__mips_test_and_change_bit(9)

💅 NAME

okay bestie, this is the Kernel API Manual page for __mips_test_and_change_bit(9), and the whole vibe is: it changes a bit and returns its old value. That's the main character move. It's called by test_and_change_bit() if it cannot find a faster solution. Periodt.

✨ SYNOPSIS ✨

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

No cap, that's the signature: a bit number nr and a pointer to a volatile unsigned long called addr.

🎀 ARGUMENTS 🎀

• nr — bit to change. Which bit, bestie? This one.
• addr — address to count from. That's literally what the page says.

🔗 SEE ALSO 🔗

Kernel file ./arch/mips/lib/bitops.c, plus these iconique friends:

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

okay that's the whole thing 🫶 — source/version is ./arch/mips/lib, dated October 2026, and the page is __mips_test_and_change_bit(9). slay.