Re: [Xenomai] Xenomai on Linux 3.18 on Zynq

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

On Fri, Apr 10, 2015 at 06:06:47PM +0200, Andreas Galauner wrote:
> On 10.04.2015 17:29, Gilles Chanteperdrix wrote:
> > Maybe you already tried since you tried "all kinds of things", but
> > better be sure, have you tried enabling Xenomai and I-pipe debugging
> > options? 
> 
> Sorry for that sloppy phrase, it's a side project and I lost track what
> exactly I did over the last weekends.
> 
> I just enabled the I-pipe debugging features. I didn't know that they
> are under "Kernel hacking". The Xenomai debugging features were enabled
> all the time.
> 
> Sadly, I don't get any messages that may relate to my system behaviour.
> Actually no messages at all except the initialization messages of i-pipe
> and Xenomai.
> 
> What I forgot to mention is, that it's not a complete freeze. It seems
> to me, that the system just gets horribly slow. The heartbeat LED stops
> blinking and I get occasional terminal output (1-2 lines) until it stops
> completely.
> 
> There seem to be three points where the kernel may hang:
> 1) Somewhere in the driver init phase
> 2) While mounting the rootfs
> 3) At the login prompt or idle shell
> 
> And as I said, sometimes I get a few more lines from the kernel after a
> while.

The classical issues to check are irq issues and timer issues. Since
you are using a non mainline kernel (I guess), you may simply lack
some changes to the code added by your non mainline kernel. To fix
that, you can use the following document:

https://xenomai.org/2014/09/porting-xenomai-dual-kernel-to-a-new-arm-soc/

-- 
					    Gilles.