STRUCT DRM_GEM_LRU(9)

okay bestie, we're in the Kernel API Manual and this page is struct drm_gem_lru(9) — let's get into it 💅✨

💖 NAME 💖

struct drm_gem_lru — a simple LRU helper. That's the whole vibe, no cap. 🎀

🦋 SYNOPSIS 🦋

Okay so here's the struct, literally:

struct drm_gem_lru {
    long count;
    struct list_head list;
};

🌸 Members 🌸

• count — the total number of backing pages of the GEM objects in this LRU. It's giving page-count main character 🔥
• list — the LRU list. Periodt. 💅

✨ Description ✨

So this little struct is a helper for tracking GEM objects in a given state, and it's here to aid in the driver's shrinker implementation. Lowkey iconic. 🫶

It tracks the count of pages for lockless shrinker.count_objects, and it provides drm_gem_lru_scan for the driver's shrinker.scan_objects implementation. Obsessed. ⭐

⚠️ bestie, important: any access to this kind of object must be done with drm_device::gem_lru_mutex held. Not me stressing this — fr fr, don't skip it. 😭🔒

🌈 SEE ALSO 🌈

Kernel file ./include/drm/drm_gem.h — plus all these besties:

• enum drm_gem_object_status(9)
• struct drm_gem_object_funcs(9)
• struct drm_gem_object(9)
• DRM_GEM_FOPS(9)
• DEFINE_DRM_GEM_FOPS(9)
• drm_gem_get_huge_mnt(9)
• drm_gem_object_get(9)
• drm_gem_object_put(9)
• drm_gem_object_is_shared_for_memory_stats(9)
• drm_gem_is_imported(9)
• drm_gem_gpuva_init(9)
• drm_gem_for_each_gpuvm_bo(9)
• drm_gem_for_each_gpuvm_bo_safe(9)

and that's the page, bestie — sourced from ./include/drm, dated October 2026, struct drm_gem_lru(9) byeee 💖🦋✨