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List:       linux-rt
Subject:    Re: [rtl] Dual Processor RTLinux  ... patch URL correction
From:       Phil Wilshire <philwil () on-ramp ! ior ! com>
Date:       1999-08-26 17:14:21
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Hi all,
here's the patch and the name.

Again.
I should check these things before posting  sorry...


Phil Wilshire

David Olofson wrote:
> 
> Kirk Smith wrote:
> (...)
> > Two questions:
> >
> > 1 - Could rtlinux be modified to run soley on the second cpu?  This would let
> > the primary cpu run normal linux, and the second run all time critial apps?
> 
> *Anything* is possible! This is Open Source... :-)
> 
> Ove Ewerlid has been doing this without RTL, with good results. He has a
> kernel patch that simply blocks anything but SCHED_FIFO tasks from the
> second CPU. When a SCHED_FIFO task is started, it'll run on the second
> CPU, and can safely run continously, polling AD/DA cards or whatever,
> while Linux runs on the first CPU.
> 
>
Ove Ewerlid <Ove.Ewerlid@syscon.uu.se>

http://www.syscon.uu.se/~oe/linux/linux-2.3.9-cpu-lock-irq-stat.diff
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