Re: Re: [Rtlinuxgpl] Interrupt Prioritization

>
> The design I recommend in RTLinux is to make the ISR very short and have it
> pass the time consuming part to a thread. For example, the ISR can post
> to a semphore and a thread can fill the sound driver buffer.
> Does that work for your application?
>

Hi Victor,

I tried the above design that you recommend.  It turns out that in rtlinux 
free 3.2 sem_post() calls rtl_schedule, and as a result, my ISR 'worker' 
thread (bottom half) ends up running right inside my ISR top half!

The result is equivalent to if I would have just not even bothered and 
done everything in a big fat ISR.

What gives?

How can I post to a semaphore and/or wakeup an rtlinux pthread *without* 
yielding the current thread of execution?!?

-Calin

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