task_prio(9)

✨ NAME ✨

okay so this is task_prio from the Kernel API Manual (section 9, bestie, we're in the kernel now 💅) — and it literally just returns the priority value of a given task. that's it. that's the whole vibe. 🎀

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🌸 SYNOPSIS 🌸

int task_prio (const struct task_struct *p );

that's the whole call fr fr, no cap ✨

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🦋 ARGUMENTS 🦋

• p — the task in question. like, the specific task you're being nosy about 👀

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💖 RETURN 💖

it hands you back the priority value as seen by users in /proc — so it's the version of the number that the user-facing side of things actually shows you. icon behaviour, honestly.

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👑 DESCRIPTION 👑

bestie this is the part where it gets good — here's how the different sched policies map across the three priority worlds. the way that return value and kernel prio and user prio/nice are three whole different languages and this function is the translator 😭

• normal, batch, idle — return value [0 ... 39], kernel prio [100 ... 139], user prio/nice 0/[-20 ... 19]
• fifo, rr — return value [-2 ... -100], kernel prio [98 ... 0], user prio/nice [1 ... 99]
• deadline — return value -101, kernel prio -1, user prio/nice 0

like yes the ranges go in opposite directions for fifo/rr, no I will not be explaining why at 2am, just trust the chart 🫶

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🌈 SEE ALSO 🌈

the full squad, and honestly? they ate. go read these next 🔥

• Kernel file ./kernel/sched/syscalls.c
• idle_cpu(9)
• idle_task(9)
• find_process_by_pid(9)
• sched_setscheduler(9)
• sched_setscheduler_nocheck(9)
• sys_sched_setscheduler(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)

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ok that's the whole page bestie, go forth and check your priorities 💀💖

mwah, this came from ./kernel/sched in October 2026 — task_prio(9), section 9, signing off 🧚‍♀️⭐