selftests/ftrace: Expand the tprobe event test to check wrong format

Expand the tprobe event test case to check wrong tracepoint
format.

Link: https://lore.kernel.org/all/174055076681.4079315.16941322116874021804.stgit@mhiramat.tok.corp.google.com/



Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>

tools/testing/selftests/ftrace/test.d/dynevent/add_remove_tprobe.tc

@@ -6,6 +6,7 @@
 echo 0 > events/enable
 echo > dynamic_events
 
+SUBSYSTEM=kmem
 TRACEPOINT1=kmem_cache_alloc
 TRACEPOINT2=kmem_cache_free
 
@@ -24,4 +25,17 @@ grep -q myevent1 dynamic_events
 
 echo > dynamic_events
 
+# auto naming check
+echo "t $TRACEPOINT1" >> dynamic_events
+
+test -d events/tracepoints/$TRACEPOINT1
+
+echo > dynamic_events
+
+# SUBSYSTEM is not supported
+echo "t $SUBSYSTEM/$TRACEPOINT1" >> dynamic_events && exit_fail ||:
+echo "t $SUBSYSTEM:$TRACEPOINT1" >> dynamic_events && exit_fail ||:
+echo "t:myevent3 $SUBSYSTEM/$TRACEPOINT1" >> dynamic_events && exit_fail ||:
+echo "t:myevent3 $SUBSYSTEM:$TRACEPOINT1" >> dynamic_events && exit_fail ||:
+
 clear_trace