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Date: Sun, 06 Apr 2014 22:54:11 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] Command line freeze during xeno-regression-test on
 omap4460
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To: Andreas Glatz <andi.glatz@gmail.com>
Cc: xenomai@xenomai.org

On 04/06/2014 06:02 PM, Andreas Glatz wrote:
> 
> On 6 Apr 2014, at 16:54, Gilles Chanteperdrix wrote:
> 
>> On 04/06/2014 01:21 PM, Andreas Glatz wrote:
>>> First i mounted tmpfs on /tmp so I don't wear out the SD card too  
>>> much:
>>> mount -t tmpfs -osize=192M tmpfs /tmp
>>>
>>> Then I used the following line to start the test (substitute MYTEST
>>> below with the following line):
>>> /usr/lib/xenomai/testsuite/dohell -m /tmp -l /opt/ltp
>>>
>>> Note: I always monitored the test over wifi with 'top' so I also had
>>> some network load...
>>>
>>> I got the following results with the 3.10.34 kernel, which includes
>>> everything up to the current ipipe-3.10 tag (it also included the
>>> patch you mentioned):
>>>
>>> - xeno-regression-test "MYTEST" -> FAIL if booted from SD card (see
>>> description above); OK if booted from ext USB HD _AND_ no mmc
>>> partitions mounted
>>> - CONFIG_IPIPE && CONFIG_XENOMAI && MYTEST -> FAIL (got status LED 2
>>> constantly on as described above)
>>> - CONFIG_IPIPE && MYTEST -> OK (see attached config file and ltp test
>>> log)
>>
>> Of course, I assume you used the exact same kernel configuration, the
>> only difference being CONFIG_XENOMAI in the two cases, right?
> 
> Yes! I just went into menuconfig and disabled CONFIG_XENOMAI, rebuilt  
> it, installed it and rebooted. I'm now recompiling the kernel with the  
> last config I sent you and the changes I attached (i got all those  
> changes after enabling CONFIG_XENOMAI and your CONFIG_* changes with  
> make menuconfig). After everything is built, I'll install it and  
> repeat running 'MYTEST' without 'xeno-regression-test'.

Another interesting test would be to enable CONFIG_DETECT_HUNG_TASK.
With a little luck, we will find on what is blocked the kernel.

-- 
                                                                Gilles.