[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-0.7-5-g3e961ba

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- Log -----------------------------------------------------------------
commit 3e961ba66a8250310a1ea67cddb52d92469a6d4b
Author: James Bottomley <James dot Bottomley at HansenPartnership dot com>
Date:   Mon Jul 14 16:49:00 2008 -0500

    fix missing functions in caches
    
    Both the inline and non inline filtered function caches can lose
    functions.  This happens because both of these caches are indexed by the
    entrypc.  However, the vagaries of optimisation can actually cause us to
    end up with two functions with apparently the same entrypc (mainly
    because for inline functions, the entrypc has to be deduced from the
    range of addresses, which is nastily heuristic).
    
    A nice example of this is bsg_io_schedule.  In my build of 2.6.26 it's a
    static function transformed to an inline by the compiler.  The range
    deduction of its entrypc ends up being identical to that of bsg_release,
    so when I try to place a probe inside it, none of the function
    references actually refers to it.
    
    Since nothing ever actually makes use of this index, the fix is simple:
    don't use a map indexed on the entrypc, use a simple vector.
    
    Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

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

Summary of changes:
 tapsets.cxx |   84 +++++++++++++++++++++++++++++++----------------------------
 1 files changed, 44 insertions(+), 40 deletions(-)


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systemtap: system-wide probe/trace tool