317 	struct drbd_thread *thi = (struct drbd_thread *) arg;  in drbd_thread_setup()  local
318 	struct drbd_resource *resource = thi->resource;  in drbd_thread_setup()
323 		 thi->name[0],  in drbd_thread_setup()
329 	retval = thi->function(thi);  in drbd_thread_setup()
331 	spin_lock_irqsave(&thi->t_lock, flags);  in drbd_thread_setup()
343 	if (thi->t_state == RESTARTING) {  in drbd_thread_setup()
344 		drbd_info(resource, "Restarting %s thread\n", thi->name);  in drbd_thread_setup()
345 		thi->t_state = RUNNING;  in drbd_thread_setup()
346 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_setup()
350 	thi->task = NULL;  in drbd_thread_setup()
351 	thi->t_state = NONE;  in drbd_thread_setup()
353 	complete_all(&thi->stop);  in drbd_thread_setup()
354 	spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_setup()
360 	if (thi->connection)  in drbd_thread_setup()
361 		kref_put(&thi->connection->kref, drbd_destroy_connection);  in drbd_thread_setup()
367 static void drbd_thread_init(struct drbd_resource *resource, struct drbd_thread *thi,  in drbd_thread_init()  argument
370 	spin_lock_init(&thi->t_lock);  in drbd_thread_init()
371 	thi->task    = NULL;  in drbd_thread_init()
372 	thi->t_state = NONE;  in drbd_thread_init()
373 	thi->function = func;  in drbd_thread_init()
374 	thi->resource = resource;  in drbd_thread_init()
375 	thi->connection = NULL;  in drbd_thread_init()
376 	thi->name = name;  in drbd_thread_init()
379 int drbd_thread_start(struct drbd_thread *thi)  in drbd_thread_start()  argument
381 	struct drbd_resource *resource = thi->resource;  in drbd_thread_start()
387 	spin_lock_irqsave(&thi->t_lock, flags);  in drbd_thread_start()
389 	switch (thi->t_state) {  in drbd_thread_start()
392 			 thi->name, current->comm, current->pid);  in drbd_thread_start()
397 			spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
402 		if (thi->connection)  in drbd_thread_start()
403 			kref_get(&thi->connection->kref);  in drbd_thread_start()
405 		init_completion(&thi->stop);  in drbd_thread_start()
406 		thi->reset_cpu_mask = 1;  in drbd_thread_start()
407 		thi->t_state = RUNNING;  in drbd_thread_start()
408 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
411 		nt = kthread_create(drbd_thread_setup, (void *) thi,  in drbd_thread_start()
412 				    "drbd_%c_%s", thi->name[0], thi->resource->name);  in drbd_thread_start()
417 			if (thi->connection)  in drbd_thread_start()
418 				kref_put(&thi->connection->kref, drbd_destroy_connection);  in drbd_thread_start()
423 		spin_lock_irqsave(&thi->t_lock, flags);  in drbd_thread_start()
424 		thi->task = nt;  in drbd_thread_start()
425 		thi->t_state = RUNNING;  in drbd_thread_start()
426 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
430 		thi->t_state = RESTARTING;  in drbd_thread_start()
432 				thi->name, current->comm, current->pid);  in drbd_thread_start()
437 		spin_unlock_irqrestore(&thi->t_lock, flags);  in drbd_thread_start()
445 void _drbd_thread_stop(struct drbd_thread *thi, int restart, int wait)  in _drbd_thread_stop()  argument
452 	spin_lock_irqsave(&thi->t_lock, flags);  in _drbd_thread_stop()
454 	if (thi->t_state == NONE) {  in _drbd_thread_stop()
455 		spin_unlock_irqrestore(&thi->t_lock, flags);  in _drbd_thread_stop()
457 			drbd_thread_start(thi);  in _drbd_thread_stop()
461 	if (thi->t_state != ns) {  in _drbd_thread_stop()
462 		if (thi->task == NULL) {  in _drbd_thread_stop()
463 			spin_unlock_irqrestore(&thi->t_lock, flags);  in _drbd_thread_stop()
467 		thi->t_state = ns;  in _drbd_thread_stop()
469 		init_completion(&thi->stop);  in _drbd_thread_stop()
470 		if (thi->task != current)  in _drbd_thread_stop()
471 			send_sig(DRBD_SIGKILL, thi->task, 1);  in _drbd_thread_stop()
474 	spin_unlock_irqrestore(&thi->t_lock, flags);  in _drbd_thread_stop()
477 		wait_for_completion(&thi->stop);  in _drbd_thread_stop()
540 void drbd_thread_current_set_cpu(struct drbd_thread *thi)  in drbd_thread_current_set_cpu()  argument
542 	struct drbd_resource *resource = thi->resource;  in drbd_thread_current_set_cpu()
545 	if (!thi->reset_cpu_mask)  in drbd_thread_current_set_cpu()
547 	thi->reset_cpu_mask = 0;  in drbd_thread_current_set_cpu()