__mips_test_...set_bit_lock(9)

💅 __mips_test_...set_bit_lock(9) — Kernel API Manual, bestie edition 🎀

okay so welcome to the Kernel API Manual page for __mips_test_...set_bit_lock(9), and yes the title is literally abbreviated with dots because it's that long, and yes we're gonna get through it together. grab a strawberry drink 🍓, this one's short and sweet.

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✨ NAME ✨

__mips_test_and_set_bit_lock — sets a bit and hands you back its old value, no cap. It's the fallback bestie: it's what gets called by test_and_set_bit_lock() when that function cannot find a faster solution. so like, it's the "fine, we'll do it the honest way" path 🫶

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🌸 SYNOPSIS 🌸

int __mips_test_and_set_bit_lock (unsigned long nr , volatile unsigned long *addr );

that's the whole signature, icon behavior, literally just two args 💅

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🦋 ARGUMENTS 🦋

• nr — the bit to set. like, which one. that one. ⭐
• addr — the address to count from. that's it, that's the description, I don't make the rules 🙈

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👑 SEE ALSO 👑

the kernel file ./arch/mips/lib/bitops.c is where the magic lives, and it's giving main character energy. go meet the whole friend group:

• __mips_set_bit(9)
• __mips_clear_bit(9)
• __mips_change_bit(9)
• __mips_test_and_clear_bit(9)
• __mips_test_and_change_bit(9)

they all live in the same file, they all have the same vibe, it's a whole squad 🌈

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lowkey a tiny page but highkey important — if test_and_set_bit_lock() can't speedrun it, this is who picks up the phone 📞✨

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and that's the whole thing! signing off from ./arch/mips/lib, dated October 2026, in the __mips_test_...set_bit_lock(9) era — ate and left no crumbs, periodt 💖🧚‍♀️