perf tools: Don't fallback to setup_pager unconditionally

Because in tools like 'top' we don't want the pager.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/ui/setup.c

@@ -14,11 +14,12 @@ static void newt_suspend(void *d __used)
 	newtResume();
 }
 
-void setup_browser(void)
+void setup_browser(bool fallback_to_pager)
 {
 	if (!isatty(1) || !use_browser || dump_trace) {
 		use_browser = 0;
-		setup_pager();
+		if (fallback_to_pager)
+			setup_pager();
 		return;
 	}