Re: [Xenomai-help] Sychronize between Linux and Xenomai domain

[Jan Kiszka <jan.kiszka@domain.hid>]

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Li Yi (Adam) wrote:
> Hi Jan,
> 
> You mentioned that:
> 
> "You might prevent rescheduling by
> setting the scheduler lock of Xenomai, but this still doesn't protect
> from IRQs."
> 
> If I don't want to stop Xenomai domain from receiving interrupt at all,
> Just want to block certain Xenomai task.

Then take care of this in the IRQ handler: if some task shall not
receive any notification, do not deliver. Or disable the specific IRQ
(rtdm_irq_disable) as long as it is not shared and no other tasks are
waiting for it.

> Is there a specific set of functions/macros which disable/enable specific
> real-time event
> processing (for instance, real-time task execution).  In this scheme,
> the ADEOS scheduler still executes, but now checks whether a real-time

Adeos has no scheduler, it only maintains the IRQ/event pipepline.

> task has been "blocked" for execution.  If it is blocked, the scheduler
> does not schedule the task. When the real-time task is "unblocked" by
> the Linux ROOT domain, it resumes real-time execution.

rt_task_suspend/resume of the native skin may help you. But, of course,
this will not prevent the IRQ handler from being executed. And there are
likely other ways, but this depends on your application design which I
don't know. In any case, nothing RT-specific here.

Jan


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