Philippe Gerum wrote:
> Ignacio Garc~a P~rez wrote:
> > Hi,
> >
> > I'm quite new to xenomai (switching from RTAI). I noticed that the
> > latency_rt.ko module fails to start the timer if the posix skin module
> > (xeno_posix.ko) is loaded. Is this the expected behaviour?
> >
>
> Yes and no. There is a change pending in my tree that makes rt_time_start()
> a
> bit smarter, trying its best effort to check whether the requested setting
> fits
> any current one, in which case the call returns without error. In the case
> you
> mentioned, both timer setups at nucleus level asked for oneshot, so this
> should
> have been ok with this patch, instead of bailing out on error rather
> uselessly.
> The UVM skin already enforces this for instance. I have just committed it to
> the
> SVN repo.
The problem is that you also have to make the module_exit function
smarter and avoid to stop the system timer if another module is
running. This means adding a sort of reference counter to the system
timer.
--
Gilles Chanteperdrix.
