tools/lib/lockdep/tests: Test the lockdep_reset_lock() implementation

This patch makes sure that the lockdep_reset_lock() function gets
tested.

Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Johannes Berg <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Sasha Levin <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Waiman Long <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

tools/lib/lockdep/include/liblockdep/common.h

@@ -44,6 +44,7 @@ void lock_acquire(struct lockdep_map *lock, unsigned int subclass,
 			struct lockdep_map *nest_lock, unsigned long ip);
 void lock_release(struct lockdep_map *lock, int nested,
 			unsigned long ip);
+void lockdep_reset_lock(struct lockdep_map *lock);
 extern void debug_check_no_locks_freed(const void *from, unsigned long len);
 
 #define STATIC_LOCKDEP_MAP_INIT(_name, _key) \

tools/lib/lockdep/include/liblockdep/mutex.h

@@ -54,6 +54,7 @@ static inline int liblockdep_pthread_mutex_trylock(liblockdep_pthread_mutex_t *l
 
 static inline int liblockdep_pthread_mutex_destroy(liblockdep_pthread_mutex_t *lock)
 {
+	lockdep_reset_lock(&lock->dep_map);
 	return pthread_mutex_destroy(&lock->mutex);
 }
 

tools/lib/lockdep/tests/ABBA.c

@@ -11,4 +11,7 @@ void main(void)
 
 	LOCK_UNLOCK_2(a, b);
 	LOCK_UNLOCK_2(b, a);
+
+	pthread_mutex_destroy(&b);
+	pthread_mutex_destroy(&a);
 }

tools/lib/lockdep/tests/ABBCCA.c

@@ -13,4 +13,8 @@ void main(void)
 	LOCK_UNLOCK_2(a, b);
 	LOCK_UNLOCK_2(b, c);
 	LOCK_UNLOCK_2(c, a);
+
+	pthread_mutex_destroy(&c);
+	pthread_mutex_destroy(&b);
+	pthread_mutex_destroy(&a);
 }

tools/lib/lockdep/tests/ABBCCDDA.c

@@ -15,4 +15,9 @@ void main(void)
 	LOCK_UNLOCK_2(b, c);
 	LOCK_UNLOCK_2(c, d);
 	LOCK_UNLOCK_2(d, a);
+
+	pthread_mutex_destroy(&d);
+	pthread_mutex_destroy(&c);
+	pthread_mutex_destroy(&b);
+	pthread_mutex_destroy(&a);
 }

tools/lib/lockdep/tests/ABCABC.c

@@ -13,4 +13,8 @@ void main(void)
 	LOCK_UNLOCK_2(a, b);
 	LOCK_UNLOCK_2(c, a);
 	LOCK_UNLOCK_2(b, c);
+
+	pthread_mutex_destroy(&c);
+	pthread_mutex_destroy(&b);
+	pthread_mutex_destroy(&a);
 }

tools/lib/lockdep/tests/ABCDBCDA.c

@@ -15,4 +15,9 @@ void main(void)
 	LOCK_UNLOCK_2(c, d);
 	LOCK_UNLOCK_2(b, c);
 	LOCK_UNLOCK_2(d, a);
+
+	pthread_mutex_destroy(&d);
+	pthread_mutex_destroy(&c);
+	pthread_mutex_destroy(&b);
+	pthread_mutex_destroy(&a);
 }

tools/lib/lockdep/tests/ABCDBDDA.c

@@ -15,4 +15,9 @@ void main(void)
 	LOCK_UNLOCK_2(c, d);
 	LOCK_UNLOCK_2(b, d);
 	LOCK_UNLOCK_2(d, a);
+
+	pthread_mutex_destroy(&d);
+	pthread_mutex_destroy(&c);
+	pthread_mutex_destroy(&b);
+	pthread_mutex_destroy(&a);
 }

tools/lib/lockdep/tests/unlock_balance.c

@@ -10,4 +10,6 @@ void main(void)
 	pthread_mutex_lock(&a);
 	pthread_mutex_unlock(&a);
 	pthread_mutex_unlock(&a);
+
+	pthread_mutex_destroy(&a);
 }