in Linux kernel, is the following way right to create a real-time kthread?

Question

In Linux kernel, thread schedule is as real time ones(such as SCHED_FIFO) and normal ones(SCHED_NORMAL).

If I want to create a real-time thread, how to do this? I guess like:

1,kthread_create

2,give the thread a real time scheduler

3,assign a real time priority

Does this fine for a real-time kthread?

Answer 1

In the thread itself, call:

struct sched_param param = { .sched_priority = prio };
sched_setscheduler(current, SCHED_FIFO, &param);

where prio is the priority you want.