I wish to document the configuration parameters of an experimen, including the state of usttrace (active or not). Is there a global variable or an environmental variable that would indicate usttrace "active" or "passive" state? One solution I can think of would be to parse the command line arguments and look for usttrace. However, this would not catch the LD_PRELOAD=/usr/local/lib/libust.so.0 ls case documented at http://lttng.org/files/ust/manual/ust.html
Thanks, -Chris
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