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

[Josh Boyer]

On Tue, Apr 20, 2010 at 02:45:36PM -0400, Pierre-Marc Fournier 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?

ppc32 timebase is two separate registers, timebase upper and lower.  I could
certainly see the lower register (lower 32 bits) wrapping in about 2 min, but
the upper should continue on.

josh