drm_mm_init(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_mm_init — the Kernel API Manual, but make it a vibe ✨

okay so bestie, welcome to drm_mm_init 🎀 this is the little function that spins up a drm-mm allocator, and honestly? it's giving "small but crucial" energy. main character behavior fr fr 👑

✨ NAME ✨

drm_mm_init — initialize a drm-mm allocator 🧚

like literally, it sets the whole thing up. no cap.

🌸 SYNOPSIS 🌸

void drm_mm_init (struct drm_mm *mm , u64 start , u64 size );

that's the whole thing, gorgeous. copy it exactly, don't get creative with the spacing 😭

💖 ARGUMENTS 💖

  • mm — the drm_mm structure to initialize 💫 this is your baby, the thing you're bringing to life.
  • start — start of the range managed by mm 🌈 where the story begins.
  • size — end of the range managed by mm 🫶 yes, the docs say "end" for size, and we're not gonna argue with the docs, we're just gonna report it faithfully. iykyk 💅

🦋 DESCRIPTION 🦋

⚠️ note that mm must be cleared to 0 before calling this function. not "should", not "maybe", must. zero it out first or it's gonna be a whole mess 😭💀

that's the tea. clear to 0, then call. periodt. 🍓

👑 SEE ALSO 👑

go read these next, bestie, they're all linked and they're all iconic in their own way:

and that's a wrap on the drm_mm_init lore 💅✨ this little page lives out of ./drivers/gpu/drm, stamped October 2026 — so like, future vibes only, we love to see it 🌸🦋 bye bestie, go clear your struct to 0 💖

📦 where this page comes from