test_task 57 kernel/trace/preemptirq_delay_test.c struct task_struct *test_task; test_task 61 kernel/trace/preemptirq_delay_test.c test_task = kthread_run(preemptirq_delay_run, NULL, task_name); test_task 62 kernel/trace/preemptirq_delay_test.c return PTR_ERR_OR_ZERO(test_task);