hlock_bit 3352 kernel/locking/lockdep.c enum lock_usage_bit hlock_bit = base_bit; hlock_bit 3356 kernel/locking/lockdep.c hlock_bit += LOCK_USAGE_READ_MASK; hlock_bit 3358 kernel/locking/lockdep.c BUG_ON(hlock_bit >= LOCK_USAGE_STATES); hlock_bit 3363 kernel/locking/lockdep.c if (!mark_lock(curr, hlock, hlock_bit))