Messages in this thread | | | Subject | Re: RT : nvidia driver and perhaps others | From | Valdis.Kletnieks@vt ... | Date | Wed, 15 Jun 2005 08:40:23 -0400 |
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On Wed, 15 Jun 2005 10:21:45 +0200, Serge Noiraud said:
> I try to compile the nvidia driver for my RT kernel. > It does not work anymore.
You aren't going to get much sympathy here on that one...:)
> Isn't there a better way to avoid these modifications ? > for example to have the external fonction the same than non RT kernel. > and have an internal link to the new one or something like that ?
However, he *does* have a point here - GPL'ed out-of-tree drivers will have these same issues. Yes, I know the standard "get them into the tree" refrain here...
> These drivers are proprietary, so I can't modify them.
Fortunately, NVidia supplies enough pieces to make things work..
> I think we should change : > > 1 - local_irq_* to raw_local_irq_* : is it always true ?
> 2 - spin_* to raw_spin_* ?
Ingo et al - what *is* the recommended magic to make a driver compile and work cleanly with or without RT? Hopefully there's a simple "will work correctly, but possibly sub-optimal latency" cookbook scheme....
> and other in two files ... too many modifications.
The C preprocessor is your friend - we *should* be able to make a change in one .h like '#ifdef SOME_RT_FLAG .. #else ... #endif' to do most of the work...
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