diff options
| author | Bart Van Assche <bvanassche@acm.org> | 2019-02-14 15:00:58 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-02-28 07:55:48 +0100 |
| commit | f214737b75b0ee79763b5c058b9d5e83d711348d (patch) | |
| tree | 984c71e50a6ae9a95cb5d825438993b45266a4a6 /tools/lib | |
| parent | d93ac78bf7b37db36fa00225f8e9a14c7ed1b2ba (diff) | |
lockdep/lib/tests: Test dynamic key registration
Make sure that the lockdep_register_key() and lockdep_unregister_key()
code is tested when running the lockdep tests.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: johannes.berg@intel.com
Cc: tj@kernel.org
Link: https://lkml.kernel.org/r/20190214230058.196511-24-bvanassche@acm.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/lockdep/include/liblockdep/common.h | 2 | ||||
| -rw-r--r-- | tools/lib/lockdep/include/liblockdep/mutex.h | 11 | ||||
| -rw-r--r-- | tools/lib/lockdep/tests/ABBA.c | 9 |
3 files changed, 17 insertions, 5 deletions
diff --git a/tools/lib/lockdep/include/liblockdep/common.h b/tools/lib/lockdep/include/liblockdep/common.h index d640a9761f09..a81d91d4fc78 100644 --- a/tools/lib/lockdep/include/liblockdep/common.h +++ b/tools/lib/lockdep/include/liblockdep/common.h @@ -45,6 +45,8 @@ void lock_acquire(struct lockdep_map *lock, unsigned int subclass, void lock_release(struct lockdep_map *lock, int nested, unsigned long ip); void lockdep_reset_lock(struct lockdep_map *lock); +void lockdep_register_key(struct lock_class_key *key); +void lockdep_unregister_key(struct lock_class_key *key); 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 2073d4e1f2f0..783dd0df06f9 100644 --- a/tools/lib/lockdep/include/liblockdep/mutex.h +++ b/tools/lib/lockdep/include/liblockdep/mutex.h @@ -7,6 +7,7 @@ struct liblockdep_pthread_mutex { pthread_mutex_t mutex; + struct lock_class_key key; struct lockdep_map dep_map; }; @@ -27,11 +28,10 @@ static inline int __mutex_init(liblockdep_pthread_mutex_t *lock, return pthread_mutex_init(&lock->mutex, __mutexattr); } -#define liblockdep_pthread_mutex_init(mutex, mutexattr) \ -({ \ - static struct lock_class_key __key; \ - \ - __mutex_init((mutex), #mutex, &__key, (mutexattr)); \ +#define liblockdep_pthread_mutex_init(mutex, mutexattr) \ +({ \ + lockdep_register_key(&(mutex)->key); \ + __mutex_init((mutex), #mutex, &(mutex)->key, (mutexattr)); \ }) static inline int liblockdep_pthread_mutex_lock(liblockdep_pthread_mutex_t *lock) @@ -55,6 +55,7 @@ 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); + lockdep_unregister_key(&lock->key); return pthread_mutex_destroy(&lock->mutex); } diff --git a/tools/lib/lockdep/tests/ABBA.c b/tools/lib/lockdep/tests/ABBA.c index 623313f54720..543789bc3e37 100644 --- a/tools/lib/lockdep/tests/ABBA.c +++ b/tools/lib/lockdep/tests/ABBA.c @@ -14,4 +14,13 @@ void main(void) pthread_mutex_destroy(&b); pthread_mutex_destroy(&a); + + pthread_mutex_init(&a, NULL); + pthread_mutex_init(&b, NULL); + + LOCK_UNLOCK_2(a, b); + LOCK_UNLOCK_2(b, a); + + pthread_mutex_destroy(&b); + pthread_mutex_destroy(&a); } |