[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.4-249-g5e971c2

[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.4-249-g5e971c2

[fche]

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commit 5e971c2e3413b74589140026c68165e1835956c5
Author: Frank Ch. Eigler <fche@redhat.com>
Date:   Tue Apr 19 14:40:05 2011 -0400

    module shutdown: be verbose upon a hang
    
    In the generated module_exit() function, there exists an infinite loop
    that waits for all probe handlers that might still be struggling along
    to shut down, before authorizing removal of the probe module.  If
    something is stuck though, it will stay stuck without any diagnostics
    short of a hung stapio/staprun process that's sitting in the kernel.
    
    This patch causes a message to be printk KERN_ERR'd, in case the
    shutdown synchronization takes more than a second.
    
    * translate.cxx (emit_module_exit): Print a message if holdon-spinning
      for more than a second.

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

Summary of changes:
 translate.cxx |   15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)


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systemtap: system-wide probe/trace tool