find_next_clump8(9)

📦 version 7.3.1, in nixpkgs unstable

✨ find_next_clump8(9) ✨

okay so this is a page from the Kernel API Manual (yes, the (9) one, we're in kernel-land bestie 💅) and it's literally about finding the next 8-bit clump with set bits in a memory region. it's giving "bitmap scavenger hunt" and honestly? kinda iconic.

🌸 NAME 🌸

find_next_clump8 — find next 8-bit clump with set bits in a memory region 🫶

🦋 SYNOPSIS 🦋

unsigned long find_next_clump8(unsigned long *clump,
                               const unsigned long *addr,
                               unsigned long size,
                               unsigned long offset);

🎀 ARGUMENTS 🎀

  • clump — the location to store a copy of the found clump 👑 like, this is where the good news goes
  • addr — the address to base the search on 🔍 your starting point, your main character address
  • size — bitmap size in number of bits 📏 yes, in bits, not bytes, don't come for me
  • offset — the bit offset at which to start searching 🏁 begin here, queen

💖 DESCRIPTION 💖

So what does it do?? It returns the bit offset for the next set clump, and the found clump value gets copied to the location pointed to by clump ✨ two-for-one deal, no cap.

and if no bits are set? it literally returns size. that's the whole vibe. empty bitmap, nothing found, you get size back, go home 💀

🌈 SEE ALSO 🌈

Kernel file ./include/linux/find.h:

like, that's the whole friend group right there 🧚 the bit-finding fam. go say hi.

fr fr: the found clump value lands in clump, the bit offset is what you get back, and size is your "nothing to see here" answer 🍓

and that's the page!! tysm for reading, bestie 💜 this one came from ./include/linux, dated October 2026, and it's filed under find_next_clump8(9) — slay, periodt, go find yourself a clump 🌟

📦 where this page comes from