is_global_init(9)

💖 is_global_init(9) 💖

okay bestie, welcome to is_global_init(9) from the Kernel API Manual — this is the little function that does a very specific vibe check on task structures, and honestly? iconic. ✨

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🌸 NAME 🌸

is_global_init — check if a task structure is init. Since init is free to have sub-threads, we need to check tgid. 🫶

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🎀 SYNOPSIS 🎀

int is_global_init (struct task_struct *tsk );

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🦋 ARGUMENTS 🦋

• tsk — the task structure that's getting checked, aka the main character of this function call 💅

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✨ DESCRIPTION ✨

Check if a task structure is the first user space task the kernel created. That's it, that's the whole job — but it's important, and it ate. 🔥

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🌈 RETURN 🌈

Returns 1 if the task structure is init. Returns 0 otherwise. no cap, those are the only two outcomes 💖

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👑 SEE ALSO 👑

• Kernel file ./include/linux/pid.h
• pid_alive(9)

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— cute little sign-off: brought to you by ./include/linux, October 2026, and the page is_global_init(9) 🫶🎀