percpu_ref_put(9)

🌸 NAME 🌸

okay bestie, this is percpu_ref_put(9) from the Kernel API Manual — literally the page about decrementing a percpu refcount. 💖

✨ SYNOPSIS ✨

void percpu_ref_put (struct percpu_ref *ref );

🎀 ARGUMENTS 🎀

• ref — the percpu_ref to put. That's the one you're handing over to this function. 🫶

💅 DESCRIPTION 💅

so what it does: it decrements the refcount, and if that count hits 0, it calls the release function — the one that was passed to percpu_ref_init. no cap, that's the whole vibe. ✨

⚠️ safety note, bestie: this function is safe to call as long as ref is between init and exit. outside that window? don't. 💀

🔥 SEE ALSO 🔥

the Kernel file ./include/linux/percpu-refcount.h is right there for you, and these related pages are the whole friend group:

• percpu_ref_kill(9)
• percpu_ref_get_many(9)
• percpu_ref_get(9)
• percpu_ref_tryget_many(9)
• percpu_ref_tryget(9)
• percpu_ref_tryget_live_rcu(9)
• percpu_ref_tryget_live(9)
• percpu_ref_put_many(9)
• percpu_ref_is_dying(9)

mwah 💋 sign-off: this page lives in ./include/linux, dated October 2026, and it's percpu_ref_put(9). periodt. 👑