From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <5436665A.4000905@xenomai.org>
Date: Thu, 09 Oct 2014 12:41:30 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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References: <542EA6A2.306@xenomai.org>	<CACreCVKe_nw=6p1xQkbziPne4cW74kx0EtUWG0kC4roS7+w+yw@mail.gmail.com>	<20141003191454.GF9452@sisyphus.hd.free.fr>	<CACreCVLi=QT72p0pca76_7tsJn+TazdQjyy7NHW_NwfxCYbuKA@mail.gmail.com>	<20141003224829.GA6850@sisyphus.hd.free.fr>	<CACreCV+TDzXxX=e7MpscYcGn1sTTye9N-mED0iPfqVB9Zm4xdQ@mail.gmail.com>	<20141004113116.GC7596@sisyphus.hd.free.fr>	<CACreCV+ok_Ogd3iFPGNS3n640hdLQC3C_Pyzz=w80St-7buXWQ@mail.gmail.com>	<20141005220404.GL14975@sisyphus.hd.free.fr>	<CACreCVJFa6FB=3WR_OuMvACeYOWaA035T4KK7dFg8vHhyqkz8w@mail.gmail.com>	<20141005223051.GN14975@sisyphus.hd.free.fr>	<CACreCVLQsaq01vsNA_V_bu9_NyMCTwZTiZJo2sFXJHgaaVjQVg@mail.gmail.com>	<54365E17.3020102@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 12:16 PM, Gilles Chanteperdrix wrote:
> 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).

I meant I am not sure I tested xeno-regression with CONFIG_PREEMPT.


-- 
                                                                Gilles.