307 } devsoftc;  variable
315 	lockinit(&devsoftc.lock, "dev mtx", 0, 0);  in predevinit()
316 	TAILQ_INIT(&devsoftc.devq);  in predevinit()
339 	lockmgr(&devsoftc.lock, LK_EXCLUSIVE);  in devopen()
340 	if (devsoftc.inuse) {  in devopen()
341 		lockmgr(&devsoftc.lock, LK_RELEASE);  in devopen()
345 	devsoftc.inuse = 1;  in devopen()
346 	devsoftc.async_proc = NULL;  in devopen()
347 	lockmgr(&devsoftc.lock, LK_RELEASE);  in devopen()
355 	lockmgr(&devsoftc.lock, LK_EXCLUSIVE);  in devclose()
356 	devsoftc.inuse = 0;  in devclose()
357 	wakeup(&devsoftc);  in devclose()
358 	lockmgr(&devsoftc.lock, LK_RELEASE);  in devclose()
378 	lockmgr(&devsoftc.lock, LK_EXCLUSIVE);  in devread()
379 	while (TAILQ_EMPTY(&devsoftc.devq)) {  in devread()
381 			lockmgr(&devsoftc.lock, LK_RELEASE);  in devread()
384 		tsleep_interlock(&devsoftc, PCATCH);  in devread()
385 		lockmgr(&devsoftc.lock, LK_RELEASE);  in devread()
386 		rv = tsleep(&devsoftc, PCATCH | PINTERLOCKED, "devctl", 0);  in devread()
387 		lockmgr(&devsoftc.lock, LK_EXCLUSIVE);  in devread()
392 			lockmgr(&devsoftc.lock, LK_RELEASE);  in devread()
396 	n1 = TAILQ_FIRST(&devsoftc.devq);  in devread()
397 	TAILQ_REMOVE(&devsoftc.devq, n1, dei_link);  in devread()
398 	lockmgr(&devsoftc.lock, LK_RELEASE);  in devread()
414 			devsoftc.async_proc = curproc;  in devioctl()
416 			devsoftc.async_proc = NULL;  in devioctl()
445 	lockmgr(&devsoftc.lock, LK_EXCLUSIVE);  in devkqfilter()
453 		lockmgr(&devsoftc.lock, LK_RELEASE);  in devkqfilter()
457 	klist = &devsoftc.kq.ki_note;  in devkqfilter()
460 	lockmgr(&devsoftc.lock, LK_RELEASE);  in devkqfilter()
470 	lockmgr(&devsoftc.lock, LK_EXCLUSIVE);  in dev_filter_detach()
471 	klist = &devsoftc.kq.ki_note;  in dev_filter_detach()
473 	lockmgr(&devsoftc.lock, LK_RELEASE);  in dev_filter_detach()
481 	lockmgr(&devsoftc.lock, LK_EXCLUSIVE);  in dev_filter_read()
482 	if (!TAILQ_EMPTY(&devsoftc.devq))  in dev_filter_read()
484 	lockmgr(&devsoftc.lock, LK_RELEASE);  in dev_filter_read()
496 	return (devsoftc.inuse == 1);  in devctl_process_running()
516 	lockmgr(&devsoftc.lock, LK_EXCLUSIVE);  in devctl_queue_data()
517 	TAILQ_INSERT_TAIL(&devsoftc.devq, n1, dei_link);  in devctl_queue_data()
518 	wakeup(&devsoftc);  in devctl_queue_data()
519 	lockmgr(&devsoftc.lock, LK_RELEASE);  in devctl_queue_data()
520 	KNOTE(&devsoftc.kq.ki_note, 0);  in devctl_queue_data()
521 	p = devsoftc.async_proc;  in devctl_queue_data()
707 	lockmgr(&devsoftc.lock, LK_EXCLUSIVE);  in sysctl_devctl_disable()
710 		while (!TAILQ_EMPTY(&devsoftc.devq)) {  in sysctl_devctl_disable()
711 			n1 = TAILQ_FIRST(&devsoftc.devq);  in sysctl_devctl_disable()
712 			TAILQ_REMOVE(&devsoftc.devq, n1, dei_link);  in sysctl_devctl_disable()
717 	lockmgr(&devsoftc.lock, LK_RELEASE);  in sysctl_devctl_disable()