Re: [Xenomai] RaspberryPi kernel 3.8 issue

[Gregory Dymarek <gregd72002@gmail.com>]

Here we go: http://pastebin.com/aDskYjnU

so line 47 is the call handle_irq_event_percpu
looking up of it there is one call to ipipe_unstall_root

I guess some more domain knowledge is needed in here than mine...

What does this tell us?


On 25 February 2014 20:25, Gilles Chanteperdrix <
gilles.chanteperdrix@xenomai.org> wrote:

> On 02/25/2014 09:21 PM, Gregory Dymarek wrote:
> > I should have added more context.
> >
> > I'm sure I recompiled the kernel correctly with CONFIG_IPIPE_TRACE
> > Because, when I unplug my USB device i get the ipipe trace now instead of
> > default kernel panic.
> >
> > Adding ipipe_trace_freeze to irq/handle.c:146 does not seem to trigger
> the
> > trace. Even if I define it in the main code block (without if statement)
> > this prints nothing. Could this be that a early printk is needed or some
> > other similar ipipe respective routine?
>
> The tracer only dumps the trace in case of panic, because in case of
> panic, there is no way to dump the trace. But in the usual case, the
> frozen trace can be dumped (preferably to a file) with
>
> cat /proc/ipipe/frozen
>
> >
> > Is there another way of tracing the issue down?
>
> Really, the tracer is probably the best tool for the job.
>
>
> --
>                                                                 Gilles.
>