STRUCT TTM_POOL(9)

🌸 struct ttm_pool(9) — the pool for all caching and orders 🌸

Okay so bestie, welcome to the tea on struct ttm_pool 💅 this is literally the pool that handles all your caching and orders — main character energy fr fr. It's a kernel struct, so you know it's giving serious business, but don't worry, we're gonna walk through it together 🫶

✨ SYNOPSIS ✨

struct ttm_pool {
    struct device *dev;
    int nid;
    unsigned int alloc_flags;
    struct {
      struct ttm_pool_type orders[NR_PAGE_ORDERS];
    } caching[TTM_NUM_CACHING_TYPES];
 };

🎀 Members 🎀

• dev — the device we're allocating pages for — like, the whole reason we're here, the main character device, periodt 👑
• nid — tells you which numa node to use — pick your fave node, bestie, no cap 🦋
• alloc_flags — the TTM_ALLOCATION_POOL_* flags — these are the vibe flags that control how allocation goes down, iykyk 🔥
• caching — the actual pools for each caching type and order — this is where the magic happens, it's literally an array of struct ttm_pool_type orders[NR_PAGE_ORDERS] indexed by TTM_NUM_CACHING_TYPES, and the way that's structured? obsessed 😭💖

🌈 SEE ALSO 🌈

• Kernel file ./include/drm/ttm/ttm_pool.h
• struct ttm_pool_type(9) — go read that one too, bestie, it's iconic ✨

ngl this struct is lowkey doing a lot of heavy lifting behind the scenes — respect the grind 💀👑

source: ./include/drm/ttm — dated October 2026 — that's the whole manual page bestie, slay 🎀💖✨