STRUCT TTM_LRU_WALK_ARG(9)

💅 struct ttm_lru_walk_arg(9) — like, the Kernel API Manual, bestie 🎀

Okay so picture this: we're deep in the drm/ttm lore, and there's this little struct that's literally the shared glue holding all the BO LRU walk variants together. Common part energy ✨ — it's the friend group's group chat, the thing every variant shows up to. Obsessed.

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✨ NAME ✨

struct ttm_lru_walk_arg — the common part for the variants of BO LRU walk. No cap, that's its whole job 🫶

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🌸 SYNOPSIS 🌸

struct ttm_lru_walk_arg {
    struct ttm_operation_ctx *ctx;
    struct ww_acquire_ctx *ticket;
    bool trylock_only;
    bool sleeping_lock;
};

Look at her. Four fields, zero drama, main character energy 👑

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🦋 Members 🦋

• ctx — a pointer to the struct ttm_operation_ctx. Yeah, she points at the operation context, that's the vibe 💖
• ticket — the struct ww_acquire_ctx, if any. Key words: if any 🙈 sometimes she's just out here being NULL.
• trylock_only — literally only use trylock for locking. That's it. That's the whole field. Trylock only, periodt. 🔥
• sleeping_lock — use sleeping locks even when the ticket is NULL 💤

⚠️ Real talk bestie: trylock_only has precedence over sleeping_lock. So if both are set, trylock_only wins the argument. Not me picking favorites but like… it does 😭

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🌈 SEE ALSO 🌈

Everything's connected, iykyk — go look at the kernel file ./include/drm/ttm/ttm_bo.h and then the whole squad:

• enum ttm_bo_type(9)
• struct ttm_buffer_object(9)
• struct ttm_bo_kmap_obj(9)
• struct ttm_operation_ctx(9)
• struct ttm_lru_walk(9)
• struct ttm_bo_shrink_flags(9)
• ttm_bo_reserve(9)
• ttm_bo_reserve_slowpath(9)
• ttm_bo_move_null(9)
• ttm_bo_unreserve(9)
• ttm_kmap_obj_virtual(9)
• struct ttm_bo_lru_cursor(9)
• ttm_bo_lru_for_each_reserved_guarded(9)

Like, the entire friend group showed up to the function. Slay 💅

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And that's the page, bestie — brought to you from ./include/drm/ttm, dated October 2026, officially filed under struct ttm_lru_walk_arg(9) 🌸 Go forth and walk those LRUs responsibly ✨💜