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-rw-r--r--tools/lib/lockdep/include/liblockdep/common.h54
-rw-r--r--tools/lib/lockdep/include/liblockdep/mutex.h73
-rw-r--r--tools/lib/lockdep/include/liblockdep/rwlock.h87
3 files changed, 214 insertions, 0 deletions
diff --git a/tools/lib/lockdep/include/liblockdep/common.h b/tools/lib/lockdep/include/liblockdep/common.h
new file mode 100644
index 000000000..a6d7ee5f1
--- /dev/null
+++ b/tools/lib/lockdep/include/liblockdep/common.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LIBLOCKDEP_COMMON_H
+#define _LIBLOCKDEP_COMMON_H
+
+#include <pthread.h>
+
+#define NR_LOCKDEP_CACHING_CLASSES 2
+#define MAX_LOCKDEP_SUBCLASSES 8UL
+
+#ifndef CALLER_ADDR0
+#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
+#endif
+
+#ifndef _RET_IP_
+#define _RET_IP_ CALLER_ADDR0
+#endif
+
+#ifndef _THIS_IP_
+#define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; })
+#endif
+
+struct lockdep_subclass_key {
+ char __one_byte;
+};
+
+struct lock_class_key {
+ struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES];
+};
+
+struct lockdep_map {
+ struct lock_class_key *key;
+ struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES];
+ const char *name;
+#ifdef CONFIG_LOCK_STAT
+ int cpu;
+ unsigned long ip;
+#endif
+};
+
+void lockdep_init_map(struct lockdep_map *lock, const char *name,
+ struct lock_class_key *key, int subclass);
+void lock_acquire(struct lockdep_map *lock, unsigned int subclass,
+ int trylock, int read, int check,
+ struct lockdep_map *nest_lock, unsigned long ip);
+void lock_release(struct lockdep_map *lock, 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) \
+ { .name = (_name), .key = (void *)(_key), }
+
+#endif
diff --git a/tools/lib/lockdep/include/liblockdep/mutex.h b/tools/lib/lockdep/include/liblockdep/mutex.h
new file mode 100644
index 000000000..bd106b827
--- /dev/null
+++ b/tools/lib/lockdep/include/liblockdep/mutex.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LIBLOCKDEP_MUTEX_H
+#define _LIBLOCKDEP_MUTEX_H
+
+#include <pthread.h>
+#include "common.h"
+
+struct liblockdep_pthread_mutex {
+ pthread_mutex_t mutex;
+ struct lock_class_key key;
+ struct lockdep_map dep_map;
+};
+
+typedef struct liblockdep_pthread_mutex liblockdep_pthread_mutex_t;
+
+#define LIBLOCKDEP_PTHREAD_MUTEX_INITIALIZER(mtx) \
+ (const struct liblockdep_pthread_mutex) { \
+ .mutex = PTHREAD_MUTEX_INITIALIZER, \
+ .dep_map = STATIC_LOCKDEP_MAP_INIT(#mtx, &((&(mtx))->dep_map)), \
+}
+
+static inline int __mutex_init(liblockdep_pthread_mutex_t *lock,
+ const char *name,
+ struct lock_class_key *key,
+ const pthread_mutexattr_t *__mutexattr)
+{
+ lockdep_init_map(&lock->dep_map, name, key, 0);
+ return pthread_mutex_init(&lock->mutex, __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)
+{
+ lock_acquire(&lock->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_);
+ return pthread_mutex_lock(&lock->mutex);
+}
+
+static inline int liblockdep_pthread_mutex_unlock(liblockdep_pthread_mutex_t *lock)
+{
+ lock_release(&lock->dep_map, (unsigned long)_RET_IP_);
+ return pthread_mutex_unlock(&lock->mutex);
+}
+
+static inline int liblockdep_pthread_mutex_trylock(liblockdep_pthread_mutex_t *lock)
+{
+ lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_);
+ return pthread_mutex_trylock(&lock->mutex) == 0 ? 1 : 0;
+}
+
+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);
+}
+
+#ifdef __USE_LIBLOCKDEP
+
+#define pthread_mutex_t liblockdep_pthread_mutex_t
+#define pthread_mutex_init liblockdep_pthread_mutex_init
+#define pthread_mutex_lock liblockdep_pthread_mutex_lock
+#define pthread_mutex_unlock liblockdep_pthread_mutex_unlock
+#define pthread_mutex_trylock liblockdep_pthread_mutex_trylock
+#define pthread_mutex_destroy liblockdep_pthread_mutex_destroy
+
+#endif
+
+#endif
diff --git a/tools/lib/lockdep/include/liblockdep/rwlock.h b/tools/lib/lockdep/include/liblockdep/rwlock.h
new file mode 100644
index 000000000..6d5d2932b
--- /dev/null
+++ b/tools/lib/lockdep/include/liblockdep/rwlock.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LIBLOCKDEP_RWLOCK_H
+#define _LIBLOCKDEP_RWLOCK_H
+
+#include <pthread.h>
+#include "common.h"
+
+struct liblockdep_pthread_rwlock {
+ pthread_rwlock_t rwlock;
+ struct lockdep_map dep_map;
+};
+
+typedef struct liblockdep_pthread_rwlock liblockdep_pthread_rwlock_t;
+
+#define LIBLOCKDEP_PTHREAD_RWLOCK_INITIALIZER(rwl) \
+ (struct liblockdep_pthread_rwlock) { \
+ .rwlock = PTHREAD_RWLOCK_INITIALIZER, \
+ .dep_map = STATIC_LOCKDEP_MAP_INIT(#rwl, &((&(rwl))->dep_map)), \
+}
+
+static inline int __rwlock_init(liblockdep_pthread_rwlock_t *lock,
+ const char *name,
+ struct lock_class_key *key,
+ const pthread_rwlockattr_t *attr)
+{
+ lockdep_init_map(&lock->dep_map, name, key, 0);
+
+ return pthread_rwlock_init(&lock->rwlock, attr);
+}
+
+#define liblockdep_pthread_rwlock_init(lock, attr) \
+({ \
+ static struct lock_class_key __key; \
+ \
+ __rwlock_init((lock), #lock, &__key, (attr)); \
+})
+
+static inline int liblockdep_pthread_rwlock_rdlock(liblockdep_pthread_rwlock_t *lock)
+{
+ lock_acquire(&lock->dep_map, 0, 0, 2, 1, NULL, (unsigned long)_RET_IP_);
+ return pthread_rwlock_rdlock(&lock->rwlock);
+
+}
+
+static inline int liblockdep_pthread_rwlock_unlock(liblockdep_pthread_rwlock_t *lock)
+{
+ lock_release(&lock->dep_map, (unsigned long)_RET_IP_);
+ return pthread_rwlock_unlock(&lock->rwlock);
+}
+
+static inline int liblockdep_pthread_rwlock_wrlock(liblockdep_pthread_rwlock_t *lock)
+{
+ lock_acquire(&lock->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_);
+ return pthread_rwlock_wrlock(&lock->rwlock);
+}
+
+static inline int liblockdep_pthread_rwlock_tryrdlock(liblockdep_pthread_rwlock_t *lock)
+{
+ lock_acquire(&lock->dep_map, 0, 1, 2, 1, NULL, (unsigned long)_RET_IP_);
+ return pthread_rwlock_tryrdlock(&lock->rwlock) == 0 ? 1 : 0;
+}
+
+static inline int liblockdep_pthread_rwlock_trywrlock(liblockdep_pthread_rwlock_t *lock)
+{
+ lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_);
+ return pthread_rwlock_trywrlock(&lock->rwlock) == 0 ? 1 : 0;
+}
+
+static inline int liblockdep_rwlock_destroy(liblockdep_pthread_rwlock_t *lock)
+{
+ return pthread_rwlock_destroy(&lock->rwlock);
+}
+
+#ifdef __USE_LIBLOCKDEP
+
+#define pthread_rwlock_t liblockdep_pthread_rwlock_t
+#define pthread_rwlock_init liblockdep_pthread_rwlock_init
+#define pthread_rwlock_rdlock liblockdep_pthread_rwlock_rdlock
+#define pthread_rwlock_unlock liblockdep_pthread_rwlock_unlock
+#define pthread_rwlock_wrlock liblockdep_pthread_rwlock_wrlock
+#define pthread_rwlock_tryrdlock liblockdep_pthread_rwlock_tryrdlock
+#define pthread_rwlock_trywrlock liblockdep_pthread_rwlock_trywrlock
+#define pthread_rwlock_destroy liblockdep_rwlock_destroy
+
+#endif
+
+#endif