ftrace: make nostacktrace the default

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index b4b1b4f..0e4b711 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -132,7 +132,7 @@
 	NULL
 };
 
-static unsigned trace_flags = TRACE_ITER_PRINT_PARENT | TRACE_ITER_STACKTRACE;
+static unsigned trace_flags = TRACE_ITER_PRINT_PARENT;
 
 static DEFINE_SPINLOCK(ftrace_max_lock);