74 	struct task_struct *g, *task;  in klp_complete_transition()  local
111 	for_each_process_thread(g, task) {  in klp_complete_transition()
112 		WARN_ON_ONCE(test_tsk_thread_flag(task, TIF_PATCH_PENDING));  in klp_complete_transition()
113 		task->patch_state = KLP_UNDEFINED;  in klp_complete_transition()
118 		task = idle_task(cpu);  in klp_complete_transition()
119 		WARN_ON_ONCE(test_tsk_thread_flag(task, TIF_PATCH_PENDING));  in klp_complete_transition()
120 		task->patch_state = KLP_UNDEFINED;  in klp_complete_transition()
164 void klp_update_patch_state(struct task_struct *task)  in klp_update_patch_state()  argument
184 	if (test_and_clear_tsk_thread_flag(task, TIF_PATCH_PENDING))  in klp_update_patch_state()
185 		task->patch_state = READ_ONCE(klp_target_state);  in klp_update_patch_state()
243 static int klp_check_stack(struct task_struct *task, char *err_buf)  in klp_check_stack()  argument
250 	ret = stack_trace_save_tsk_reliable(task, entries, ARRAY_SIZE(entries));  in klp_check_stack()
254 			 __func__, task->comm, task->pid);  in klp_check_stack()
267 					 __func__, task->comm, task->pid,  in klp_check_stack()
282 static bool klp_try_switch_task(struct task_struct *task)  in klp_try_switch_task()  argument
293 	if (task->patch_state == klp_target_state)  in klp_try_switch_task()
308 	rq = task_rq_lock(task, &flags);  in klp_try_switch_task()
310 	if (task_running(rq, task) && task != current) {  in klp_try_switch_task()
312 			 "%s: %s:%d is running\n", __func__, task->comm,  in klp_try_switch_task()
313 			 task->pid);  in klp_try_switch_task()
317 	ret = klp_check_stack(task, err_buf);  in klp_try_switch_task()
323 	clear_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_try_switch_task()
324 	task->patch_state = klp_target_state;  in klp_try_switch_task()
327 	task_rq_unlock(rq, task, &flags);  in klp_try_switch_task()
346 	struct task_struct *g, *task;  in klp_send_signals()  local
352 	for_each_process_thread(g, task) {  in klp_send_signals()
353 		if (!klp_patch_pending(task))  in klp_send_signals()
362 		if (task->flags & PF_KTHREAD) {  in klp_send_signals()
367 			wake_up_state(task, TASK_INTERRUPTIBLE);  in klp_send_signals()
373 			set_notify_signal(task);  in klp_send_signals()
390 	struct task_struct *g, *task;  in klp_try_complete_transition()  local
406 	for_each_process_thread(g, task)  in klp_try_complete_transition()
407 		if (!klp_try_switch_task(task))  in klp_try_complete_transition()
416 		task = idle_task(cpu);  in klp_try_complete_transition()
418 			if (!klp_try_switch_task(task))  in klp_try_complete_transition()
420 		} else if (task->patch_state != klp_target_state) {  in klp_try_complete_transition()
422 			clear_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_try_complete_transition()
423 			task->patch_state = klp_target_state;  in klp_try_complete_transition()
464 	struct task_struct *g, *task;  in klp_start_transition()  local
479 	for_each_process_thread(g, task)  in klp_start_transition()
480 		if (task->patch_state != klp_target_state)  in klp_start_transition()
481 			set_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_start_transition()
490 		task = idle_task(cpu);  in klp_start_transition()
491 		if (task->patch_state != klp_target_state)  in klp_start_transition()
492 			set_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_start_transition()
505 	struct task_struct *g, *task;  in klp_init_transition()  local
529 	for_each_process_thread(g, task) {  in klp_init_transition()
530 		WARN_ON_ONCE(task->patch_state != KLP_UNDEFINED);  in klp_init_transition()
531 		task->patch_state = initial_state;  in klp_init_transition()
539 		task = idle_task(cpu);  in klp_init_transition()
540 		WARN_ON_ONCE(task->patch_state != KLP_UNDEFINED);  in klp_init_transition()
541 		task->patch_state = initial_state;  in klp_init_transition()
580 	struct task_struct *g, *task;  in klp_reverse_transition()  local
597 	for_each_process_thread(g, task)  in klp_reverse_transition()
598 		clear_tsk_thread_flag(task, TIF_PATCH_PENDING);  in klp_reverse_transition()
644 	struct task_struct *g, *task;  in klp_force_transition()  local
650 	for_each_process_thread(g, task)  in klp_force_transition()
651 		klp_update_patch_state(task);  in klp_force_transition()