[Xenomai] Make a block of code atomic

[Paolo Minazzi <Paolo.Minazzi@mitrol.it>]

Hi,

I would like to make a block of kernel code atomic, so that no one (both 
xenomai and Linux) can interrupt it.
I use the following :

#define my_local_irq_save(x)    ((x) = 
ipipe_test_and_stall_pipeline_head() & 1)
#define my_local_irq_restore(x) ipipe_restore_pipeline_head(x)

my_local_irq_save(flags);
< critical section >
my_local_irq_restore(flags);

It works well enough, but rarely an rtdm irq enter into my critical 
section.
The rtdm irq is registered in this way : rtdm_irq_request(&priv->irqHnd, 
ETH_PORT_IRQ_NUM(priv->port), irqHandler, RTDM_IRQTYPE_EDGE, "rtdm_eth", 
priv);

Is it normal ? Are you sure that it cannot happen ?

Thanks,
Paolo