75 } devsoftc;  variable
151 	mtx_init(&devsoftc.mtx, "dev mtx", "devd", MTX_DEF);  in devctl_init()
152 	cv_init(&devsoftc.cv, "dev cv");  in devctl_init()
153 	STAILQ_INIT(&devsoftc.devq);  in devctl_init()
154 	knlist_init_mtx(&devsoftc.sel.si_note, &devsoftc.mtx);  in devctl_init()
163 		z = devsoftc.zone = uma_zcreate("DEVCTL",  in devctl_init()
222 	mtx_lock(&devsoftc.mtx);  in devopen()
223 	if (devsoftc.inuse) {  in devopen()
224 		mtx_unlock(&devsoftc.mtx);  in devopen()
228 	devsoftc.inuse = 1;  in devopen()
229 	mtx_unlock(&devsoftc.mtx);  in devopen()
236 	mtx_lock(&devsoftc.mtx);  in devclose()
237 	devsoftc.inuse = 0;  in devclose()
238 	devsoftc.nonblock = 0;  in devclose()
239 	devsoftc.async = 0;  in devclose()
240 	cv_broadcast(&devsoftc.cv);  in devclose()
241 	funsetown(&devsoftc.sigio);  in devclose()
242 	mtx_unlock(&devsoftc.mtx);  in devclose()
260 	mtx_lock(&devsoftc.mtx);  in devread()
261 	while (STAILQ_EMPTY(&devsoftc.devq)) {  in devread()
262 		if (devsoftc.nonblock) {  in devread()
263 			mtx_unlock(&devsoftc.mtx);  in devread()
266 		rv = cv_wait_sig(&devsoftc.cv, &devsoftc.mtx);  in devread()
271 			mtx_unlock(&devsoftc.mtx);  in devread()
275 	n1 = STAILQ_FIRST(&devsoftc.devq);  in devread()
276 	STAILQ_REMOVE_HEAD(&devsoftc.devq, dei_link);  in devread()
277 	devsoftc.queued--;  in devread()
278 	mtx_unlock(&devsoftc.mtx);  in devread()
280 	uma_zfree(devsoftc.zone, n1);  in devread()
290 			devsoftc.nonblock = 1;  in devioctl()
292 			devsoftc.nonblock = 0;  in devioctl()
296 			devsoftc.async = 1;  in devioctl()
298 			devsoftc.async = 0;  in devioctl()
301 		return fsetown(*(int *)data, &devsoftc.sigio);  in devioctl()
303 		*(int *)data = fgetown(&devsoftc.sigio);  in devioctl()
321 	mtx_lock(&devsoftc.mtx);  in devpoll()
323 		if (!STAILQ_EMPTY(&devsoftc.devq))  in devpoll()
326 			selrecord(td, &devsoftc.sel);  in devpoll()
328 	mtx_unlock(&devsoftc.mtx);  in devpoll()
340 		knlist_add(&devsoftc.sel.si_note, kn, 0);  in devkqfilter()
350 	knlist_remove(&devsoftc.sel.si_note, kn, 0);  in filt_devctl_detach()
356 	kn->kn_data = devsoftc.queued;  in filt_devctl_read()
366 	return (devsoftc.inuse == 1);  in devctl_process_running()
374 	mtx_lock(&devsoftc.mtx);  in devctl_alloc_dei()
377 	dei = uma_zalloc(devsoftc.zone, M_NOWAIT);  in devctl_alloc_dei()
379 		dei = uma_zalloc(devsoftc.zone, M_NOWAIT | M_USE_RESERVE);  in devctl_alloc_dei()
389 		if (devsoftc.queued == 0)  in devctl_alloc_dei()
391 		dei = STAILQ_FIRST(&devsoftc.devq);  in devctl_alloc_dei()
392 		STAILQ_REMOVE_HEAD(&devsoftc.devq, dei_link);  in devctl_alloc_dei()
393 		devsoftc.queued--;  in devctl_alloc_dei()
398 	mtx_unlock(&devsoftc.mtx);  in devctl_alloc_dei()
416 	uma_zfree(devsoftc.zone, dei);  in devctl_free_dei()
422 	mtx_lock(&devsoftc.mtx);  in devctl_queue()
423 	STAILQ_INSERT_TAIL(&devsoftc.devq, dei, dei_link);  in devctl_queue()
424 	devsoftc.queued++;  in devctl_queue()
425 	cv_broadcast(&devsoftc.cv);  in devctl_queue()
426 	KNOTE_LOCKED(&devsoftc.sel.si_note, 0);  in devctl_queue()
427 	mtx_unlock(&devsoftc.mtx);  in devctl_queue()
428 	selwakeup(&devsoftc.sel);  in devctl_queue()
429 	if (devsoftc.async && devsoftc.sigio != NULL)  in devctl_queue()
430 		pgsigio(&devsoftc.sigio, SIGIO, 0);  in devctl_queue()
558 	if (!mtx_initialized(&devsoftc.mtx)) {  in sysctl_devctl_queue()
572 	mtx_lock(&devsoftc.mtx);  in sysctl_devctl_queue()
574 	uma_zdestroy(devsoftc.zone);  in sysctl_devctl_queue()
575 	devsoftc.zone = 0;  in sysctl_devctl_queue()
576 	mtx_unlock(&devsoftc.mtx);  in sysctl_devctl_queue()