acpi_bus_notify(9)

💖 acpi_bus_notify(9) — like, the Kernel API Manual entry, bestie 💖

okay so we're doing a manpage from the Kernel API Manual, section 9, and honestly? this one's a little diva — tiny page, big "i only do one thing" energy. but that one thing is lowkey important so let's get into it 🫶

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✨ NAME ✨

acpi_bus_notify — the global system-level (0x00-0x7F) notifications handler 💅

like, that's the whole flex. it's the handler for that range. no cap.

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🌸 SYNOPSIS 🌸

void acpi_bus_notify (acpi_handle handle , u32 type , void *data );

yes the spacing in there is a little crunchy, that's just how the manpage wrote it, leave her alone 😭

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🦋 ARGUMENTS 🦋

• handle — the target ACPI object. this is the thing we're talking about, the main character of the call ✨
• type — the notification type. tells you what kind of notification is happening.
• data — ignored. periodt. it's there, it's in the signature, we do not look at it. 💀

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🎀 DESCRIPTION 🎀

okay so here's the tea: this handler only handles notifications related to device hotplug. that's it. that's the whole scope. if you were hoping it does more — nope, not her job 🙈

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💜 SEE ALSO 💜

• the kernel file ./drivers/acpi/bus.c — like, the actual source, go look 👀
• devm_acpi_install_notify_handler(9)
• acpi_bus_get_primary_device(9)
• acpi_get_first_physical_node(9)
• acpi_device_is_first_physical_node(9)
• acpi_of_match_device(9)
• acpi_set_modalias(9)
• acpi_match_acpi_device(9)
• acpi_match_device(9)
• acpi_bus_find_device_by_name(9)
• acpi_early_init(9)
• acpi_subsystem_init(9)

that's a whole friend group right there honestly, they all hang out in the same part of the kernel 🌈

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reminder bestie: data is ignored. don't build your whole personality around passing something useful in there, she will not be reading it 😌

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and that's the page! pookie this came straight out of ./drivers/acpi, October 2026 edition, delivered to you by the Kernel API Manual herself. slay, stay hydrated, and go read your notify handlers 💅💖🎀🦋