[Perfinsp-list] [PATCH] Improve robustness of multi-process tracing

[Maynard J. <may...@us...>]

The attached patch enhances the robustness of ITrace when tracing 
multiple processes simultaneously (e.g., via ITrace_On_GTPID() or 
run.itrace).   One of the changes made in this patch is to exclude the 
tracing of *all* kernel threads since tracing certain kernel threads is 
very problematic for ITrace.  A mechanism is needed in the tooling to 
allow the user to request tracking of particular kernel threads.

-Maynard