locking: rename trace_softirq_[enter|exit] => lockdep_softirq_[enter|exit]

Impact: cleanup

The naming clashes with upcoming softirq tracepoints, so rename the
APIs to lockdep_*().

Requested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h
index 74bde13..b02a3f1 100644
--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -24,8 +24,8 @@
 # define trace_softirqs_enabled(p)	((p)->softirqs_enabled)
 # define trace_hardirq_enter()	do { current->hardirq_context++; } while (0)
 # define trace_hardirq_exit()	do { current->hardirq_context--; } while (0)
-# define trace_softirq_enter()	do { current->softirq_context++; } while (0)
-# define trace_softirq_exit()	do { current->softirq_context--; } while (0)
+# define lockdep_softirq_enter()	do { current->softirq_context++; } while (0)
+# define lockdep_softirq_exit()	do { current->softirq_context--; } while (0)
 # define INIT_TRACE_IRQFLAGS	.softirqs_enabled = 1,
 #else
 # define trace_hardirqs_on()		do { } while (0)
@@ -38,8 +38,8 @@
 # define trace_softirqs_enabled(p)	0
 # define trace_hardirq_enter()		do { } while (0)
 # define trace_hardirq_exit()		do { } while (0)
-# define trace_softirq_enter()		do { } while (0)
-# define trace_softirq_exit()		do { } while (0)
+# define lockdep_softirq_enter()	do { } while (0)
+# define lockdep_softirq_exit()		do { } while (0)
 # define INIT_TRACE_IRQFLAGS
 #endif
 
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 9041ea7..08a030f 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -180,7 +180,7 @@
 	account_system_vtime(current);
 
 	__local_bh_disable((unsigned long)__builtin_return_address(0));
-	trace_softirq_enter();
+	lockdep_softirq_enter();
 
 	cpu = smp_processor_id();
 restart:
@@ -220,7 +220,7 @@
 	if (pending)
 		wakeup_softirqd();
 
-	trace_softirq_exit();
+	lockdep_softirq_exit();
 
 	account_system_vtime(current);
 	_local_bh_enable();
diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 280332c..619313e 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -157,11 +157,11 @@
 #define SOFTIRQ_ENTER()				\
 		local_bh_disable();		\
 		local_irq_disable();		\
-		trace_softirq_enter();		\
+		lockdep_softirq_enter();	\
 		WARN_ON(!in_softirq());
 
 #define SOFTIRQ_EXIT()				\
-		trace_softirq_exit();		\
+		lockdep_softirq_exit();		\
 		local_irq_enable();		\
 		local_bh_enable();