[ltt-dev] UST: PowerPC 32 port of now in git

Mathieu Desnoyers compudj at krystal.dyndns.org
Tue Apr 20 14:56:14 EDT 2010


* Pierre-Marc Fournier (pierre-marc.fournier at polymtl.ca) wrote:
> Mathieu Desnoyers wrote:
>> * Pierre-Marc Fournier (pierre-marc.fournier at polymtl.ca) wrote:
>>> Hi,
>>>
>>> This is to let you know that the UST in the git repository now 
>>> supports  the PowerPC 32 architecture.
>>>
>>> http://git.dorsal.polymtl.ca/?p=ust.git;a=summary
>>>
>>> Testing is welcome.
>>>
>>> This will be in the next release.
>>
>> This port seems to rely on do_gettimeofday. Any plan to add ppc tb
>> register-based trace clock ?
>>
>
> Hi Mathieu,
>
> I did some tests. On my ppc32 system, this counter wraps in about 2  
> minutes. Will LTTV tolerate well a wrapping time base?
>
> Should the heartbeat be used here?

Can you point me to your tb read primitives implementation ?
(trace_clock_read64)

Thanks,

Mathieu


>
> pmf
>

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com




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