find_process_by_pid(9)

🎀 NAME 🎀

find_process_by_pid — straight from the Kernel API Manual — does exactly one iconic thing: find a process with a matching PID value. That's the whole name, bestie, no cap, and it's giving exactly what it says on the label 💅

✨ SYNOPSIS ✨

struct task_struct * find_process_by_pid (pid_t pid );

🌸 ARGUMENTS 🌸

• pid — the pid in question, bestie. Literally the PID you're checking 🫶

🦋 DESCRIPTION 🦋

If it finds that pid, you get the task of pid. If it doesn't, you get NULL — that's the tea, periodt 🍵✨

No extra lore, no side quests: found = the task of pid, not found = NULL, fr fr.

💖 SEE ALSO 💖

Kernel file: ./kernel/sched/syscalls.c — and the whole bestie lineup is right here, every single one, no skips 👑

• task_prio(9)
• idle_cpu(9)
• idle_task(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)

🌈 sign-off bestie: source/version ./kernel/sched • date October 2026 • page find_process_by_pid(9) — mwah 💖