Re: hrtimer problem on AT91RM9200

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Adding RT-mailing list..

2009/8/24 Vivek Satpute <vivek@xxxxxxxxxxxxxx>:
> Hi Bo,
>
> 2009/8/21 Bo Hansen <bh@xxxxxxxxx>
>>
>> Hi Uwe,
>>
>> I cannot find anything in the dmesg or serial output regarding the
>> WARN_ON_ONCE(...)
>> I guess the WARN_ON_ONCE(...) should show up in dmesg output?
>
> I am not sure that it is directly shown up in dmesg output, but you can
> add printks to verify whether WARN_ON_ONCE() code path hits or not.
>>
>> What puzzles me is that I tried the CONFIG_DEBUG_BUGVERBOSE=y
>> also when I enabled CONFIG_DEBUG_INFO. When I do
>> this I don't get the kernel panic. Is this somehow related to the
>> WARN_ON_ONCE?
>
> I have encountered this scenario. If there is any race condition in code
> then it might get suppressed when debugging options are enabled and
> kernel does not panic.
>>
>> Attachments only sent to Uwe - anybody are welcome to get a copy.
>>
>> Best regards,
>> Bo
>
> Thanks,
> Vivek Satpute
>>
>>
>> Uwe Kleine-König wrote:
>>>
>>> Hello,
>>>
>>>
>>>>
>>>> PC is at clkevt32k_next_event+0x70/0xac
>>>>
>>>
>>> This function has a WARN_ON_ONCE(...).  Can you check if this triggers?
>>>
>>> Can you provide me a kernel image with CONFIG_DEBUG_INFO=y and a
>>> matching oops?
>>>
>>> Best regards
>>> Uwe
>>>
>>>
>>
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>
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