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 <bvanassche@acm.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Cc: johannes.berg@intel.com
Cc: tj@kernel.org
Link: https://lkml.kernel.org/r/20181207011148.251812-8-bvanassche@acm.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

9 files changed, 30 insertions, 0 deletions

diff --git a/tools/lib/lockdep/include/liblockdep/common.h b/tools/lib/lockdep/include/liblockdep/common.h
index 8862da80995a..d640a9761f09 100644
--- a/tools/lib/lockdep/include/liblockdep/common.h
+++ b/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) \
diff --git a/tools/lib/lockdep/include/liblockdep/mutex.h b/tools/lib/lockdep/include/liblockdep/mutex.h
index a80ac39f966e..2073d4e1f2f0 100644
--- a/tools/lib/lockdep/include/liblockdep/mutex.h
+++ b/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);
 }
 
diff --git a/tools/lib/lockdep/tests/ABBA.c b/tools/lib/lockdep/tests/ABBA.c
index 1460afd33d71..623313f54720 100644
--- a/tools/lib/lockdep/tests/ABBA.c
+++ b/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);
 }
diff --git a/tools/lib/lockdep/tests/ABBCCA.c b/tools/lib/lockdep/tests/ABBCCA.c
index a54c1b2af118..48446129d496 100644
--- a/tools/lib/lockdep/tests/ABBCCA.c
+++ b/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);
 }
diff --git a/tools/lib/lockdep/tests/ABBCCDDA.c b/tools/lib/lockdep/tests/ABBCCDDA.c
index aa5d194e8869..3570bf7b3804 100644
--- a/tools/lib/lockdep/tests/ABBCCDDA.c
+++ b/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);
 }
diff --git a/tools/lib/lockdep/tests/ABCABC.c b/tools/lib/lockdep/tests/ABCABC.c
index b54a08e60416..a1c4659894cd 100644
--- a/tools/lib/lockdep/tests/ABCABC.c
+++ b/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);
 }
diff --git a/tools/lib/lockdep/tests/ABCDBCDA.c b/tools/lib/lockdep/tests/ABCDBCDA.c
index a56742250d86..335af1c90ab5 100644
--- a/tools/lib/lockdep/tests/ABCDBCDA.c
+++ b/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);
 }
diff --git a/tools/lib/lockdep/tests/ABCDBDDA.c b/tools/lib/lockdep/tests/ABCDBDDA.c
index 238a3353f3c3..3c5972863049 100644
--- a/tools/lib/lockdep/tests/ABCDBDDA.c
+++ b/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);
 }
diff --git a/tools/lib/lockdep/tests/unlock_balance.c b/tools/lib/lockdep/tests/unlock_balance.c
index 34cf32f689de..dba25064b50a 100644
--- a/tools/lib/lockdep/tests/unlock_balance.c
+++ b/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);
 }