drm_gem_object_init(9)

📦 version 7.3.1, in nixpkgs unstable

✨ drm_gem_object_init(9) ✨

okay so this is a page straight out of the Kernel API Manual, and honestly? it's a little baddie. it's the function that gives a shmem-backed GEM object its whole personality. let's get into it 💅

🌸 NAME 🌸

drm_gem_object_init — initialize an allocated shmem-backed GEM object

literally the glow-up moment for a GEM object that already exists. no cap.

🦋 SYNOPSIS 🦋

int drm_gem_object_init (struct drm_device *dev , struct drm_gem_object
*obj , size_t size );

she returns an int, bestie. remember that. 📌

🎀 ARGUMENTS 🎀

  • dev — the drm_device this object is getting initialized for. like, which device is adopting this baby 🫶
  • obj — the drm_gem_object you're initializing. she's already allocated, you're just giving her the setup ✨
  • size — the object size. how big she is. the measurements are important 🍓

🌈 DESCRIPTION 🌈

okay so picture this: you've got an already allocated GEM object of a specified size, right? and you're like "bestie, you need shmfs backing store." and that is exactly what this function does — it initializes that object with shmfs backing store. iconic behavior, honestly.

and the pro move? if you want a huge mountpoint, you can call drm_gem_huge_mnt_create beforehand. that's it. that's the whole tip. iykyk 🔥

no seriously, drm_gem_huge_mnt_create comes beforehand. do the prerequisite first, main character energy requires order 💀

👑 SEE ALSO 👑

she has so many friends, it's giving group chat with 39 members and everyone's typing:

Kernel file ./drivers/gpu/drm/drm_gem.c

like i said. a whole friend group. every single one of them linked, every single one of them slay 💜

🧚 sign-off 🧚

that's the whole page, bestie!! this one lives in the kernel tree at ./drivers/gpu/drm, dated October 2026, and it's part of the Kernel API Manual — so go forth and initialize your shmem-backed GEM objects responsibly. 🎀✨🦋

periodt. 💅

📦 where this page comes from