ttm_kmap_ite...near_io_init(9)

💅 NAME 💅

ttm_kmap_iter_linear_io_init — bestie, this one initializes an iterator for linear io memory ✨

(also hi, you're reading the Kernel API Manual, welcome to the group chat 🫶)

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🌸 SYNOPSIS 🌸

struct ttm_kmap_iter * ttm_kmap_iter_linear_io_init (struct
ttm_kmap_iter_linear_io *iter_io , struct ttm_device *bdev , struct
ttm_resource *mem );

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🎀 ARGUMENTS 🎀

• iter_io — the iterator you're initializing. it's the main character here 💅
• bdev — the TTM device. your devicey device, ngl 🦋
• mem — the ttm resource that represents the iomap 👑

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✨ DESCRIPTION ✨

okay so real talk: this function is for internal TTM use only 🙈 like, if you're not TTM, this is not your moment, bestie.

what it does is set up a memcpy kmap iterator pointing at a linear chunk of io memory. that's it, that's the vibe. lowkey iconic, highkey specific 💖

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🔥 RETURN 🔥

you get back a pointer to the embedded struct ttm_kmap_iter — or an error pointer on failure 😭 (so like… vibe check your return value, fr fr)

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🦋 SEE ALSO 🦋

the kernel file lives at ./drivers/gpu/drm/ttm/ttm_resource.c — go say hi, it's literally right there 🧚

and the whole friend group:

• ttm_resource_cursor_init(9)
• ttm_resource_cursor_fini(9)
• ttm_lru_bulk_move_init(9)
• ttm_lru_bulk_move_fini(9)
• ttm_lru_bulk_move_tail(9)
• ttm_resource_init(9)
• ttm_resource_fini(9)
• ttm_resource_try_charge(9)
• ttm_resource_intersects(9)
• ttm_resource_compatible(9)
• ttm_resource_manager_init(9)
• ttm_resource_manager_usage(9)
• ttm_resource_manager_debug(9)
• ttm_resource_manager_first(9)
• ttm_resource_manager_next(9)
• ttm_lru_first_res_or_null(9)
• ttm_kmap_iter_iomap_init(9)
• Linear io iterator(9)
• ttm_kmap_iter_linear_io_fini(9)
• ttm_resource_manager_create_debugfs(9)
• ttm_resource_manager_dmem_reclaim(9)
• ttm_resource_manager_set_dmem_region(9)

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and that's a wrap, bestie 🌈💜

this page came from ./drivers/gpu/drm/ttm, dated October 2026, and it goes by ttm_kmap_ite...near_io_init(9) (yes the title got truncated, no it's not a typo, the manual really said that 💀). periodt. 🎀