FIELD_GET(9)

✨ FIELD_GET(9) ✨

Okay bestie, this one is from the Kernel API Manual, and it’s literally the tiny glow-up that pulls a bitfield element out of the crowd. 🎀

💅 NAME 💅

FIELD_GET — extract a bitfield element. That’s the whole vibe: extract a bitfield element, no cap. 🫶

🎀 SYNOPSIS 🎀

FIELD_GET (_mask , _reg );

🦋 ARGUMENTS 🦋

• _mask — the shifted mask defining the field’s length and position. Think of it as the little stencil that says where and how long, iykyk. ✨
• _reg — the value of entire bitfield. Yep, the whole thing, the main character. 👑

🌸 DESCRIPTION 🌸

FIELD_GET extracts the field specified by _mask from the bitfield passed in as _reg by masking and shifting it down. That’s it, that’s the tea: mask it, shift it down, and the requested field slides out looking iconic. 💅🔥

🌈 SEE ALSO 🌈

• Kernel file ./tools/include/linux/bitfield.h — that’s the home base, fr fr. 📁
• FIELD_MAX(9)
• FIELD_FIT(9)
• FIELD_PREP(9)

Those three are the friend group you wanna check next, bestie. 🫶✨

mwah 💋 — source/version: ./tools/include/linux · date: October 2026 · page: FIELD_GET(9). 🎀