by RTAI.
Meanwhile RTAI uses true locking facilities to further it's ends.
>
> file from RTL distribution: rlt/CREDITS
> ...
> Paolo Mantegazza <[EMAIL PROTECTED]>
> ...
>
> What's wrong with this - you want to know which lines come from Paolo
> ???
No, I don't want to know line by line what happens. I would like
it to be a matter of public knowledge that RTL takes some of it's
ideas from the competing RT project, as it is a fact of public knowledge
that Gnome and KDE have both been enriched by each's advantages. In
fact, had there been only one graphical environment, there would have
been no innovation. If this is true for RT, I do not know, but I do
think that recognition should be given to the project that first
introduces a feature or another. This cuts __both__ ways.
>
> --
> There are three types of people in the world:
> those who can count, and those who can't.
> Zdenek Kabelac http://i.am/kabi/ [EMAIL PROTECTED] {debian.org; fi.muni.cz}
--
===================================================
Karim Yaghmour
[EMAIL PROTECTED]
Operating System Consultant
(Linux kernel, real-time and distributed systems)
===================================================
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