radeon_wb_init(9)

📦 version 7.3.1, in nixpkgs unstable

💖 radeon_wb_init(9) — the Kernel API Manual glow-up ✨

okay so bestie, we're in the Linux kernel API manual, and today's main character is radeon_wb_init — like, from the radeon section of the kernel docs, bestie, the whole (9) thing is giving "kernel internals, not your average shell command." 🎀

🌸 NAME 🌸

radeon_wb_init — init the Writeback driver info and allocate memory. that's the whole vibe. lowkey iconic. 💅

✨ SYNOPSIS ✨

int radeon_wb_init (struct radeon_device *rdev );

no cap, that's the whole signature. she takes one pointer and returns an int. periodt. 💜

🦋 ARGUMENTS 🦋

  • rdev — a radeon_device pointer, aka the whole radeon device struct. she needs to know which GPU we're talking about, obviously. 🫶

🌈 DESCRIPTION 🌈

so what does she actually do? bestie, she disables Writeback and frees the Writeback memory — and yes, that's on all asics, every single one, no exceptions. 💀

this one gets used at driver startup, like the getting-ready portion of the driver's morning routine. 💖

and her return value? 0 on success, or a negative -error on failure. so if you see something less than zero, that's your signal that things did not slay. 😭

ngl the NAME line says "init … and allocate memory" while the DESCRIPTION says disable and free — that's what the original page says, so I'm just reporting the facts, bestie. don't come for me 🙈

👑 SEE ALSO 👑

the kernel file herself lives at:

./drivers/gpu/drm/radeon/radeon_device.c

and here's the whole friend group, fr fr — every single one of them:

and that's the page, bestie!! 🧚 source/version: ./drivers/gpu/drm/radeon, dated October 2026 — mwah, tysm for reading, ily, go read your kernel logs 💜✨

📦 where this page comes from