lock_contended
lock_contended(&sem->dep_map, _RET_IP_);
lock_contended(&sem->dep_map, _RET_IP_);
lock_contended(&kn->dep_map, _RET_IP_);
extern void lock_contended(struct lockdep_map *lock, unsigned long ip);
lock_contended(&(_lock)->dep_map, _RET_IP_); \
lock_contended(&(_lock)->dep_map, _RET_IP_); \
DEFINE_EVENT(lock, lock_contended,
EXPORT_SYMBOL_GPL(lock_contended);
lock_contended(&lock->dep_map, ip);