Subject: Re: Next April 24: [S390] allmodconfig build failure (trace/events)

From: Sachin Sant <[email-masked]>
Date: Wed, 29 Apr 2009 15:21:39 +0530

Heiko Carstens wrote:
> On Fri, 24 Apr 2009 09:25:33 +0200
> Ingo Molnar <[email-masked]> wrote:
>
>   
>> * Sachin Sant <[email-masked]> wrote:
>>
>>     
>>> Today's next tree build(s390 allmodconfig) failed with
>>>
>>> kernel/built-in.o: In function `trace_softirq_entry'
>>> include/trace/events/irq.h:42: undefined reference to  
>>> `'
>>> include/trace/events/irq.h:42: undefined reference to  
>>> `__tracepoint_softirq_entry'
>>> kernel/built-in.o: In function `trace_softirq_exit':
>>> include/trace/events/irq.h:48: undefined reference to  
>>> `__tracepoint_softirq_exit'
>>> include/trace/events/irq.h:48: undefined reference to  
>>> `__tracepoint_softirq_exit'
>>>       
>> Hm, that's weird - s390 does not build kernel/softirq.o? Hm, it does 
>> - softirq.o is an obj-y object.
>>     
>
> s390 does build kernel/softirq.o. However it's anything but obvious to
> me how the tracepoint infrastructure works. Too many #ifdefs, #define's
> and #undefine's...
>
> I would expect that struct __tracepoint_softirq_entry somehow gets
> defined via one of the TRACE_FORMAT macros, no?
Today's next tree also has this failure. Any solution for this problem ?

Thanks
-Sachin

-- 

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Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India
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