[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.2-50-gbf17a5d

[fche at sourceware dot org]

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- Log -----------------------------------------------------------------
commit bf17a5d2c707e8cd031d2a1dba2709b50452ba0c
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Fri Apr 9 21:12:56 2010 -0400

    runtime: switch to deferred STP_EXIT signalling
    
    The former code allowed stapio to have two concurrent commands sent
    toward the runtime at the same time: one from the main loop and
    another one from the signal handling thread.  This is suspected to
    have caused occasional lockups.  This new code switches to a deferred
    signal handling model, where the signal handling thread merely
    increments a counter, and the main loop monitors that count.
    Unfortunately, this currently involves switching the main loop's
    blocking /.ctl read into a nonblocking poll.
    
    * runtime/staprun/mainloop.c (pending_interrupts): New variable.
      (signal_thread): Increment it.
      (stp_main_loop): Check it.

commit 2fd5495a269c9995bd5789079dc9cbd65bd23f9e
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Fri Apr 9 19:10:56 2010 -0400

    BZ580943: add more patterns to kprobe blacklist
    
    * dwflpp.cxx (build_blacklist): Add a few more entries.

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

Summary of changes:
 dwflpp.cxx                 |    2 ++
 runtime/staprun/mainloop.c |   42 ++++++++++++++++++++++++++++++++++--------
 2 files changed, 36 insertions(+), 8 deletions(-)


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