ftrace: enabled tracing by default

This patch is the correct way to have tracing enabled by default.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
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 c56fc5e..3dc6eac 100644 (file)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -107,7 +107,7 @@ static struct trace_array   max_tr;
 
 static DEFINE_PER_CPU(struct trace_array_cpu, max_data);
 
-static int                     tracer_enabled;
+static int                     tracer_enabled = 1;
 static unsigned long           trace_nr_entries = 16384UL;
 
 static struct tracer           *trace_types __read_mostly;
@@ -2268,6 +2268,8 @@ __init static int tracer_alloc_buffers(void)
        int ret = -ENOMEM;
        int i;
 
+       global_trace.ctrl = tracer_enabled;
+
        /* Allocate the first page for all buffers */
        for_each_possible_cpu(i) {
                data = global_trace.data[i] = &per_cpu(global_trace_cpu, i);