[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.3-181-g653e6a9

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- Log -----------------------------------------------------------------
commit 653e6a9a860d2cdf71a3be5eb0ec91c3606a7f58
Author: Josh Stone <jistone@redhat.com>
Date:   Mon Oct 4 17:56:26 2010 -0700

    PR11739: Add an STP_ALIBI flag
    
    Primarily just for testing purposes, define STP_ALIBI to shortcut all
    probe handlers, so they're nothing but an atomic_inc.  It prints a hit
    report similar to STP_TIMING at the end.
    
    Note that any logic that would have called exit() will also be blocked,
    so you need other ways to end the script: SIGINT, finished -c, etc.
    
    * tapsets.cxx (common_probe_entryfn_prologue): #ifdef STP_ALIBI, reduce
      the probe handler to just an atomic_inc().
      (common_probe_entryfn_epilogue): Close the #ifdef from above.
    * translate.cxx (translate_pass): Add an atomic_t to stap_probe for
      STP_ALIBI to track probe hits.
      (c_unparser::emit_module_exit): Print alibi hit-report.

-----------------------------------------------------------------------

Summary of changes:
 tapsets.cxx   |    6 ++++++
 translate.cxx |   25 +++++++++++++++++++++----
 2 files changed, 27 insertions(+), 4 deletions(-)


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systemtap: system-wide probe/trace tool