Lines Matching +full:wake +full:- +full:up
1 // SPDX-License-Identifier: GPL-2.0-only
54 * rpciod-related stuff
63 unsigned long timeout = READ_ONCE(task->tk_timeout); in rpc_task_timeout()
68 return timeout - now; in rpc_task_timeout()
76 * queue->lock and bh_disabled in order to avoid races within
82 if (list_empty(&task->u.tk_wait.timer_list)) in __rpc_disable_timer()
84 task->tk_timeout = 0; in __rpc_disable_timer()
85 list_del(&task->u.tk_wait.timer_list); in __rpc_disable_timer()
86 if (list_empty(&queue->timer_list.list)) in __rpc_disable_timer()
87 cancel_delayed_work(&queue->timer_list.dwork); in __rpc_disable_timer()
94 queue->timer_list.expires = expires; in rpc_set_queue_timer()
98 expires -= now; in rpc_set_queue_timer()
99 mod_delayed_work(rpciod_workqueue, &queue->timer_list.dwork, expires); in rpc_set_queue_timer()
103 * Set up a timer for the current task.
109 task->tk_timeout = timeout; in __rpc_add_timer()
110 if (list_empty(&queue->timer_list.list) || time_before(timeout, queue->timer_list.expires)) in __rpc_add_timer()
112 list_add(&task->u.tk_wait.timer_list, &queue->timer_list.list); in __rpc_add_timer()
117 if (queue->priority != priority) { in rpc_set_waitqueue_priority()
118 queue->priority = priority; in rpc_set_waitqueue_priority()
119 queue->nr = 1U << priority; in rpc_set_waitqueue_priority()
125 rpc_set_waitqueue_priority(queue, queue->maxpriority); in rpc_reset_waitqueue_priority()
137 if (t->tk_owner == task->tk_owner) { in __rpc_list_enqueue_task()
138 list_add_tail(&task->u.tk_wait.links, in __rpc_list_enqueue_task()
139 &t->u.tk_wait.links); in __rpc_list_enqueue_task()
140 /* Cache the queue head in task->u.tk_wait.list */ in __rpc_list_enqueue_task()
141 task->u.tk_wait.list.next = q; in __rpc_list_enqueue_task()
142 task->u.tk_wait.list.prev = NULL; in __rpc_list_enqueue_task()
146 INIT_LIST_HEAD(&task->u.tk_wait.links); in __rpc_list_enqueue_task()
147 list_add_tail(&task->u.tk_wait.list, q); in __rpc_list_enqueue_task()
159 if (task->u.tk_wait.list.prev == NULL) { in __rpc_list_dequeue_task()
160 list_del(&task->u.tk_wait.links); in __rpc_list_dequeue_task()
163 if (!list_empty(&task->u.tk_wait.links)) { in __rpc_list_dequeue_task()
164 t = list_first_entry(&task->u.tk_wait.links, in __rpc_list_dequeue_task()
168 q = t->u.tk_wait.list.next; in __rpc_list_dequeue_task()
169 list_add_tail(&t->u.tk_wait.list, q); in __rpc_list_dequeue_task()
170 list_del(&task->u.tk_wait.links); in __rpc_list_dequeue_task()
172 list_del(&task->u.tk_wait.list); in __rpc_list_dequeue_task()
182 if (unlikely(queue_priority > queue->maxpriority)) in __rpc_add_wait_queue_priority()
183 queue_priority = queue->maxpriority; in __rpc_add_wait_queue_priority()
184 __rpc_list_enqueue_task(&queue->tasks[queue_priority], task); in __rpc_add_wait_queue_priority()
199 INIT_LIST_HEAD(&task->u.tk_wait.timer_list); in __rpc_add_wait_queue()
203 list_add(&task->u.tk_wait.list, &queue->tasks[0]); in __rpc_add_wait_queue()
205 list_add_tail(&task->u.tk_wait.list, &queue->tasks[0]); in __rpc_add_wait_queue()
206 task->tk_waitqueue = queue; in __rpc_add_wait_queue()
207 queue->qlen++; in __rpc_add_wait_queue()
231 list_del(&task->u.tk_wait.list); in __rpc_remove_wait_queue()
232 queue->qlen--; in __rpc_remove_wait_queue()
239 spin_lock_init(&queue->lock); in __rpc_init_priority_wait_queue()
240 for (i = 0; i < ARRAY_SIZE(queue->tasks); i++) in __rpc_init_priority_wait_queue()
241 INIT_LIST_HEAD(&queue->tasks[i]); in __rpc_init_priority_wait_queue()
242 queue->maxpriority = nr_queues - 1; in __rpc_init_priority_wait_queue()
244 queue->qlen = 0; in __rpc_init_priority_wait_queue()
245 queue->timer_list.expires = 0; in __rpc_init_priority_wait_queue()
246 INIT_DELAYED_WORK(&queue->timer_list.dwork, __rpc_queue_timer_fn); in __rpc_init_priority_wait_queue()
247 INIT_LIST_HEAD(&queue->timer_list.list); in __rpc_init_priority_wait_queue()
265 cancel_delayed_work_sync(&queue->timer_list.dwork); in rpc_destroy_wait_queue()
273 return -ERESTARTSYS; in rpc_wait_bit_killable()
282 task->tk_pid = atomic_inc_return(&rpc_pid); in rpc_task_set_debuginfo()
293 set_bit(RPC_TASK_ACTIVE, &task->tk_runstate); in rpc_set_active()
299 * and then waking up all tasks that were sleeping.
303 void *m = &task->tk_runstate; in rpc_complete_task()
311 spin_lock_irqsave(&wq->lock, flags); in rpc_complete_task()
312 clear_bit(RPC_TASK_ACTIVE, &task->tk_runstate); in rpc_complete_task()
313 ret = atomic_dec_and_test(&task->tk_count); in rpc_complete_task()
316 spin_unlock_irqrestore(&wq->lock, flags); in rpc_complete_task()
324 * to enforce taking of the wq->lock and hence avoid races with
331 return out_of_line_wait_on_bit(&task->tk_runstate, RPC_TASK_ACTIVE, in __rpc_wait_for_completion_task()
356 INIT_WORK(&task->u.tk_work, rpc_async_schedule); in rpc_make_runnable()
357 queue_work(wq, &task->u.tk_work); in rpc_make_runnable()
359 wake_up_bit(&task->tk_runstate, RPC_TASK_QUEUED); in rpc_make_runnable()
365 * NB: An RPC task will only receive interrupt-driven events as long
396 task->tk_status = -ETIMEDOUT; in __rpc_sleep_on_priority_timeout()
401 if (action && !WARN_ON_ONCE(task->tk_callback != NULL)) in rpc_set_tk_callback()
402 task->tk_callback = action; in rpc_set_tk_callback()
409 task->tk_status = -EIO; in rpc_sleep_check_activated()
427 spin_lock(&q->lock); in rpc_sleep_on_timeout()
428 __rpc_sleep_on_priority_timeout(q, task, timeout, task->tk_priority); in rpc_sleep_on_timeout()
429 spin_unlock(&q->lock); in rpc_sleep_on_timeout()
441 WARN_ON_ONCE(task->tk_timeout != 0); in rpc_sleep_on()
445 spin_lock(&q->lock); in rpc_sleep_on()
446 __rpc_sleep_on_priority(q, task, task->tk_priority); in rpc_sleep_on()
447 spin_unlock(&q->lock); in rpc_sleep_on()
457 priority -= RPC_PRIORITY_LOW; in rpc_sleep_on_priority_timeout()
461 spin_lock(&q->lock); in rpc_sleep_on_priority_timeout()
463 spin_unlock(&q->lock); in rpc_sleep_on_priority_timeout()
473 WARN_ON_ONCE(task->tk_timeout != 0); in rpc_sleep_on_priority()
474 priority -= RPC_PRIORITY_LOW; in rpc_sleep_on_priority()
478 spin_lock(&q->lock); in rpc_sleep_on_priority()
480 spin_unlock(&q->lock); in rpc_sleep_on_priority()
485 * __rpc_do_wake_up_task_on_wq - wake up a single rpc_task
488 * @task: task to be woken up
490 * Caller must hold queue->lock, and have cleared the task queued flag.
496 /* Has the task been executed yet? If not, we cannot wake it up! */ in __rpc_do_wake_up_task_on_wq()
498 printk(KERN_ERR "RPC: Inactive task (%p) being woken up!\n", task); in __rpc_do_wake_up_task_on_wq()
510 * Wake up a queued task while the queue lock is being held
519 if (task->tk_waitqueue == queue) { in rpc_wake_up_task_on_wq_queue_action_locked()
530 * Wake up a queued task while the queue lock is being held
540 * Wake up a task on a specific queue
546 spin_lock(&queue->lock); in rpc_wake_up_queued_task()
548 spin_unlock(&queue->lock); in rpc_wake_up_queued_task()
554 task->tk_status = *(int *)status; in rpc_task_action_set_status()
567 * rpc_wake_up_queued_task_set_status - wake up a task and set task->tk_status
572 * If @task is queued on @queue, then it is woken up, and @task->tk_status is
581 spin_lock(&queue->lock); in rpc_wake_up_queued_task_set_status()
583 spin_unlock(&queue->lock); in rpc_wake_up_queued_task_set_status()
587 * Wake up the next task on a priority queue.
597 q = &queue->tasks[RPC_NR_PRIORITY - 1]; in __rpc_find_next_queued_priority()
598 if (queue->maxpriority > RPC_PRIORITY_PRIVILEGED && !list_empty(q)) { in __rpc_find_next_queued_priority()
606 q = &queue->tasks[queue->priority]; in __rpc_find_next_queued_priority()
607 if (!list_empty(q) && queue->nr) { in __rpc_find_next_queued_priority()
608 queue->nr--; in __rpc_find_next_queued_priority()
617 if (q == &queue->tasks[0]) in __rpc_find_next_queued_priority()
618 q = &queue->tasks[queue->maxpriority]; in __rpc_find_next_queued_priority()
620 q = q - 1; in __rpc_find_next_queued_priority()
625 } while (q != &queue->tasks[queue->priority]); in __rpc_find_next_queued_priority()
631 rpc_set_waitqueue_priority(queue, (unsigned int)(q - &queue->tasks[0])); in __rpc_find_next_queued_priority()
640 if (!list_empty(&queue->tasks[0])) in __rpc_find_next_queued()
641 return list_first_entry(&queue->tasks[0], struct rpc_task, u.tk_wait.list); in __rpc_find_next_queued()
646 * Wake up the first task on the wait queue.
654 spin_lock(&queue->lock); in rpc_wake_up_first_on_wq()
659 spin_unlock(&queue->lock); in rpc_wake_up_first_on_wq()
665 * Wake up the first task on the wait queue.
680 * Wake up the next task on the wait queue.
689 * rpc_wake_up_locked - wake up all rpc_tasks
706 * rpc_wake_up - wake up all rpc_tasks
709 * Grabs queue->lock
713 spin_lock(&queue->lock); in rpc_wake_up()
715 spin_unlock(&queue->lock); in rpc_wake_up()
720 * rpc_wake_up_status_locked - wake up all rpc_tasks and set their status value.
737 * rpc_wake_up_status - wake up all rpc_tasks and set their status value.
741 * Grabs queue->lock
745 spin_lock(&queue->lock); in rpc_wake_up_status()
747 spin_unlock(&queue->lock); in rpc_wake_up_status()
759 spin_lock(&queue->lock); in __rpc_queue_timer_fn()
761 list_for_each_entry_safe(task, n, &queue->timer_list.list, u.tk_wait.timer_list) { in __rpc_queue_timer_fn()
762 timeo = task->tk_timeout; in __rpc_queue_timer_fn()
764 trace_rpc_task_timeout(task, task->tk_action); in __rpc_queue_timer_fn()
765 task->tk_status = -ETIMEDOUT; in __rpc_queue_timer_fn()
772 if (!list_empty(&queue->timer_list.list)) in __rpc_queue_timer_fn()
774 spin_unlock(&queue->lock); in __rpc_queue_timer_fn()
779 if (task->tk_status == -ETIMEDOUT) in __rpc_atrun()
780 task->tk_status = 0; in __rpc_atrun()
793 * Helper to call task->tk_ops->rpc_call_prepare
797 task->tk_ops->rpc_call_prepare(task, task->tk_calldata); in rpc_prepare_task()
804 task->tk_garb_retry = 2; in rpc_init_task_statistics()
805 task->tk_cred_retry = 2; in rpc_init_task_statistics()
806 task->tk_rebind_retry = 2; in rpc_init_task_statistics()
809 task->tk_start = ktime_get(); in rpc_init_task_statistics()
815 task->tk_timeouts = 0; in rpc_reset_task_statistics()
816 task->tk_flags &= ~(RPC_CALL_MAJORSEEN|RPC_TASK_SENT); in rpc_reset_task_statistics()
821 * Helper that calls task->tk_ops->rpc_call_done if it exists
825 trace_rpc_task_end(task, task->tk_action); in rpc_exit_task()
826 task->tk_action = NULL; in rpc_exit_task()
827 if (task->tk_ops->rpc_count_stats) in rpc_exit_task()
828 task->tk_ops->rpc_count_stats(task, task->tk_calldata); in rpc_exit_task()
829 else if (task->tk_client) in rpc_exit_task()
830 rpc_count_iostats(task, task->tk_client->cl_metrics); in rpc_exit_task()
831 if (task->tk_ops->rpc_call_done != NULL) { in rpc_exit_task()
832 task->tk_ops->rpc_call_done(task, task->tk_calldata); in rpc_exit_task()
833 if (task->tk_action != NULL) { in rpc_exit_task()
848 trace_rpc_task_signalled(task, task->tk_action); in rpc_signal_task()
849 set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate); in rpc_signal_task()
851 queue = READ_ONCE(task->tk_waitqueue); in rpc_signal_task()
853 rpc_wake_up_queued_task_set_status(queue, task, -ERESTARTSYS); in rpc_signal_task()
858 task->tk_status = status; in rpc_exit()
859 task->tk_action = rpc_exit_task; in rpc_exit()
860 rpc_wake_up_queued_task(task->tk_waitqueue, task); in rpc_exit()
866 if (ops->rpc_release != NULL) in rpc_release_calldata()
867 ops->rpc_release(calldata); in rpc_release_calldata()
893 do_action = task->tk_action; in __rpc_execute()
894 if (task->tk_callback) { in __rpc_execute()
895 do_action = task->tk_callback; in __rpc_execute()
896 task->tk_callback = NULL; in __rpc_execute()
913 task->tk_rpc_status = -ERESTARTSYS; in __rpc_execute()
914 rpc_exit(task, -ERESTARTSYS); in __rpc_execute()
918 * The queue->lock protects against races with in __rpc_execute()
926 queue = task->tk_waitqueue; in __rpc_execute()
927 spin_lock(&queue->lock); in __rpc_execute()
929 spin_unlock(&queue->lock); in __rpc_execute()
933 spin_unlock(&queue->lock); in __rpc_execute()
938 trace_rpc_task_sync_sleep(task, task->tk_action); in __rpc_execute()
939 status = out_of_line_wait_on_bit(&task->tk_runstate, in __rpc_execute()
945 * -ERESTARTSYS. In order to catch any callbacks that in __rpc_execute()
946 * clean up after sleeping on some queue, we don't in __rpc_execute()
949 trace_rpc_task_signalled(task, task->tk_action); in __rpc_execute()
950 set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate); in __rpc_execute()
951 task->tk_rpc_status = -ERESTARTSYS; in __rpc_execute()
952 rpc_exit(task, -ERESTARTSYS); in __rpc_execute()
954 trace_rpc_task_sync_wake(task, task->tk_action); in __rpc_execute()
962 * User-visible entry point to the scheduler.
992 * rpc_malloc - allocate RPC buffer resources
1000 * returning -ENOMEM and suppressing warning if the request cannot
1010 struct rpc_rqst *rqst = task->tk_rqstp; in rpc_malloc()
1011 size_t size = rqst->rq_callsize + rqst->rq_rcvsize; in rpc_malloc()
1025 return -ENOMEM; in rpc_malloc()
1027 buf->len = size; in rpc_malloc()
1028 rqst->rq_buffer = buf->data; in rpc_malloc()
1029 rqst->rq_rbuffer = (char *)rqst->rq_buffer + rqst->rq_callsize; in rpc_malloc()
1035 * rpc_free - free RPC buffer resources allocated via rpc_malloc
1041 void *buffer = task->tk_rqstp->rq_buffer; in rpc_free()
1046 size = buf->len; in rpc_free()
1061 atomic_set(&task->tk_count, 1); in rpc_init_task()
1062 task->tk_flags = task_setup_data->flags; in rpc_init_task()
1063 task->tk_ops = task_setup_data->callback_ops; in rpc_init_task()
1064 task->tk_calldata = task_setup_data->callback_data; in rpc_init_task()
1065 INIT_LIST_HEAD(&task->tk_task); in rpc_init_task()
1067 task->tk_priority = task_setup_data->priority - RPC_PRIORITY_LOW; in rpc_init_task()
1068 task->tk_owner = current->tgid; in rpc_init_task()
1071 task->tk_workqueue = task_setup_data->workqueue; in rpc_init_task()
1073 task->tk_xprt = rpc_task_get_xprt(task_setup_data->rpc_client, in rpc_init_task()
1074 xprt_get(task_setup_data->rpc_xprt)); in rpc_init_task()
1076 task->tk_op_cred = get_rpccred(task_setup_data->rpc_op_cred); in rpc_init_task()
1078 if (task->tk_ops->rpc_call_prepare != NULL) in rpc_init_task()
1079 task->tk_action = rpc_prepare_task; in rpc_init_task()
1095 struct rpc_task *task = setup_data->task; in rpc_new_task()
1104 task->tk_flags |= flags; in rpc_new_task()
1109 * rpc_free_task - release rpc task and perform cleanups
1111 * Note that we free up the rpc_task _after_ rpc_release_calldata()
1116 * on the same address and won't execute them concurrently - ie. it
1129 unsigned short tk_flags = task->tk_flags; in rpc_free_task()
1131 put_rpccred(task->tk_op_cred); in rpc_free_task()
1132 rpc_release_calldata(task->tk_ops, task->tk_calldata); in rpc_free_task()
1149 if (task->tk_msg.rpc_cred) { in rpc_release_resources_task()
1150 if (!(task->tk_flags & RPC_TASK_CRED_NOREF)) in rpc_release_resources_task()
1151 put_cred(task->tk_msg.rpc_cred); in rpc_release_resources_task()
1152 task->tk_msg.rpc_cred = NULL; in rpc_release_resources_task()
1161 INIT_WORK(&task->u.tk_work, rpc_async_release); in rpc_final_put_task()
1162 queue_work(q, &task->u.tk_work); in rpc_final_put_task()
1169 if (atomic_dec_and_test(&task->tk_count)) { in rpc_do_put_task()
1183 rpc_do_put_task(task, task->tk_workqueue); in rpc_put_task_async()
1194 * Note: at this point we have been removed from rpc_clnt->cl_tasks, in rpc_release_task()
1195 * so it should be safe to use task->tk_count as a test for whether in rpc_release_task()
1198 if (atomic_read(&task->tk_count) != 1 + !RPC_IS_ASYNC(task)) { in rpc_release_task()
1199 /* Wake up anyone who may be waiting for task completion */ in rpc_release_task()
1203 if (!atomic_dec_and_test(&task->tk_count)) in rpc_release_task()
1206 rpc_final_put_task(task, task->tk_workqueue); in rpc_release_task()
1211 return try_module_get(THIS_MODULE) ? 0 : -EINVAL; in rpciod_up()
1220 * Start up the rpciod workqueue.
1307 return -ENOMEM; in rpc_init_mempool()