325 	struct drbd_thread *thi = (struct drbd_thread *) arg;  in drbd_thread_setup()  local
326 	struct drbd_resource *resource = thi->resource;  in drbd_thread_setup()
331 		 thi->name[0],  in drbd_thread_setup()
335 	retval = thi->function(thi);  in drbd_thread_setup()
337 	spin_lock_irqsave(&thi->t_lock, flags);  in drbd_thread_setup()
349 	if (thi->t_state == RESTARTING) {  in drbd_thread_setup()
350 		drbd_info(resource, "Restarting %s thread\n", thi->name);  in drbd_thread_setup()
351 		thi->t_state = RUNNING;  in drbd_thread_setup()
352 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_setup()
356 	thi->task = NULL;  in drbd_thread_setup()
357 	thi->t_state = NONE;  in drbd_thread_setup()
359 	complete_all(&thi->stop);  in drbd_thread_setup()
360 	spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_setup()
366 	if (thi->connection)  in drbd_thread_setup()
367 		kref_put(&thi->connection->kref, drbd_destroy_connection);  in drbd_thread_setup()
373 static void drbd_thread_init(struct drbd_resource *resource, struct drbd_thread *thi,  in drbd_thread_init()  argument
376 	spin_lock_init(&thi->t_lock);  in drbd_thread_init()
377 	thi->task    = NULL;  in drbd_thread_init()
378 	thi->t_state = NONE;  in drbd_thread_init()
379 	thi->function = func;  in drbd_thread_init()
380 	thi->resource = resource;  in drbd_thread_init()
381 	thi->connection = NULL;  in drbd_thread_init()
382 	thi->name = name;  in drbd_thread_init()
385 int drbd_thread_start(struct drbd_thread *thi)  in drbd_thread_start()  argument
387 	struct drbd_resource *resource = thi->resource;  in drbd_thread_start()
393 	spin_lock_irqsave(&thi->t_lock, flags);  in drbd_thread_start()
395 	switch (thi->t_state) {  in drbd_thread_start()
398 			 thi->name, current->comm, current->pid);  in drbd_thread_start()
403 			spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
408 		if (thi->connection)  in drbd_thread_start()
409 			kref_get(&thi->connection->kref);  in drbd_thread_start()
411 		init_completion(&thi->stop);  in drbd_thread_start()
412 		thi->reset_cpu_mask = 1;  in drbd_thread_start()
413 		thi->t_state = RUNNING;  in drbd_thread_start()
414 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
417 		nt = kthread_create(drbd_thread_setup, (void *) thi,  in drbd_thread_start()
418 				    "drbd_%c_%s", thi->name[0], thi->resource->name);  in drbd_thread_start()
423 			if (thi->connection)  in drbd_thread_start()
424 				kref_put(&thi->connection->kref, drbd_destroy_connection);  in drbd_thread_start()
429 		spin_lock_irqsave(&thi->t_lock, flags);  in drbd_thread_start()
430 		thi->task = nt;  in drbd_thread_start()
431 		thi->t_state = RUNNING;  in drbd_thread_start()
432 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
436 		thi->t_state = RESTARTING;  in drbd_thread_start()
438 				thi->name, current->comm, current->pid);  in drbd_thread_start()
443 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
451 void _drbd_thread_stop(struct drbd_thread *thi, int restart, int wait)  in _drbd_thread_stop()  argument
458 	spin_lock_irqsave(&thi->t_lock, flags);  in _drbd_thread_stop()
460 	if (thi->t_state == NONE) {  in _drbd_thread_stop()
461 		spin_unlock_irqrestore(&thi->t_lock, flags);  in _drbd_thread_stop()
463 			drbd_thread_start(thi);  in _drbd_thread_stop()
467 	if (thi->t_state != ns) {  in _drbd_thread_stop()
468 		if (thi->task == NULL) {  in _drbd_thread_stop()
469 			spin_unlock_irqrestore(&thi->t_lock, flags);  in _drbd_thread_stop()
473 		thi->t_state = ns;  in _drbd_thread_stop()
475 		init_completion(&thi->stop);  in _drbd_thread_stop()
476 		if (thi->task != current)  in _drbd_thread_stop()
477 			force_sig(DRBD_SIGKILL, thi->task);  in _drbd_thread_stop()
480 	spin_unlock_irqrestore(&thi->t_lock, flags);  in _drbd_thread_stop()
483 		wait_for_completion(&thi->stop);  in _drbd_thread_stop()
545 void drbd_thread_current_set_cpu(struct drbd_thread *thi)  in drbd_thread_current_set_cpu()  argument
547 	struct drbd_resource *resource = thi->resource;  in drbd_thread_current_set_cpu()
550 	if (!thi->reset_cpu_mask)  in drbd_thread_current_set_cpu()
552 	thi->reset_cpu_mask = 0;  in drbd_thread_current_set_cpu()