Steve Deiters wrote:
>> Periodically setting the time is risky if timed jobs depend 
>> on Xenomai's real-time clock - it may jump in all directions...
>>
>>> Any other suggestions for providing timestamps to real time 
>> tasks in 
>>> this case?
>> Do you just need precise timestamps from with real-time 
>> tasks, or do you have to synchronize timer events of the 
>> Xenomai core on an external clock?
>>
>> For the former case (precisely our scenario), we laid the 
>> ground to extend Xenomai 2.5 with RT-safe syscalls to obtain 
>> Linux's view on gettimeofday. It "just" needs some polishing 
>> to post this for upstream.
>> Wolfgang (CC'ed) is working on this.
> 
> I'm just looking to get timestamps in the real time task.  At least in
> my case being able to call gettimeofday from the real time thread would
> be exactly what I need.

then you might want to try the attached patches for Ipipe and
Xenomai. For upstream submission, they still need a bit of
cleaning up as Jan mentioned, and I'll also prepare a proper
series then. Testing is very welcome, however.

Best, Wolfgang