DEFINE_IDR(9)

💅 DEFINE_IDR(9) — like, the Kernel API Manual page you actually wanna read 🎀

okay bestie, pull up a chair, because we're talking about DEFINE_IDR — yes, that's the actual name, capital letters and everything, we don't make the rules (well, the kernel does) ✨

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🌸 NAME 🌸

DEFINE_IDR — Define a statically-allocated IDR. no cap, that's literally the whole vibe 💖

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🦋 SYNOPSIS 🦋

DEFINE_IDR (name );

she's short, she's sweet, she's a macro 😌

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🎀 ARGUMENTS 🎀

• name — Name of IDR. that's it. that's the argument. she's named name and she knows what she's about 💅

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✨ DESCRIPTION ✨

so here's the tea 🍓: an IDR defined using this macro is ready for use with no additional initialisation required. like, you don't have to do a single extra thing to her — she comes out the box prepped, hydrated, and main character ready 👑

the one lil' detail: she contains no IDs. empty. zero. an absolutely immaculate, freshly-vacuumed IDR with nothing in it yet 🧚

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🔥 SEE ALSO 🔥

• Kernel file ./include/linux/idr.h
• IDR_INIT(9)
• idr_get_cursor(9)
• idr_set_cursor(9)
• idr sync(9)
• idr_init_base(9)
• idr_init(9)
• idr_is_empty(9)
• idr_preload_end(9)
• idr_for_each_entry(9)
• idr_for_each_entry_ul(9)
• idr_for_each_entry_continue(9)
• idr_for_each_entry_continue_ul(9)
• ida_alloc(9)
• ida_alloc_min(9)
• ida_alloc_max(9)

go read them all, i'll wait, i'm obsessed with your dedication fr fr 🫶

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ngl bestie, that's the entire page. short, iconic, ate and left no crumbs 💀

mwah 💋 — this lil' group chat message came to you from the ./include/linux directory, dated October 2026, and it's signed off as DEFINE_IDR(9) in the Kernel API Manual. byeee, go initialise something 🌈⭐