ttm_device_init(9)

💖 ttm_device_init 💖

okay so bestie, welcome to the ttm_device_init(9) page from the Kernel API Manual — yes it's a kernel function, yes it's giving main character energy in the DRM/GPU world, and yes we're gonna get through it together 🫶

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✨ NAME ✨

ttm_device_init — literally, that's the whole name, the manpage leaves the description blank (iconic of it honestly, no notes 💅)

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🌸 SYNOPSIS 🌸

int ttm_device_init (struct ttm_device *bdev , const struct
       ttm_device_funcs *funcs , struct device *dev , struct address_space
       *mapping , struct drm_vma_offset_manager *vma_manager , unsigned int
       alloc_flags );

so it returns an int, and it takes six whole arguments — she's high maintenance but worth it ✨

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🎀 ARGUMENTS 🎀

• bdev — a pointer to a struct ttm_device to initialize. this is the baby you're bringing to life, lowkey the whole point 🦋
• funcs — the function table for the device. all the callbacks live here, it's giving "let me just hand you my whole personality" 😭
• dev — the core kernel device pointer, used for DMA mappings and allocations. the genuine article, no cosplay 💜
• mapping — the address space to use for this bo. yes, bo. that's the word, we don't question it 🍓
• vma_manager — a pointer to a vma manager. she manages vmas. slay 👑
• alloc_flags — the TTM_ALLOCATION_* flags. there's a whole little family of them and they all start with TTM_ALLOCATION_, periodt 🌈

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💫 DESCRIPTION 💫

so what does it do?? it initializes a struct ttm_device:

that's it. that's the description. the manpage really said "figure it out bestie" and honestly? respect 🙈

like it genuinely just says it initializes a struct ttm_device and then hits you with the colon like something else is coming and then... nothing. the vibe check came back empty but the information is real — that's the function's whole job, and the arguments above tell you what goes where ✨

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🔥 RETURN 🔥

• !0 — failure. so if you get anything that is not zero, something went wrong, and that is your sign to go look at it 😭

note: non-zero means it did NOT slay. that's a failure, clearly stated, no cap.

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/gpu/drm/ttm/ttm_device.c — the source, go read her directly if you want the full lore 💖
• ttm_device_prepare_hibernation(9) — her friend, also worth a look 💅

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and that's the page bestie!! 🦋 no cap, every flag, every pointer and every return value is right there where you need it ⭐

ttm_device_init(9) came from the ./drivers/gpu/drm/ttm source/version, dated October 2026 — so if you're reading this way later, that's where she was born, mwah 💜🎀