perf trace: Filter out gnome-terminal* parent

Just like it does with 'sshd', to reduce the feedback loop when doing
system wide tracing on on a gnome GUI.

Need to figure out how to auto-filter the calls to other UI components
tho.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-rjopq5y92itgokppdhe8sc6z@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-trace.c

@@ -2771,7 +2771,8 @@ static int trace__set_filter_loop_pids(struct trace *trace)
 		if (parent == NULL)
 			break;
 
-		if (!strcmp(thread__comm_str(parent), "sshd")) {
+		if (!strcmp(thread__comm_str(parent), "sshd") ||
+		    strstarts(thread__comm_str(parent), "gnome-terminal")) {
 			pids[nr++] = parent->tid;
 			break;
 		}