trace-cmd: Unit test for tracefs_tracers() API A unit test for tracefs_tracers() API. Link: http://lore.kernel.org/linux-trace-devel/20200129095421.881786-9-tz.stoyanov@gmail.com Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>