binder_alloc...austive_test(9)

💅 binder_alloc...austive_test(9) 💅

okay so this is a page straight outta the Kernel API Manual bestie, and it's about a kunit test that goes absolutely feral on buffer page allocation. buckle up 🎀

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✨ NAME ✨

binder_alloc_exhaustive_test — Exhaustively test alloc and free of buffer pages.

like, exhaustively exhaustively. no stone unturned, no cap 🔥

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🌸 SYNOPSIS 🌸

void binder_alloc_exhaustive_test (struct kunit *test );

she takes one arg and returns nothing. simple. iconic. periodt ✨

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🦋 ARGUMENTS 🦋

• test — The test context object. that's the kunit stuff she needs to like, actually run and report things 🫶

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💖 DESCRIPTION 💖

okay so here's the whole vibe 👑

first things first: Allocate BUFFER_NUM buffers to cover all page alignment cases. all of them. every single alignment case gets a little buffer bestie of its own 💅

then — and this is the main character moment — free them in all orders possible. like, every permutation. the way that she's out here doing the full combinatorial thing is genuinely so obsessed of her 😭

and while all that's happening, she checks the receipts:

• that pages are correctly allocated ✅
• that pages are put onto lru when buffers are freed ✅
• that pages are freed when binder_alloc_free_page is called ✅

ngl this is a thorough queen. if any of those three things misbehaves, she WILL find it. no hiding 🙈

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/android/tests/binder_alloc_kunit.c — the actual file where all the magic lives, go read it iykyk 📖
• enum buf_end_align_type(9) — the enum bestie herself 💜

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🎀 little reminder that this one lives in the ./drivers/android/tests directory — that's the source, that's the home base 🏠

k bye, mwah 💋 — this page came from ./drivers/android/tests, dated October 2026, and it's giving kernel-testing royalty fr fr 👑⭐