320 	struct drbd_thread *thi = (struct drbd_thread *) arg;  in drbd_thread_setup()  local
321 	struct drbd_resource *resource = thi->resource;  in drbd_thread_setup()
326 		 thi->name[0],  in drbd_thread_setup()
332 	retval = thi->function(thi);  in drbd_thread_setup()
334 	spin_lock_irqsave(&thi->t_lock, flags);  in drbd_thread_setup()
346 	if (thi->t_state == RESTARTING) {  in drbd_thread_setup()
347 		drbd_info(resource, "Restarting %s thread\n", thi->name);  in drbd_thread_setup()
348 		thi->t_state = RUNNING;  in drbd_thread_setup()
349 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_setup()
353 	thi->task = NULL;  in drbd_thread_setup()
354 	thi->t_state = NONE;  in drbd_thread_setup()
356 	complete_all(&thi->stop);  in drbd_thread_setup()
357 	spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_setup()
363 	if (thi->connection)  in drbd_thread_setup()
364 		kref_put(&thi->connection->kref, drbd_destroy_connection);  in drbd_thread_setup()
370 static void drbd_thread_init(struct drbd_resource *resource, struct drbd_thread *thi,  in drbd_thread_init()  argument
373 	spin_lock_init(&thi->t_lock);  in drbd_thread_init()
374 	thi->task    = NULL;  in drbd_thread_init()
375 	thi->t_state = NONE;  in drbd_thread_init()
376 	thi->function = func;  in drbd_thread_init()
377 	thi->resource = resource;  in drbd_thread_init()
378 	thi->connection = NULL;  in drbd_thread_init()
379 	thi->name = name;  in drbd_thread_init()
382 int drbd_thread_start(struct drbd_thread *thi)  in drbd_thread_start()  argument
384 	struct drbd_resource *resource = thi->resource;  in drbd_thread_start()
390 	spin_lock_irqsave(&thi->t_lock, flags);  in drbd_thread_start()
392 	switch (thi->t_state) {  in drbd_thread_start()
395 			 thi->name, current->comm, current->pid);  in drbd_thread_start()
400 			spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
405 		if (thi->connection)  in drbd_thread_start()
406 			kref_get(&thi->connection->kref);  in drbd_thread_start()
408 		init_completion(&thi->stop);  in drbd_thread_start()
409 		thi->reset_cpu_mask = 1;  in drbd_thread_start()
410 		thi->t_state = RUNNING;  in drbd_thread_start()
411 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
414 		nt = kthread_create(drbd_thread_setup, (void *) thi,  in drbd_thread_start()
415 				    "drbd_%c_%s", thi->name[0], thi->resource->name);  in drbd_thread_start()
420 			if (thi->connection)  in drbd_thread_start()
421 				kref_put(&thi->connection->kref, drbd_destroy_connection);  in drbd_thread_start()
426 		spin_lock_irqsave(&thi->t_lock, flags);  in drbd_thread_start()
427 		thi->task = nt;  in drbd_thread_start()
428 		thi->t_state = RUNNING;  in drbd_thread_start()
429 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
433 		thi->t_state = RESTARTING;  in drbd_thread_start()
435 				thi->name, current->comm, current->pid);  in drbd_thread_start()
440 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
448 void _drbd_thread_stop(struct drbd_thread *thi, int restart, int wait)  in _drbd_thread_stop()  argument
455 	spin_lock_irqsave(&thi->t_lock, flags);  in _drbd_thread_stop()
457 	if (thi->t_state == NONE) {  in _drbd_thread_stop()
458 		spin_unlock_irqrestore(&thi->t_lock, flags);  in _drbd_thread_stop()
460 			drbd_thread_start(thi);  in _drbd_thread_stop()
464 	if (thi->t_state != ns) {  in _drbd_thread_stop()
465 		if (thi->task == NULL) {  in _drbd_thread_stop()
466 			spin_unlock_irqrestore(&thi->t_lock, flags);  in _drbd_thread_stop()
470 		thi->t_state = ns;  in _drbd_thread_stop()
472 		init_completion(&thi->stop);  in _drbd_thread_stop()
473 		if (thi->task != current)  in _drbd_thread_stop()
474 			send_sig(DRBD_SIGKILL, thi->task, 1);  in _drbd_thread_stop()
477 	spin_unlock_irqrestore(&thi->t_lock, flags);  in _drbd_thread_stop()
480 		wait_for_completion(&thi->stop);  in _drbd_thread_stop()
543 void drbd_thread_current_set_cpu(struct drbd_thread *thi)  in drbd_thread_current_set_cpu()  argument
545 	struct drbd_resource *resource = thi->resource;  in drbd_thread_current_set_cpu()
548 	if (!thi->reset_cpu_mask)  in drbd_thread_current_set_cpu()
550 	thi->reset_cpu_mask = 0;  in drbd_thread_current_set_cpu()