[ECOS] DSR and kernel mechanisms

Jonathan Larmour jlarmour@redhat.com
Fri Nov 30 16:48:00 GMT 2001


Rafael Rodríguez Velilla wrote:
> 
>    I think I've read in this list before that there are some limitations
> in the kernel facilities that can be accessed from a DSR.
> 
>   Which is this limitation?
> 
>   I suppose that all facilities that use a timer are not well handled in
> DSRs (the scheduler is locked and it won't produce a reschedule). Any
> other limitation?

Yes, don't use anything which will (or therefore, can) block. Don't use
anything that you want done in the context of a particular thread.

Jifl
-- 
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