Filter sample events using the given shared object file.
Refer linkperf:perf-dlfilter[1]
+--dlarg=<arg>::
+ Pass 'arg' as an argument to the dlfilter. --dlarg may be repeated
+ to add more arguments.
+
--list-dlfilters=::
Display a list of available dlfilters. Use with option -v (must come
before option --list-dlfilters) to show long descriptions.