uprobe test scripts

[Wenji Huang]

Hi,

    Based on srikar's framework, I made some tests on uprobes.

    Detailed contents(according to 
http://sourceware.org/systemtap/wiki/UprobesTestScenarios):       
      
    ***"Register/unregister the same probepoint multiple times with each 
probe using a different handler."
         ---probemul+probeme4
    ***"Register/unregister a/multiple probe(s) on a function(s) to be 
called by several threads of a multithreaded process but after the 
threads are created. "
          ---probemul+probe7-thread
    ***"Register/unregister one or more probe points on functions 
defined in shared libraries called by several threads of a multithreaded 
process."
         ---probemul+probe8-thread
    ***"Test module probes multiple processes. Probes are [un]registered 
by the module init function and/or handlers."
         ---probemulproc+probemp
    ***"Register once and trying to unregister multiple times."
         ---probeunregister+probeme4
    ***"Registering / unregistering a invalid probe point."
         ---probeinvalid+probeme4
    ***"Registering an already existing probe should return an error." 
(Updated uprobe with jim's patch)
         ---probesame+probeme4

   The above 7 scenarios passed in the machine(2.6.21, i686). Please 
kindly review it.

   Any questions or comments are welcome!

   Fresh in uprobe/utrace ^-^

Best regards,
Wenji

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