Jan Kiszka wrote:
> RAKOTOSALAMA, Nirilanto wrote:
>
>>Hi,
>>
>>I'm still blocked on a CPU affinity problem.
>>In order to adapt a set affinity function which is based on
>>posix linux lib :
>>- CPU_AssignPID(uint32 PID, uint32 CPU_id)
>>- the cpu affinity of the caller and all its child threads must be set to
>>CPU_id.
>>
>>Problems are:
>>Child PIDs must be listed, the only means I found is listing pids using `ls
>>/proc/"Parent pid"/ > temp_file`
>>And each listed pid is sched_setaffinity'ed.
>>I don't know if setting affinity of RT threads from an other thread (parent)
>>using pid works with xenomai.
>
>
> It works in so far as the Xenomai thread will not change its CPU until
> it enters secondary mode. Moreover, there is no explicit "hey, RT thread
> x, go to CPU #n!" under the POSIX skin. Migration always go through
> secondary mode.
Let's repeat it, rephrased, once again: what works with Linux regarding
CPU affinity also works with Xenomai.
--
Gilles Chanteperdrix
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