trace: Use tracing_reset_online_cpus in more places

Impact: cleanup
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: NFrédéric Weisbecker <fweisbec@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

kernel/trace/trace_branch.c

@@ -133,11 +133,7 @@ static void stop_branch_trace(struct trace_array *tr)
 
 static int branch_trace_init(struct trace_array *tr)
 {
-	int cpu;
-
-	for_each_online_cpu(cpu)
-		tracing_reset(tr, cpu);
-
+	tracing_reset_online_cpus(tr);
 	start_branch_trace(tr);
 	return 0;
 }

kernel/trace/trace_functions_graph.c

@@ -52,15 +52,11 @@ static struct tracer_flags tracer_flags = {
 
 static int graph_trace_init(struct trace_array *tr)
 {
-	int cpu, ret;
-
-	for_each_online_cpu(cpu)
-		tracing_reset(tr, cpu);
-
-	ret = register_ftrace_graph(&trace_graph_return,
+	int ret = register_ftrace_graph(&trace_graph_return,
 					&trace_graph_entry);
 	if (ret)
 		return ret;
+	tracing_reset_online_cpus(tr);
 	tracing_start_cmdline_record();
 
 	return 0;

kernel/trace/trace_nop.c

@@ -47,12 +47,8 @@ static void stop_nop_trace(struct trace_array *tr)
 
 static int nop_trace_init(struct trace_array *tr)
 {
-	int cpu;
 	ctx_trace = tr;
-
-	for_each_online_cpu(cpu)
-		tracing_reset(tr, cpu);
-
+	tracing_reset_online_cpus(tr);
 	start_nop_trace(tr);
 	return 0;
 }