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2024-11-01 7e970c18f85f99acc678d90128b6e01dce1bf273

 kernel/include/linux/lockdep.h
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@@ -214,29 +214,30 @@
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  * of dependencies wrong: they are either too broad (they need a class-split)
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  * or they are too narrow (they suffer from a false class-split):
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  */
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-#define lockdep_set_class(lock, key)				\
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-	lockdep_init_map_type(&(lock)->dep_map, #key, key, 0,	\
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-			      (lock)->dep_map.wait_type_inner,	\
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-			      (lock)->dep_map.wait_type_outer,	\
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-			      (lock)->dep_map.lock_type)
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+#define lockdep_set_class(lock, key)					\
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+	lockdep_init_map_type(LOCKDEP_ALT_DEPMAP(lock), #key, key, 0,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->wait_type_inner,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->wait_type_outer,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->lock_type)
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-#define lockdep_set_class_and_name(lock, key, name)		\
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-	lockdep_init_map_type(&(lock)->dep_map, name, key, 0,	\
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-			      (lock)->dep_map.wait_type_inner,	\
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-			      (lock)->dep_map.wait_type_outer,	\
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-			      (lock)->dep_map.lock_type)
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+#define lockdep_set_class_and_name(lock, key, name)			\
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+	lockdep_init_map_type(LOCKDEP_ALT_DEPMAP(lock), name, key, 0,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->wait_type_inner,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->wait_type_outer,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->lock_type)
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-#define lockdep_set_class_and_subclass(lock, key, sub)		\
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-	lockdep_init_map_type(&(lock)->dep_map, #key, key, sub,	\
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-			      (lock)->dep_map.wait_type_inner,	\
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-			      (lock)->dep_map.wait_type_outer,	\
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-			      (lock)->dep_map.lock_type)
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+#define lockdep_set_class_and_subclass(lock, key, sub)			\
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+	lockdep_init_map_type(LOCKDEP_ALT_DEPMAP(lock), #key, key, sub,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->wait_type_inner,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->wait_type_outer,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->lock_type)
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 #define lockdep_set_subclass(lock, sub)					\
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-	lockdep_init_map_type(&(lock)->dep_map, #lock, (lock)->dep_map.key, sub,\
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-			      (lock)->dep_map.wait_type_inner,		\
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-			      (lock)->dep_map.wait_type_outer,		\
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-			      (lock)->dep_map.lock_type)
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+	lockdep_init_map_type(LOCKDEP_ALT_DEPMAP(lock), #lock,		\
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+			LOCKDEP_ALT_DEPMAP(lock)->key, sub,		\
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+			LOCKDEP_ALT_DEPMAP(lock)->wait_type_inner,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->wait_type_outer,	\
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+			LOCKDEP_ALT_DEPMAP(lock)->lock_type)
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 #define lockdep_set_novalidate_class(lock) \
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 	lockdep_set_class_and_name(lock, &__lockdep_no_validate__, #lock)
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@@ -244,7 +245,8 @@
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 /*
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  * Compare locking classes
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  */
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-#define lockdep_match_class(lock, key) lockdep_match_key(&(lock)->dep_map, key)
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+#define lockdep_match_class(lock, key) \
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+	lockdep_match_key(LOCKDEP_ALT_DEPMAP(lock), key)
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 static inline int lockdep_match_key(struct lockdep_map *lock,
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 				    struct lock_class_key *key)
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@@ -282,8 +284,8 @@
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 	return lock_is_held_type(lock, -1);
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 }
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-#define lockdep_is_held(lock)		lock_is_held(&(lock)->dep_map)
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-#define lockdep_is_held_type(lock, r)	lock_is_held_type(&(lock)->dep_map, (r))
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+#define lockdep_is_held(lock)		lock_is_held(LOCKDEP_ALT_DEPMAP(lock))
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+#define lockdep_is_held_type(lock, r)	lock_is_held_type(LOCKDEP_ALT_DEPMAP(lock), (r))
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 extern void lock_set_class(struct lockdep_map *lock, const char *name,
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 			   struct lock_class_key *key, unsigned int subclass,
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@@ -306,26 +308,27 @@
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 #define lockdep_depth(tsk)	(debug_locks ? (tsk)->lockdep_depth : 0)
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 #define lockdep_assert_held(l)	do {				\
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-		WARN_ON(debug_locks && !lockdep_is_held(l));	\
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+		WARN_ON(debug_locks && !LOCKDEP_HARD_DEBUG_RET(l, 1, lockdep_is_held(l))); \
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 	} while (0)
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 #define lockdep_assert_held_write(l)	do {			\
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-		WARN_ON(debug_locks && !lockdep_is_held_type(l, 0));	\
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+		WARN_ON(debug_locks && !LOCKDEP_HARD_DEBUG_RET(l, 1, lockdep_is_held_type(l, 0))); \
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 	} while (0)
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 #define lockdep_assert_held_read(l)	do {				\
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-		WARN_ON(debug_locks && !lockdep_is_held_type(l, 1));	\
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+		WARN_ON(debug_locks && !LOCKDEP_HARD_DEBUG_RET(l, 1, lockdep_is_held_type(l, 1))); \
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 	} while (0)
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 #define lockdep_assert_held_once(l)	do {				\
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-		WARN_ON_ONCE(debug_locks && !lockdep_is_held(l));	\
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+		WARN_ON_ONCE(debug_locks && !LOCKDEP_HARD_DEBUG_RET(l, 1, lockdep_is_held(l))); \
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 	} while (0)
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 #define lockdep_recursing(tsk)	((tsk)->lockdep_recursion)
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-#define lockdep_pin_lock(l)	lock_pin_lock(&(l)->dep_map)
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-#define lockdep_repin_lock(l,c)	lock_repin_lock(&(l)->dep_map, (c))
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-#define lockdep_unpin_lock(l,c)	lock_unpin_lock(&(l)->dep_map, (c))
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+#define lockdep_pin_lock(l)	LOCKDEP_HARD_DEBUG_RET(l, ({ struct pin_cookie cookie; cookie;} ), \
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+							lock_pin_lock(LOCKDEP_ALT_DEPMAP(l)))
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+#define lockdep_repin_lock(l,c)	LOCKDEP_HARD_DEBUG(l,, lock_repin_lock(LOCKDEP_ALT_DEPMAP(l), (c)))
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+#define lockdep_unpin_lock(l,c)	LOCKDEP_HARD_DEBUG(l,, lock_unpin_lock(LOCKDEP_ALT_DEPMAP(l), (c)))
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 #else /* !CONFIG_LOCKDEP */
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@@ -552,22 +555,22 @@
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 #ifdef CONFIG_PROVE_LOCKING
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 # define might_lock(lock)						\
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 do {									\
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-	typecheck(struct lockdep_map *, &(lock)->dep_map);		\
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-	lock_acquire(&(lock)->dep_map, 0, 0, 0, 1, NULL, _THIS_IP_);	\
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-	lock_release(&(lock)->dep_map, _THIS_IP_);			\
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+	typecheck(struct lockdep_map *, LOCKDEP_ALT_DEPMAP(lock));	\
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+	lock_acquire(LOCKDEP_ALT_DEPMAP(lock), 0, 0, 0, 1, NULL, _THIS_IP_);	\
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+	lock_release(LOCKDEP_ALT_DEPMAP(lock), _THIS_IP_);			\
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 } while (0)
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 # define might_lock_read(lock)						\
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 do {									\
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-	typecheck(struct lockdep_map *, &(lock)->dep_map);		\
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-	lock_acquire(&(lock)->dep_map, 0, 0, 1, 1, NULL, _THIS_IP_);	\
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-	lock_release(&(lock)->dep_map, _THIS_IP_);			\
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+	typecheck(struct lockdep_map *, LOCKDEP_ALT_DEPMAP(lock));	\
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+	lock_acquire(LOCKDEP_ALT_DEPMAP(lock), 0, 0, 1, 1, NULL, _THIS_IP_); \
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+	lock_release(LOCKDEP_ALT_DEPMAP(lock), _THIS_IP_);		\
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 } while (0)
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 # define might_lock_nested(lock, subclass)				\
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 do {									\
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-	typecheck(struct lockdep_map *, &(lock)->dep_map);		\
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-	lock_acquire(&(lock)->dep_map, subclass, 0, 1, 1, NULL,		\
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+	typecheck(struct lockdep_map *, LOCKDEP_ALT_DEPMAP(lock));	\
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+	lock_acquire(LOCKDEP_ALT_DEPMAP(lock), subclass, 0, 1, 1, NULL,	\
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 		     _THIS_IP_);					\
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-	lock_release(&(lock)->dep_map, _THIS_IP_);			\
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+	lock_release(LOCKDEP_ALT_DEPMAP(lock), _THIS_IP_);		\
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 } while (0)
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 DECLARE_PER_CPU(int, hardirqs_enabled);
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@@ -576,14 +579,32 @@
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 #define __lockdep_enabled	(debug_locks && !this_cpu_read(lockdep_recursion))
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+#define __lockdep_check_irqs_enabled()					\
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+	({ !hard_irqs_disabled() &&					\
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+		(running_oob() || this_cpu_read(hardirqs_enabled)); })
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+
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 #define lockdep_assert_irqs_enabled()					\
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-do {									\
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-	WARN_ON_ONCE(__lockdep_enabled && !this_cpu_read(hardirqs_enabled)); \
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-} while (0)
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+	do {								\
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+		WARN_ON_ONCE(__lockdep_enabled &&			\
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+			!__lockdep_check_irqs_enabled());		\
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+	} while (0)
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+
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+#define __lockdep_check_irqs_disabled()					\
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+	({ hard_irqs_disabled() ||					\
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+		(running_inband() && !this_cpu_read(hardirqs_enabled)); })
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 #define lockdep_assert_irqs_disabled()					\
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+	  do {								\
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+		  WARN_ON_ONCE(__lockdep_enabled &&			\
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+			  !__lockdep_check_irqs_disabled());		\
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+	  } while (0)
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+
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+#define lockdep_read_irqs_state()					\
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+	({ this_cpu_read(hardirqs_enabled); })
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+
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+#define lockdep_write_irqs_state(__state)				\
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 do {									\
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-	WARN_ON_ONCE(__lockdep_enabled && this_cpu_read(hardirqs_enabled)); \
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+	this_cpu_write(hardirqs_enabled, __state);			\
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 } while (0)
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 #define lockdep_assert_in_irq()						\
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@@ -596,7 +617,7 @@
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 	WARN_ON_ONCE(IS_ENABLED(CONFIG_PREEMPT_COUNT)	&&		\
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 		     __lockdep_enabled			&&		\
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 		     (preempt_count() != 0		||		\
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-		      !this_cpu_read(hardirqs_enabled)));		\
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+		     __lockdep_check_irqs_disabled()));			\
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 } while (0)
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 #define lockdep_assert_preemption_disabled()				\
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@@ -604,7 +625,7 @@
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 	WARN_ON_ONCE(IS_ENABLED(CONFIG_PREEMPT_COUNT)	&&		\
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 		     __lockdep_enabled			&&		\
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 		     (preempt_count() == 0		&&		\
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-		      this_cpu_read(hardirqs_enabled)));		\
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+		     __lockdep_check_irqs_enabled()));			\
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 } while (0)
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 #else
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@@ -614,6 +635,8 @@
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 # define lockdep_assert_irqs_enabled() do { } while (0)
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 # define lockdep_assert_irqs_disabled() do { } while (0)
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+# define lockdep_read_irqs_state() 0
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+# define lockdep_write_irqs_state(__state) do { (void)(__state); } while (0)
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 # define lockdep_assert_in_irq() do { } while (0)
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 # define lockdep_assert_preemption_enabled() do { } while (0)