sys_getpid(9)

🎀 NAME 🎀

okay bestie, welcome to sys_getpid(9) — the Kernel API Manual page that's literally about the current process. This one is sys_getpid — it returns the thread group id of the current process. 💖

✨ SYNOPSIS ✨

Like, the whole signature is this and only this:

long sys_getpid (void );

🦋 ARGUMENTS 🦋

• void — no arguments. Not a single one. The vibe is empty in the best way. 🫶

💅 DESCRIPTION 💅

Okay so note: despite the name, sys_getpid returns the tgid, not the pid. The tgid and the pid are identical unless CLONE_THREAD was specified on clone, in which case the tgid is the same in all threads of the same group. Periodt. 🎀

This is SMP safe because current->tgid does not change. No cap, it's stable like that. ✨

🌈 SEE ALSO 🌈

go peek at these too, bestie:

• Kernel file ./kernel/sys.c
• do_sysinfo(9)

okay bestie, that's the page 💜 — source/version is ./kernel, dated October 2026, and yes, it's still sys_getpid(9) in the Kernel API Manual. slay ✨💅🎀