Preemptive Kernel and MPC8xx ???

Jaap-Jan Boor jjboor at aimsys.nl
Thu Nov 27 03:19:24 EST 2003


On Tue, 2003-11-25 at 09:13, Steven Scholz wrote:
> Hi,
>
> > On Mon, 24 Nov 2003, Jaap-Jan Boor wrote:
> >
> >>Yes I do on 2.4.20 and 2.4.22 from kernel.org. So far all seems
> >>to work but didn't do any measurements on it.
> >>(I both use the preempt and low-latency patches)
> Have you writting your own device drivers?
> How did you make them preemptable?

I didn't... I still assume the kernel will lock
e.g. the same SIU irq

>
> Marius Groeger wrote:
> > AFAIK, you can pretty much drop the low-latency patch in favor of
> > using the lock-breaking patch. It is also available from Robert Love
> > at the cited home page.
> How about homemade device drivers when using the lock-breaking patch?
>
> Thanks!
>
> --
> Steven Scholz
>
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