get_n_events_by_type(9)

💅 get_n_events_by_type — a Kernel API Manual (section 9) moment 🎀

okay bestie, so this one lives in the Kernel API Manual, section 9, and it's genuinely such a little icon. it does exactly one thing and it does it slayfully. let's get into it ✨

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🌸 NAME 🌸

get_n_events_by_type — returns maximum number of events per @type 💖

like... that's it. that's the whole job. and she ate.

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🦋 SYNOPSIS 🦋

int get_n_events_by_type (int type );

so you call her, you hand her an int type, and she hands you back an int. simple. clean. no cap. 👑

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🎀 ARGUMENTS 🎀

• type — type of button (EV_KEY, EV_SW) 🫶 like, which kind of button energy are we talking about here

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✨ DESCRIPTION ✨

okay so here's the vibe check: the return value of this function can be used to allocate a bitmap large enough to hold all bits for the given type. 💫

literally that's the whole point — you ask her "how many events we talking for this type?", she tells you, and you go allocate a bitmap that's big enough to hold all the bits for that type. no overflow, no clownery, no "oops I under-allocated" 😭 she's basically your allocation bestie. the main character of "how much memory do I need". 🔥

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👀 SEE ALSO 👀

• Kernel file ./drivers/input/keyboard/gpio_keys.c — go read the source, iykyk 📖
• get_bm_events_by_type(9) 🌈
• gpio_keys_disable_button(9) 🙈
• gpio_keys_enable_button(9) ⭐
• gpio_keys_attr_show_helper(9) 💜
• gpio_keys_attr_store_helper(9) 🍓

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so yeah, that's her. go forth and allocate responsibly, bestie 🧚‍♀️💅

mwah 💋 — brought to you by ./drivers/input/keyboard, dated October 2026, and filed under get_n_events_by_type(9) in the Kernel API Manual. periodt. 👑