[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.1-49-g0d1ad60

[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.1-49-g0d1ad60

[wenji]

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- Log -----------------------------------------------------------------
commit 0d1ad607311857dc0b4666ce8a84c1a59c615ab9
Author: Wenji Huang <wenji.huang@oracle.com>
Date:   Wed Feb 3 10:21:24 2010 +0800

    PR9931: generate log to help diagnosing occasional cache hash collisions
    
    Ideas from Frank Ch. Eigler:
    - extending the hash.add() function to pass names along with the
      hash-mix values, so that class hash can internally track the
      hash-report string
    - storing the reports themselves in the cache, beside the .ko / .c
      files, and changing the cache-size-limit logic to delete
      these .txt files upon garbage collection
    
    * hash.h : New member parm_stream.
    * hash.cxx (get_parms): New function to convert parms stream to string.
      (hash::add): Aggregrate parms stream.
      (create_hash_log): New function to log hash operation.
      (find_*_hash): Log hash at the end of function.
    * cache.cxx (clean_cache): Remove log when cache reaches limitation.

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

Summary of changes:
 cache.cxx |   20 ++++++++++++++++++++
 hash.cxx  |   33 +++++++++++++++++++++++++++++++++
 hash.h    |    5 +++++
 3 files changed, 58 insertions(+), 0 deletions(-)


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