[Xenomai] Support of Beagleboard xm rev C on 3.14-ipipe

[Gilles Chanteperdrix]

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On 06/25/2014 10:11 AM, Arnaud Degroote wrote:
> On 24/Jun - 20:31, Gilles Chanteperdrix wrote:
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>> On 06/24/2014 02:21 PM, Arnaud Degroote wrote:
>>> On 24/Jun - 08:29, Gilles Chanteperdrix wrote:
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>>>> On 06/24/2014 08:23 AM, Arnaud Degroote wrote:
>>>>> On 24/Jun - 01:45, Gilles Chanteperdrix wrote:
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>>>>>> On 06/23/2014 01:18 PM, Arnaud Degroote wrote:
>>>>>>> On 23/Jun - 11:22, Gilles Chanteperdrix wrote:
>>>>>>>> On 06/23/2014 11:08 AM, Arnaud Degroote wrote:
>>>>>>>>> Hi list,
>>>>>>>>> 
>>>>>>>>> I'm trying to deploy a 3.14 kernel on my
>>>>>>>>> BeagleBoard XM rev C but got several issues. So,
>>>>>>>>> first question, it is supposed to be supported or
>>>>>>>>> am I somewhere in a grey zone ?
>>>>>>>>> 
>>>>>>>>> Let describe more precisely the configuration and
>>>>>>>>> the symptom. - linux-ipipe branch ipipe-3.14 -
>>>>>>>>> xenomai 2.6.3 + some patches from 2.6 branch
>>>>>>>>> (including d1d00e0acd29bb5f9023494a883a7fa0def40917
>>>>>>>>>  41cb1f73814d1094e0ea75ccbbd23ff01280787e 
>>>>>>>>> 7a48019268d7e1157ebb072b88f6683425f0c7c5 
>>>>>>>>> f00d22eca6277e780c19a5d5ecd2ed0e23dabafe )
>>>>>>>> 
>>>>>>>> It is supposed to work, could you try again with the 
>>>>>>>> xenomai 2.6 git?
>>>>>>>> 
>>>>>>> 
>>>>>>> Hi Gilles,
>>>>>>> 
>>>>>>> I just tested against 2.6-git and observe the same 
>>>>>>> behaviours.
>>>>>>> 
>>>>>>> Best regards,
>>>>>>> 
>>>>>> Could you post your configuration?
>>>>> 
>>>>> Sure, see the attached defconfig. It is basically yocto
>>>>> base arm kernel + xenomai (and some kernel hacking
>>>>> option).
>>>>> 
>>>>> 
>>>> Could you try to turn off CONFIG_NO_HZ ?
>>> 
>>> Without CONFIG_NO_HZ, it hangs repeatably during the boot (in
>>> the same place than with CONFIG_NO_HZ without
>>> CONFIG_DEBUG_LOCK_ALLOC, so this last option is more a timing
>>> workaround than a "real fix"). See the attached defconfig and
>>> boot log.
>> 
>> Do you have the same problem if you boot using NFS instead of an
>> SD card?
>> 
> 
> Using root on nfs does not seem to change the problem. It still
> hangs in the same place.

Ok, could you disable FTRACE, then enable the I-pipe debugs except the
I-pipe tracer? And enable all the xenomai debugs?


- -- 
                                                                Gilles.
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