On 01/12/2012 04:58 PM, Jan-Erik Lange wrote:
> Hello,
> Does the Xenomai scheduler has to interact with the Linux sheduler in
> order to preempt the tasks which are managed by it? Or is the Xenomai
> scheduler repealing the whole linux scheduler when it wants to run a
> task and and linux is running a task?
> Best regards Jan

No, xenomai may preempt linux in the middle of almost anything, that is
the whole point of being based on the adeos patch. However, when a task
needs to change scheduler, the two schedulers have to cooperate. If you
are interested in the details, see xnshadow_relax and xnshadow_harden in
ksrc/nucleus/shadow.c in xenomai sources.


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