Re: Kernel freeze during ftrace startup test (x86)

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Am 18.10.2010 16:54, Felix Jirka wrote:
> Ok, thanks for your help!
> 
> I'm sorry for sending this issue to the wrong list, I'm quite new to
> this and my thought was that is the correct list as the issue was
> happening with a vanilla kernel too.
> 
> Just to summarize:
> - on real HW with rtai-patch the issue is caused by rtai
> - the vanilla kernel used with vmware has some other issues

I missed the vanilla part: Can you reproduce under QEMU/KVM? Debugging
the guest would be easier then, and it's easier to trace what that
hypervisor does. Maybe there is a subtle race in the test code that is
exposed by the timing that virtualization implies.

> 
> so the conclusion is that I avoid the use of function tracing for now.
> 
> Regards
> 
> Felix
> 
> PS: what list would have been the right one for this issue?

RTAI patch variant -> RTAI mailing list. Official Adeos patch -> Adeos
mailing list.

Jan

-- 
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
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