kmemleak_free_percpu(9)

📦 version 7.3.1, in nixpkgs unstable

💖 kmemleak_free_percpu 💖

okay so bestie, welcome to the Kernel API Manual ✨ this one's a lil function from the kernel's memory-leak detective squad, and honestly? she's short but she matters. 🎀

🌸 NAME 🌸

kmemleak_free_percpu — unregister a previously registered __percpu object 🧚

like, you know how you have to tell kmemleak when you make something? yeah, this is the breakup text for when it's gone. 💅

✨ SYNOPSIS ✨

void __ref kmemleak_free_percpu (const void __percpu *ptr );

that's it. that's the whole vibe check. one pointer in, nothing out, void queen 👑

🦋 ARGUMENTS 🦋

  • ptr — the __percpu pointer to the beginning of the object 🫶 fr fr, it's gotta point at the start, not somewhere in the middle — she's not doing the extra math for you.

🔥 DESCRIPTION 🔥

so here's the tea ☕ — this function gets called from the kernel percpu allocator whenever an object (a memory block, bestie, actual memory) is freed, specifically by free_percpu. 💀

basically: when percpu memory dips out, kmemleak gets the memo so it doesn't sit there accusing your code of a leak that isn't even real. iconic behaviour, no notes. 👑

🌈 SEE ALSO 🌈

Kernel file ./mm/kmemleak.c — go read the source if you're feeling main character energy today 📖✨

the whole kmemleak friend group, assembled 🫶💜

and that's the page, bestie!! 💖 brought to you by ./mm, dated October 2026, and yes the header said kmemleak_free_percpu(9) the whole time — slay, go free some percpu memory responsibly 🌸✨🎀

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