atomic_notif...ain_register(9)

💅 atomic_notifier_chain_register(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ — this one's a little function with main character energy, and honestly? she's simpler than she looks. no cap.

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🎀 NAME 🎀

atomic_notifier_chain_register — adds a notifier to an atomic notifier chain 🦋

like, that's it. that's the whole job. she registers. she slays. periodt.

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✨ SYNOPSIS ✨

int atomic_notifier_chain_register (struct atomic_notifier_head *nh ,
       struct notifier_block *n );

look at her 🥹 two args, one int coming back at you, very demure, very mindful.

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🌸 ARGUMENTS 🌸

• nh — pointer to the head of the atomic notifier chain 🫶 this is the main character of the structure, the place where everything gets added.
• n — the new entry in the notifier chain 💖 this is your little contribution to society, bestie.

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👑 DESCRIPTION 👑

Adds a notifier to an atomic notifier chain ✨

Returns 0 on success, and -EEXIST on error 😭 so like, if it's already there, she's gonna tell you. no cap.

ngl the whole thing is: you give her a chain head, you give her a new entry, she adds it, and she tells you if it went well. simple as. 💅

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🔥 SEE ALSO 🔥

Kernel file ./kernel/notifier.c 📁 plus the whole friend group:

• notifier_call_chain(9)
• notifier_call_chain_robust(9)
• atomic_notifier_chain_register_unique_prio(9)
• atomic_notifier_chain_unregister(9)
• atomic_notifier_call_chain(9)
• atomic_notifier_call_chain_is_empty(9)
• blocking_notifier_chain_register(9)
• blocking_notifier_chain_register_unique_prio(9)
• blocking_notifier_chain_unregister(9)
• blocking_notifier_call_chain(9)
• raw_notifier_chain_register(9)
• raw_notifier_chain_unregister(9)
• raw_notifier_call_chain(9)
• srcu_notifier_chain_register(9)
• srcu_notifier_chain_unregister(9)
• srcu_notifier_call_chain(9)
• srcu_init_notifier_head(9)

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and that's the page!! 🧚 source: ./kernel ⭐ dated October 2026 🎀 mwah, go register something, iykyk 💜