ftrace: replace raw_local_irq_save with local_irq_save

Impact: fix for lockdep and ftrace

The raw_local_irq_save/restore confuses lockdep. This patch
converts them to the local_irq_save/restore variants.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c
index bc97275..6c00feb 100644
--- a/kernel/trace/trace_branch.c
+++ b/kernel/trace/trace_branch.c
@@ -42,7 +42,7 @@
 	if (unlikely(!tr))
 		return;
 
-	raw_local_irq_save(flags);
+	local_irq_save(flags);
 	cpu = raw_smp_processor_id();
 	if (atomic_inc_return(&tr->data[cpu]->disabled) != 1)
 		goto out;
@@ -74,7 +74,7 @@
 
  out:
 	atomic_dec(&tr->data[cpu]->disabled);
-	raw_local_irq_restore(flags);
+	local_irq_restore(flags);
 }
 
 static inline