Re: [Xenomai-help] Interrupt priorities and handling problems

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

Bosko Radivojevic wrote:
 > > Interrupt priority only matters when two interrupts are pending at the
 > > same time. If ethernet interrupt is treated at Linux level, then it is
 > > fully preemptible by Xenomai,
 > 
 > Ethernet is handled by Linux (dm9000 driver).

Then what I have said is irrelevant, your interrupt handler is fully
preemptible by Xenomai.

 > 
 > > - re-enable interrupts in the ethernet interrupt handler
 > 
 > What will happen with interrupted ethernet interrupt handler? :)
 > 
 > > But as far as I understood, your problem is not the interrupt latency,
 > > but rather the ISR duration, and changing the interrupt priority will
 > > not change this at all.
 > 
 > Both latency and duration are my problems. But, I had some explanation
 > for latency problem (irqs disabled during Eth handler).

How are they disabled ? If they are disabled using Linux functions, then
they are really enabled for Adeos, that is one of the intended effects
of the Adeos patch.

-- 


					    Gilles.