perf trace: Don't use pager if scripting

It's useful for paging through raw traces, but just gets in the
way when scripting.
Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
LKML-Reference: <1267599873-8193-3-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

tools/perf/builtin-trace.c

@@ -573,6 +573,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __used)
 
 	if (symbol__init() < 0)
 		return -1;
+	if (!script_name)
 		setup_pager();
 
 	session = perf_session__new(input_name, O_RDONLY, 0);