1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 066ba4157541..c5b6b5830acf 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -255,6 +255,7 @@ struct held_lock {
         unsigned int check:1;       /* see lock_acquire() comment */
         unsigned int hardirqs_off:1;
         unsigned int references:12;                                     /* 32 bits */
+        unsigned int pin_count;
 };
 
 /*
@@ -354,6 +355,9 @@ extern void lockdep_set_current_reclaim_state(gfp_t gfp_mask);
 extern void lockdep_clear_current_reclaim_state(void);
 extern void lockdep_trace_alloc(gfp_t mask);
 
+extern void lock_pin_lock(struct lockdep_map *lock);
+extern void lock_unpin_lock(struct lockdep_map *lock);
+
 # define INIT_LOCKDEP                           .lockdep_recursion = 0, .lockdep_reclaim_gfp = 0,
 
 #define lockdep_depth(tsk)      (debug_locks ? (tsk)->lockdep_depth : 0)
@@ -368,6 +372,9 @@ extern void lockdep_trace_alloc(gfp_t mask);
 
 #define lockdep_recursing(tsk)  ((tsk)->lockdep_recursion)
 
+#define lockdep_pin_lock(l)             lock_pin_lock(&(l)->dep_map)
+#define lockdep_unpin_lock(l)   lock_unpin_lock(&(l)->dep_map)
+
 #else /* !CONFIG_LOCKDEP */
 
 static inline void lockdep_off(void)
@@ -420,6 +427,9 @@ struct lock_class_key { };
 
 #define lockdep_recursing(tsk)                  (0)
 
+#define lockdep_pin_lock(l)                             do { (void)(l); } while (0)
+#define lockdep_unpin_lock(l)                   do { (void)(l); } while (0)
+
 #endif /* !LOCKDEP */
 
 #ifdef CONFIG_LOCK_STAT