DEFINE_DRM_GEM_FOPS(9)

💅 DEFINE_DRM_GEM_FOPS(9) — like, the Kernel API Manual one, bestie 🎀

okay so picture this: you're deep in the kernel, you're writing a GEM driver, and you need file operations. bestie. do NOT hand-write that. this macro has you covered. it's from the Kernel API Manual and it's lowkey iconic ✨

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🌸 NAME 🌸

DEFINE_DRM_GEM_FOPS — the macro that generates file operations for GEM drivers, no cap 🫶

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✨ SYNOPSIS ✨

DEFINE_DRM_GEM_FOPS (name );

like, literally just that 🎀

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🦋 ARGUMENTS 🦋

• name — the name you want for the generated structure. that's it. that's the whole argument. slay 💅

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💖 DESCRIPTION 💖

okay so here's the tea ☕ — this macro autogenerates a suitable struct file_operations for GEM based drivers, and you can just assign it straight to drm_driver.fops. it's giving "let the macro do the boring part so you can be the main character" energy 👑

but — and this is the important part — this structure cannot be shared between drivers. like, not even a little. why? because it contains a reference to the current module using THIS_MODULE. so if you try to be cute and share it, it's gonna break, and not in a fun way 😭

also note: the declaration is already marked as static. so if you think you need 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, that's not a maybe, that's a when 💀

🚨 real talk: don't fight the static. don't go hunting for a non-static workaround. the macro is right, you're wrong, and the THIS_MODULE reference will absolutely take the fall for it. periodt.

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🌈 SEE ALSO 🌈

the whole squad, fr fr — kernel file ./include/drm/drm_gem.h, plus:

• enum drm_gem_object_status(9)
• struct drm_gem_object_funcs(9)
• struct drm_gem_lru(9)
• struct drm_gem_object(9)
• DRM_GEM_FOPS(9)
• drm_gem_get_huge_mnt(9)
• drm_gem_object_get(9)
• drm_gem_object_put(9)
• drm_gem_object_is_shared_for_memory_stats(9)
• drm_gem_is_imported(9)
• drm_gem_gpuva_init(9)
• drm_gem_for_each_gpuvm_bo(9)
• drm_gem_for_each_gpuvm_bo_safe(9)

go read them. iykyk 🧚💜

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okay that's the whole page!! mwah 💋 this one lives over in ./include/drm, dated October 2026, and it's page DEFINE_DRM_GEM_FOPS(9) of the Kernel API Manual — go forth and generate those fops, bestie, you've got this 🍓🫶⭐