From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <5436607B.7090609@xenomai.org>
Date: Thu, 09 Oct 2014 12:16:27 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] Switchtest failures on ODROIDU3
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To: GP Orcullo <kinsamanka@gmail.com>
Cc: Xenomai <xenomai@xenomai.org>

On 10/09/2014 12:12 PM, GP Orcullo wrote:
> On Thu, Oct 9, 2014 at 6:06 PM, Gilles Chanteperdrix
> <gilles.chanteperdrix@xenomai.org> wrote:
>> On 10/09/2014 12:02 PM, GP Orcullo wrote:
>>> On Mon, Oct 6, 2014 at 6:30 AM, Gilles Chanteperdrix
>>> <gilles.chanteperdrix@xenomai.org> wrote:
>>>>
>>>> It means that Linux was interrupted by Xenomai during its timer
>>>> interrupt, and that Xenomai interrupted it for 280us. This may
>>>> happens with switchtest if it has a really long chain of context
>>>> switches. If you want to check what happened, enable the I-pipe
>>>> tracer, and trigger a trace freeze right before this message.
>>>>
>>>> --
>>>>                                             Gilles.
>>>
>>> One more piece to the puzzle: disabling CONFIG_IPIPE_DEBUG_INTERNAL
>>> causes the system to lockup.
>>>
>> How do you know this is related?
>>
>> --
>>                                                                 Gilles.
> 
> Sorry, I quoted the wrong message.
> 
> If CONFIG_PREEMPT is disabled and CONFIG_IPIPE_DEBUG_INTERNAL is not
> disabled, the system works fine.
> 
So, there is a problem, likely in your port with CONFIG_PREEMPT, but
maybe in Xenomai (I need to check, because I am not so sure I tested
xeno-regression-test without CONFIG_PREEMPT).

And there is a problem in your port without CONFIG_IPIPE_DEBUG_INTERNAL.
This I do not need to check, I have tested Xenomai wihout this option
enabled.

So, my question is: how do you know the two issues are related?

-- 
                                                                Gilles.