ttm_resource_intersects(9)

💅 ttm_resource_intersects(9) 💅

okay so welcome to the Kernel API Manual, bestie — this page is all about ttm_resource_intersects(9) and honestly? it's a little vibe check for memory placements. let's get into it 🫶

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✨ NAME ✨

ttm_resource_intersects — test for intersection 🎀

like, does this thing overlap with that thing? that's the whole job.

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🌸 SYNOPSIS 🌸

bool ttm_resource_intersects (struct ttm_device *bdev , struct
ttm_resource *res , const struct ttm_place *place , size_t size );

it returns a bool, so it's giving yes/no energy only. no lore, no extra tea 💅

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🦋 ARGUMENTS 🦋

• bdev — the TTM device structure. your main character device, fr fr.
• res — the resource to test. this is the one under the microscope 🔍
• place — the placement to test. where we're thinking about putting stuff.
• size — how many bytes the new allocation needs. numbers matter, bestie, don't skip this one.

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💖 DESCRIPTION 💖

so the whole gig: test if res intersects with place and size. that's it. that's the function ✨

where it actually gets used? for testing if evictions are valuable or not. like, before you go evicting a whole resource, you check whether it even matters — no cap, that's the point 🙈

it returns true if the res placement intersects with place and size. true means intersection, false means nope, not overlapping. periodt 💅

ngl this is a small function but it's doing important work. don't sleep on it.

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👑 SEE ALSO 👑

the kernel file lives at ./drivers/gpu/drm/ttm/ttm_resource.c — go read the source if you want the full behind-the-scenes 🎬

and here's the whole friend group, all icons, all linked:

• 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_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_init(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 the page!! 💜 this little beauty comes from ./drivers/gpu/drm/ttm and it's dated October 2026, filed under ttm_resource_intersects(9). mwah, go forth and check your intersections 🍓🧚💫