Miscellaneous scheduling related topics

We close this chapter with a couple of miscellaneous yet useful topic mentions.

A few small (kernel space) routines to check out

Here are a few kernel routines you may find useful (we leave it to you to look up the details and sample usage within the kernel):

• rt_prio(): Given the priority as a parameter, returns a Boolean to indicate whether it’s a real-time task or not.
• rt_task(): Based on the priority value of the task, given the task structure pointer as a parameter, returns a Boolean to indicate whether it’s a real-time task or not (a wrapper over rt_prio()).
• task_is_realtime(): Similar, but based on the scheduling policy of the task. Given the task structure pointer as a parameter, returns a Boolean to indicate whether it’s a real-time task or not.

As the above routines all fall within a header (include/linux/sched/rt.h), simply include it and directly use them within your module...