[PATCH] itrace spin lock fix

[Dave Nomura]

Sorry, I forgot about that.  The probe used to fire  because Frank had 
to disable the test because it was crashing.  I'm not sure what has 
changed that is preventing the itrace probe from firing.  I experimented 
a bit and found that if I added a uprobe that didn't do anything related 
to the itrace probe, then the itrace probe would fire.  This is going to 
take further study.  Any ideas on what might have changed?

David Smith wrote:
> Dave Nomura wrote:
> I merged your patch in with mine and fixed the ChangeLog entry.
>
> Great, but...
>
>   
>>> With the above patch, systemtap could compile modules again.  The
>>> itrace.exp test script ran (with the early exit deleted), but failed
>>> because the itrace probes never got hit.
>>>       
>
> Shouldn't the itrace probes have been hit?
>
>