83 	struct task_struct *g, *task;  in klp_complete_transition()  local
115 	for_each_process_thread(g, task) {  in klp_complete_transition()
116 		WARN_ON_ONCE(test_tsk_thread_flag(task, TIF_PATCH_PENDING));  in klp_complete_transition()
117 		task->patch_state = KLP_UNDEFINED;  in klp_complete_transition()
122 		task = idle_task(cpu);  in klp_complete_transition()
123 		WARN_ON_ONCE(test_tsk_thread_flag(task, TIF_PATCH_PENDING));  in klp_complete_transition()
124 		task->patch_state = KLP_UNDEFINED;  in klp_complete_transition()
175 void klp_update_patch_state(struct task_struct *task)  in klp_update_patch_state()  argument
195 	if (test_and_clear_tsk_thread_flag(task, TIF_PATCH_PENDING))  in klp_update_patch_state()
196 		task->patch_state = READ_ONCE(klp_target_state);  in klp_update_patch_state()
254 static int klp_check_stack(struct task_struct *task, char *err_buf)  in klp_check_stack()  argument
266 	ret = save_stack_trace_tsk_reliable(task, &trace);  in klp_check_stack()
271 			 __func__, task->comm, task->pid);  in klp_check_stack()
283 					 __func__, task->comm, task->pid,  in klp_check_stack()
298 static bool klp_try_switch_task(struct task_struct *task)  in klp_try_switch_task()  argument
309 	if (task->patch_state == klp_target_state)  in klp_try_switch_task()
317 	rq = task_rq_lock(task, &flags);  in klp_try_switch_task()
319 	if (task_running(rq, task) && task != current) {  in klp_try_switch_task()
321 			 "%s: %s:%d is running\n", __func__, task->comm,  in klp_try_switch_task()
322 			 task->pid);  in klp_try_switch_task()
326 	ret = klp_check_stack(task, err_buf);  in klp_try_switch_task()
332 	clear_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_try_switch_task()
333 	task->patch_state = klp_target_state;  in klp_try_switch_task()
336 	task_rq_unlock(rq, task, &flags);  in klp_try_switch_task()
361 	struct task_struct *g, *task;  in klp_try_complete_transition()  local
376 	for_each_process_thread(g, task)  in klp_try_complete_transition()
377 		if (!klp_try_switch_task(task))  in klp_try_complete_transition()
386 		task = idle_task(cpu);  in klp_try_complete_transition()
388 			if (!klp_try_switch_task(task))  in klp_try_complete_transition()
390 		} else if (task->patch_state != klp_target_state) {  in klp_try_complete_transition()
392 			clear_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_try_complete_transition()
393 			task->patch_state = klp_target_state;  in klp_try_complete_transition()
419 	struct task_struct *g, *task;  in klp_start_transition()  local
434 	for_each_process_thread(g, task)  in klp_start_transition()
435 		if (task->patch_state != klp_target_state)  in klp_start_transition()
436 			set_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_start_transition()
445 		task = idle_task(cpu);  in klp_start_transition()
446 		if (task->patch_state != klp_target_state)  in klp_start_transition()
447 			set_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_start_transition()
458 	struct task_struct *g, *task;  in klp_init_transition()  local
482 	for_each_process_thread(g, task) {  in klp_init_transition()
483 		WARN_ON_ONCE(task->patch_state != KLP_UNDEFINED);  in klp_init_transition()
484 		task->patch_state = initial_state;  in klp_init_transition()
492 		task = idle_task(cpu);  in klp_init_transition()
493 		WARN_ON_ONCE(task->patch_state != KLP_UNDEFINED);  in klp_init_transition()
494 		task->patch_state = initial_state;  in klp_init_transition()
533 	struct task_struct *g, *task;  in klp_reverse_transition()  local
550 	for_each_process_thread(g, task)  in klp_reverse_transition()
551 		clear_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_reverse_transition()
578 	struct task_struct *g, *task;  in klp_send_signals()  local
583 	for_each_process_thread(g, task) {  in klp_send_signals()
584 		if (!klp_patch_pending(task))  in klp_send_signals()
593 		if (task->flags & PF_KTHREAD) {  in klp_send_signals()
598 			wake_up_state(task, TASK_INTERRUPTIBLE);  in klp_send_signals()
604 			spin_lock_irq(&task->sighand->siglock);  in klp_send_signals()
605 			signal_wake_up(task, 0);  in klp_send_signals()
606 			spin_unlock_irq(&task->sighand->siglock);  in klp_send_signals()
623 	struct task_struct *g, *task;  in klp_force_transition()  local
629 	for_each_process_thread(g, task)  in klp_force_transition()
630 		klp_update_patch_state(task);  in klp_force_transition()