ttm_lru_first_res_or_null(9)

✨ ttm_lru_first_res_or_null(9) ✨

okay bestie, so this one is a little kernel API manual page, like from the Kernel API Manual collection — and honestly? it's short, it's sweet, and it does exactly one (1) thing. let's get into it 💅

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🌸 NAME 🌸

ttm_lru_first_res_or_null — literally just peeks at an lru list and hands you back the first resource on it. that's the whole vibe. 🎀

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🦋 SYNOPSIS 🦋

struct ttm_resource * ttm_lru_first_res_or_null (struct list_head *head
);

yes queen, that's the whole signature. one argument, one pointer back, no drama. ✨

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💖 ARGUMENTS 💖

• head — the list head of the lru list. like, the entry point to the whole thing. you hand it over, it does the looking. 🫶

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⭐ RETURN ⭐

a pointer to the first resource on the lru list — slay — or NULL if there isn't one. that's it. if the list is empty you get NULL, no cap, no surprises. 😭

fr fr, check for that NULL before you dereference, bestie. the function is honest about it but it's still on you. 💀

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👑 SEE ALSO 👑

the kernel file this lives in:

• ./drivers/gpu/drm/ttm/ttm_resource.c

and the whole friend group of related pages, gathered here so you never have to go looking:

• 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_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 whole page, bestie, you ate it up 💅 this little icon came straight out of ./drivers/gpu/drm/ttm, dated October 2026 — go forth and lru 🦋✨