amdgpu_debugfs_gfxoff_write(9)

📦 version 7.3.1, in nixpkgs unstable

💅 amdgpu_debugfs_gfxoff_write(9) — the kernel API manual, but make it make sense

okay so bestie, this is a page straight out of the Kernel API Manual — like, the actual manual, section 9, and the star of the show is amdgpu_debugfs_gfxoff_write. she's a little function with one job and honestly? she ate. let's get into it 🫶

✨ NAME ✨

amdgpu_debugfs_gfxoff_write — literally just enable/disable GFXOFF. that's it. that's the whole vibe. 💅

🦋 SYNOPSIS 🦋

ssize_t amdgpu_debugfs_gfxoff_write (struct file *f , const char __user
*buf , size_t size , loff_t *pos );

so she takes a struct file *f, a const char __user *buf, a size_t size and a loff_t *pos, and she hands you back a ssize_t. iconic signature, no notes. ✨

🎀 ARGUMENTS 🎀

  • f — the open file handle. like, the file is already open, this is just the handle to it. bestie is holding the door for you 🚪
  • buf — the user buffer you're writing data from. yes, user buffer, so be normal about it please 🙈
  • size — number of bytes to write. how much you're writing, fr fr.
  • pos — the offset to seek to. where you're landing in the file, lowkey.

🔥 DESCRIPTION 🔥

okay so here's the whole plot: you write a 32-bit zero to disable GFXOFF, or a 32-bit non-zero to enable it.

that's the entire function. zero = off, non-zero = on. no cap, that's it. the way that a single 32-bit value is running the whole show 💀

🌈 SEE ALSO 🌈

the kernel file this lives in, first of all:

  • Kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c

and then the whole friend group — these are all (9) pages, go say hi 👋:

🫶 and that's the page!! sourced from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and she goes by amdgpu_debugfs_gfxoff_write(9) — mwah, slay, periodt 💖
📦 where this page comes from