cpuhp_state_remove_instance(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cpuhp_state_remove_instance 💅

Okay bestie, this is a page from the Kernel API Manual — yes, that Kernel API Manual, the one with the hotplug lore — and today's main character is cpuhp_state_remove_instance. Buckle up 🎀

✨ NAME ✨

cpuhp_state_remove_instance — literally removes a hotplug instance from a state and invokes the teardown callback. Two things. One function. Slay. 💅

🌸 SYNOPSIS 🌸

int cpuhp_state_remove_instance (enum cpuhp_state state , struct
hlist_node *node );

Bestie it returns an int. That's the whole vibe check up top. 🦋

🧚 ARGUMENTS 🧚

  • state — the state you're yanking this instance out of. That's the one. The state from which the instance is removed. 🌈
  • node — the node for this individual state. Like, this specific instance's node, not a group thing. 🙈

💖 DESCRIPTION 💖

So what it actually does: it removes the instance, and then it invokes the teardown callback on the online cpus which have already reached state. That's it. That's the whole deal, no cap. 🔥

Fr fr: the callback only hits the online cpus that have already reached state — that detail is doing a lot of work, don't skip it 👑

🌟 SEE ALSO 🌟

The whole friend group, honestly — kernel file ./include/linux/cpuhotplug.h plus:

Like, the entire cpuhotplug extended universe. Obsessed. 💜

Alright bestie, that's the page 🫶 — sourced from ./include/linux, dated October 2026, under the title cpuhp_state_remove_instance(9). Go forth and remove those instances, icon behavior only 👑✨

📦 where this page comes from