LOCKDEBUG_BARRIER
LOCKDEBUG_BARRIER(p->p_lock, 0);
LOCKDEBUG_BARRIER(NULL, 0);
LOCKDEBUG_BARRIER(kernel_lock, 1);
LOCKDEBUG_BARRIER(NULL, 0);
LOCKDEBUG_BARRIER(NULL, 0);
LOCKDEBUG_BARRIER(&kernel_lock, 1);
LOCKDEBUG_BARRIER(&kernel_lock, 1);
LOCKDEBUG_BARRIER(l->l_mutex, 1);
LOCKDEBUG_BARRIER(NULL, 1);
LOCKDEBUG_BARRIER(l->l_mutex, 1);
LOCKDEBUG_BARRIER(owner->l_mutex, 1);
LOCKDEBUG_BARRIER(l->l_mutex, 1);
LOCKDEBUG_BARRIER(cur->l_mutex, 1);
LOCKDEBUG_BARRIER(lock, 1);
LOCKDEBUG_BARRIER(NULL, 0);
LOCKDEBUG_BARRIER(NULL, 0);