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);
+struct pin_cookie { unsigned int val; };
+
+#define NIL_COOKIE (struct pin_cookie){ .val = 0U, }
+
+extern struct pin_cookie lock_pin_lock(struct lockdep_map *lock);
+extern void lock_repin_lock(struct lockdep_map *lock, struct pin_cookie);
+extern void lock_unpin_lock(struct lockdep_map *lock, struct pin_cookie);
# define INIT_LOCKDEP .lockdep_recursion = 0, .lockdep_reclaim_gfp = 0,
#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)
+#define lockdep_pin_lock(l) lock_pin_lock(&(l)->dep_map)
+#define lockdep_repin_lock(l,c) lock_repin_lock(&(l)->dep_map, (c))
+#define lockdep_unpin_lock(l,c) lock_unpin_lock(&(l)->dep_map, (c))
#else /* !CONFIG_LOCKDEP */
#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)
+struct pin_cookie { };
+
+#define NIL_COOKIE (struct pin_cookie){ }
+
+#define lockdep_pin_lock(l) ({ struct pin_cookie cookie; cookie; })
+#define lockdep_repin_lock(l, c) do { (void)(l); (void)(c); } while (0)
+#define lockdep_unpin_lock(l, c) do { (void)(l); (void)(c); } while (0)
#endif /* !LOCKDEP */
lock_acquired(&(_lock)->dep_map, _RET_IP_); \
} while (0)
+#define LOCK_CONTENDED_RETURN(_lock, try, lock) \
+({ \
+ int ____err = 0; \
+ if (!try(_lock)) { \
+ lock_contended(&(_lock)->dep_map, _RET_IP_); \
+ ____err = lock(_lock); \
+ } \
+ if (!____err) \
+ lock_acquired(&(_lock)->dep_map, _RET_IP_); \
+ ____err; \
+})
+
#else /* CONFIG_LOCK_STAT */
#define lock_contended(lockdep_map, ip) do {} while (0)
#define LOCK_CONTENDED(_lock, try, lock) \
lock(_lock)
+#define LOCK_CONTENDED_RETURN(_lock, try, lock) \
+ lock(_lock)
+
#endif /* CONFIG_LOCK_STAT */
#ifdef CONFIG_LOCKDEP