DEFINE_DRM_GEM_DMA_FOPS(9)

📦 version 7.3.1, in nixpkgs unstable

💅 DEFINE_DRM_GEM_DMA_FOPS 💅

okay so real talk, this is a page from the Kernel API Manual, and it's about one lil macro that does a shocking amount of heavy lifting. bestie, if you're writing a DMA-based DRM driver, this is your girl. ✨

🌸 NAME 🌸

DEFINE_DRM_GEM_DMA_FOPS — it's a macro that generates file operations for DMA drivers, no cap 🎀

🦋 SYNOPSIS 🦋

DEFINE_DRM_GEM_DMA_FOPS (name );

like literally that's it, that's the whole call 💀

✨ ARGUMENTS ✨

  • name — the name you wanna give the generated structure. you pick it, it's yours, name it something cute 🫶

🔥 DESCRIPTION 🔥

so what this macro actually does: it autogenerates a perfectly suitable struct file_operations for DMA based drivers, and then you can just assign that thing straight to drm_driver.fops. it's giving "I made this for you" energy. literally.

⚠️ okay but listen — this structure cannot be shared between drivers. like, at all. because it contains a reference to the current module using THIS_MODULE, and sharing it would be a whole mess. don't do it. 🙈

also note the declaration is already marked as static. so if you find yourself needing a non-static version of this, ngl bestie… you're probably doing it wrong, and you will break the THIS_MODULE reference by accident. like by accident accident. consider this your vibe check. 💀

👑 SEE ALSO 👑

go check out the kernel file ./include/drm/drm_gem_dma_helper.h — and the struct squad, all of them, in order, no skipping:

like the whole friend group fr fr 🌈

and that's the tea 🍓 this page lives in ./include/drm, dated October 2026 — so if you're reading this in the future, hiiii, hope your kernel compiled first try 💜 mwah, study hard, slay ur driver, bye bestie 💅✨

📦 where this page comes from