cpuhp_state...s_cpuslocked(9)

📦 version 7.3.1, in nixpkgs unstable

💖 cpuhp_state...s_cpuslocked(9) 💖

okay bestie, so this is a page straight out of the Kernel API Manual (yes, that's the manual name, we're fancy now 🎀) and it's about one very specific little CPU-hotplug function. it's giving "niche but important" energy. let's get into it 💅

✨ NAME ✨

cpuhp_state_add_instance_nocalls_cpuslocked — adds an instance for a state without invoking the startup callback, and you gotta do it from a region where cpus_read_lock() is already held. no cap, that's the whole vibe 🔥

🦋 SYNOPSIS 🦋

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

🌸 ARGUMENTS 🌸

  • state — the state you're installing this instance for, like picking which shelf it goes on 🧚
  • node — the node for this individual state. one node, one state, main character energy 👑

💜 DESCRIPTION 💜

so this one is literally the same as cpuhp_state_add_instance_nocalls — same behavior, same deal — except it must be invoked from within a region where cpus_read_lock is held. that's the entire difference, and it's not optional, it's a whole requirement 😭 🔒

🌈 SEE ALSO 🌈

kernel file ./include/linux/cpuhotplug.h — that's where the good stuff lives, iykyk 📁

ngl bestie, that "must be invoked from within a cpus_read_lock held region" line is the one bit you cannot skip. respect the lock. periodt 💀✨

and that's a wrap, bestie!! 🫶 this little icon came to you from the ./include/linux directory, dated October 2026, and honestly? she ate. obsessed. bye bestie 💖🎀🦋

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