STRUCT HOST1X_BO_CACHE(9)

✨ struct host1x_bo_cache(9) ✨

okay bestie, welcome to the Kernel API Manual entry for struct host1x_bo_cache — it’s giving buffer object cache realness and I’m obsessed. Let’s get into it 💅

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💖 NAME 💖

struct host1x_bo_cache — host1x buffer object cache 🎀

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✨ SYNOPSIS ✨

struct host1x_bo_cache {
    struct list_head mappings;
    struct mutex lock;
 };

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🫶 Members 🫶

• mappings — list of mappings. literally the list, bestie 💖
• lock — synchronizes accesses to the list of mappings 🔐

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💅 Description 💅

Note that entries are not periodically evicted from this cache and instead need to be explicitly released. No passive cleanup era, sorry — you gotta let them go on purpose 😭

This is used primarily for DRM/KMS where the cache’s reference is released when the last reference to a buffer object represented by a mapping in this cache is dropped. periodt 🦋

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👀 SEE ALSO 👀

• Kernel file ./include/linux/host1x.h
• struct host1x_client_ops(9)
• struct host1x_client(9)
• struct host1x_bo_ops(9)
• struct host1x_driver(9)

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xoxo, your kernel bestie 💖 — source/version: ./include/linux; date: October 2026; page: struct host1x_bo_cache(9) 🌸