I know there is a /Process:NameOrPID switch but it affects only /StopXXX commands. Collecting ETW events from all processes leads to big *.ETL file. I am trying to be able to catch ETW events only from one process in order to avoid polluting the output file with non relevant ETW events.
Updated 2019-04-14.
Now there is a way to do that. Please use /focusProcess=ProcessIDOrName
option available in PerfView 2.0.32 (also available in UI starting from 2.0.39).