available_idle_cpu(9)

✨ available_idle_cpu(9) ✨

okay so bestie, welcome to another episode of the Kernel API Manual 💅 this one's a lil function called available_idle_cpu and honestly? she's short, she's sweet, she's giving "one job and she does it" energy. 👑

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🌸 NAME 🌸

available_idle_cpu — is a given CPU idle for enqueuing work. that's it, that's the whole vibe check 🦋

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⭐ SYNOPSIS ⭐

bool available_idle_cpu (int cpu );

literally just hand her a cpu and she'll hand you back a bool, no cap ✨

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🎀 ARGUMENTS 🎀

• cpu — the CPU in question. like, the specific one you're being nosy about 🙈 just pass the int, she'll take it from there.

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🔥 RETURN 🔥

• 1 — if the CPU is currently idle. she's free, she's available, she's not doing anything rn 💖
• 0 — otherwise. busy girl, try again later 😭

no in-between, no maybe, no "it's complicated" — just 1 or 0, periodt 💀

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🌈 SEE ALSO 🌈

if you're the kind of person who falls down a rabbit hole (same), go peek at these cuties in the Kernel file ./kernel/sched/sched.h:

• highest_flag_domain(9)
• arch_scale_freq_capacity(9)
• cpufreq_update_util(9)

iykyk 🧚

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and that's the whole page, bestie — no notes, she ate and left no crumbs 🫶 this lil beauty lives over in ./kernel/sched and she's dated October 2026, so mark your calendars and stan responsibly 💜🌸