I am tracing a multiprocess/multithreaded code (MPI/OpenMP) using
lttng-ust. Right now, I need to include process id and thread id for each
event in order to generate process/thread indexed view of the traces. Is
there a way that I can store per-process events into a specific buffer
without mixing the events with other events that are generated on the same
CPU? The same thing for per-thread events, I would like lttng or CTF to
allow to store per-thread events in a specific buffer without mixing the
events with other events on the same CPU channel. With that feature, I do
not need to store process id and thread id in each event and then need to
query all the events in order to collect per-process or per-thread event.

Thank you
Yonghong