From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Drew <pythondrew@gmail.com>
Cc: "Xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] gdb / threads on beaglebone black
Date: Wed, 28 May 2014 22:06:53 +0200 [thread overview]
Message-ID: <538641DD.4030903@xenomai.org> (raw)
In-Reply-To: <CAO0fa7as++VjLsRckoZ5XQ1nsfSwMvu3CUmQJVyr0PLyWjNntg@mail.gmail.com>
On 05/28/2014 09:19 PM, Drew wrote:
> On Wed, May 28, 2014 at 1:54 PM, Gilles Chanteperdrix <
> gilles.chanteperdrix@xenomai.org> wrote:
>
>>
>> Is there no message printed on the kernel console which would explain
>> why this syscall gets rejected?
>>
>
> A good idea! Unfortunately, after hooking up my debug serial cable I don't
> see any message when this happens. Running tail -f /var/log/messages
> doesn't show anything suspicious either. (well, it did find some things I
> didn't clean up in my main application... ;-)
>
> Grepping around for sys_barrier I come up with ksrc/nucleus/shadow.c. Does
> that contain the kernel side of the do while loop? I notice that
> xnshadow_sys_trace (which seems debugger related to me..) defaults its
> error to -ENOSYS...
>
If you enable CONFIG_IPIPE_DEBUG_INTERNAL, do you see the following message:
[ 292.460803] kernel BUG at arch/arm/kernel/ipipe.c:445!
(the line number may be a bit different as I am testing Xenomai on Linux
3.14).
--
Gilles.
next prev parent reply other threads:[~2014-05-28 20:06 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-26 1:49 [Xenomai] gdb / threads on beaglebone black Drew
2014-05-26 7:09 ` Philippe Gerum
[not found] ` <CAO0fa7YQ0TxiAhbmFmt+41o+rugoLXKjXxtHygpthNOiu8gd9w@mail.gmail.com>
2014-05-26 13:23 ` Philippe Gerum
2014-05-27 12:05 ` Drew
2014-05-27 22:21 ` Drew
2014-05-28 14:08 ` Drew
2014-05-28 14:24 ` Philippe Gerum
2014-05-28 14:45 ` Michael Haberler
2014-05-28 17:54 ` Gilles Chanteperdrix
2014-05-28 19:19 ` Drew
2014-05-28 19:28 ` Philippe Gerum
2014-05-28 20:06 ` Gilles Chanteperdrix [this message]
2014-05-28 20:24 ` Gilles Chanteperdrix
2014-05-28 20:31 ` Michael Haberler
2014-05-28 20:36 ` Philippe Gerum
2014-05-28 21:01 ` Drew
2014-05-28 21:08 ` Gilles Chanteperdrix
2014-05-28 22:27 ` Gilles Chanteperdrix
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