STRUCT VGASR_PRIV(9)

struct vgasr_priv(9) 💅

okay so bestie, this page comes straight out of the Kernel API Manual, and it's giving kernel-internals main character energy fr fr. We're talking about struct vgasr_priv — the private-data situation for vga_switcheroo. No cap, it's lowkey iconic in a deeply nerdy way. 🫶

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💖 NAME 💖

struct vgasr_priv — vga_switcheroo private data. That's the name, that's the vibe, periodt. ✨

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✨ SYNOPSIS ✨

struct vgasr_priv {
    bool active;
    bool delayed_switch_active;
    enum vga_switcheroo_client_id delayed_client_id;
    struct dentry *debugfs_root;
    int registered_clients;
    struct list_head clients;
    const struct vga_switcheroo_handler *handler;
    enum vga_switcheroo_handler_flags_t handler_flags;
    struct mutex mux_hw_lock;
    int old_ddc_owner;
};

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🌸 Members 🌸

• active — whether vga_switcheroo is enabled. Prerequisite is the registration of two GPUs and a handler. Like, you don't just walk in here without the right setup, okay? 💁‍♀️
• delayed_switch_active — whether a delayed switch is pending. It's the "wait, are we doing this later?" flag. ⏳
• delayed_client_id — client to which a delayed switch is pending. So we know exactly who the delayed switch is waiting on, iykyk. 🎯
• debugfs_root — directory for vga_switcheroo debugfs interface. Debug girlies, this one's for you. 🐛✨
• registered_clients — number of registered GPUs (counting only vga clients, not audio clients). Important distinction bestie, don't mix them up. 🎧🚫
• clients — list of registered clients. The whole little client roster. 📋
• handler — registered handler. The handler that got registered, literally right there in the name. 💅
• handler_flags — flags of registered handler. Flags on flags on flags. 🚩
• mux_hw_lock — protects mux state (in particular while DDC lines are temporarily switched). It's the lock keeping the mux state from getting messy while those DDC lines are in temporary-switch mode. 🔒
• old_ddc_owner — client to which DDC lines will be switched back on unlock. So when unlock happens, we know where the DDC lines are going back to. 🔁

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🦋 Description 🦋

vga_switcheroo private data. Currently only one vga_switcheroo instance per system is supported. That's it — one instance, one system, no sharing, no extra copies, no "but what if we just—" bestie, no. 🙈

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🎀 SEE ALSO 🎀

• Kernel file ./drivers/gpu/vga/vga_switcheroo.c Overview(9)
• struct vga_switcheroo_client(9)
• vga_switcheroo_register_handler(9)
• vga_switcheroo_unregister_handler(9)
• vga_switcheroo_handler_flags(9)
• vga_switcheroo_register_client(9)
• vga_switcheroo_register_audio_client(9)
• vga_switcheroo_client_probe_defer(9)
• vga_switcheroo_get_client_state(9)
• vga_switcheroo_unregister_client(9)
• vga_switcheroo_client_fb_set(9)
• vga_switcheroo_lock_ddc(9)
• vga_switcheroo_unlock_ddc(9)
• Manual switching and manual power control(9)
• vga_switcheroo_process_delayed_switch(9)
• Driver power control(9)
• vga_switcheroo_init_domain_pm_ops(9)

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source/version: ./drivers/gpu/vga · date: October 2026 · page: struct vgasr_priv(9) 🌈✨💖