sys_sched_setscheduler(9)

💅 sys_sched_setscheduler(9) 💅

okay so bestie, welcome to the Kernel API Manual page for sys_sched_setscheduler(9) — and the way this page is short but still eats? obsessed. it's literally all about setting/changing the scheduler policy and RT priority. yes ma'am. ✨

🌸 NAME 🌸

sys_sched_setscheduler — set/change the scheduler policy and RT priority. periodt.

✨ SYNOPSIS ✨

long sys_sched_setscheduler (pid_t pid , int policy , struct sched_param __user * param );

🎀 ARGUMENTS 🎀

• pid — the pid in question. literally just the pid we're talking about, bestie.
• policy — new policy. the fresh scheduler policy, no cap.
• param — structure containing the new RT priority. it's giving struct sched_param, and it holds the new RT priority. 🫶

🔥 RETURN 🔥

0 on success. An error code otherwise. so if the vibe check passes, you get 0; if not, you get an error code. simple as that. 💅

🦋 SEE ALSO 🦋

Kernel file: ./kernel/sched/syscalls.c — yes, that's the kernel file, bestie. 👑

• task_prio(9)
• idle_cpu(9)
• idle_task(9)
• find_process_by_pid(9)
• sched_setscheduler(9)
• sched_setscheduler_nocheck(9)
• sys_sched_setparam(9)
• sys_sched_setattr(9)
• sys_sched_getscheduler(9)
• sys_sched_getparam(9)
• sys_sched_getattr(9)
• sys_sched_setaffinity(9)
• sys_sched_getaffinity(9)
• sys_sched_yield(9)
• yield(9)
• yield_to(9)
• sys_sched_get_priority_max(9)
• sys_sched_get_priority_min(9)
• sys_sched_rr_get_interval(9)

mwah 💋 — source/version ./kernel/sched, date October 2026, and it's literally sys_sched_setscheduler(9) signing off. 🫶💖