How do I know my process's scheduling policy on Linux?

Question

I know RR FIFO scheduling policy.

but is there a way to write a C program on Linux to know the current process's scheduling policy?

Answer 1

From the sched_getscheduler(2) man page :

sched_getscheduler() returns the current scheduling policy of the thread identified by pid . If pid equals zero, the policy of the calling thread will be retrieved.