On 02/04/2013 09:30 PM, Jan Kiszka wrote:
> On 2013-02-04 20:55, Gilles Chanteperdrix wrote:
>> On 02/04/2013 08:22 PM, raespi wrote:
>>
>>> Ok, I downloaded the 2.6.2.1 stable version now. Everything compiles
>>> without problems ... Still I get the same error when running *xeno-latency*:
>>>
>>> switchtest: Unable to open switchtest device.
>>> (modprobe xeno_switchtest ?)
>>>
>>> Any ideas .. ?
>>
>>
>> No, we do not have enough details. What toolchain do you use? What
>> arguments do you pass to configure? Did you recompile the kernel too?
>
> I remember stumbling over this issue recently as well, on x86. Hmm, I
> think it was not a missing device but failing
> RTTST_RTIOC_SWTEST_SET_TASKS_COUNT due to too few resources of the
> nucleus - but that was on 16 or even 32 CPU box.
It is true that any error in the ioctl will trigger this message,
whereas we should treat anything else than -ENOSYS as an error.
--
Gilles.
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