STRUCT XE_GUC_CT_SNAPSHOT(9)

💅 NAME

struct xe_guc_ct_snapshot — the GuC command transport (CT) snapshot, bestie. It's literally a lil frozen moment in time of the CT, no cap ✨

🌸 SYNOPSIS 🌸

struct xe_guc_ct_snapshot {
    bool ct_enabled;
    u32 g2h_outstanding;
    struct guc_ctb_snapshot g2h;
    struct guc_ctb_snapshot h2g;
    size_t ctb_size;
    void *ctb;
 };

Okay so quick vibe check: this is a struct, it's defined in the Kernel API Manual, and yeah the closing brace has that one extra space before the semicolon. That's canon. We don't touch it. 🎀

🫶 Members

• ct_enabled — whether the CT was enabled or not, captured right at the moment the snapshot got taken. It's giving "receipts at capture time" 💅
• g2h_outstanding — the G2H outstanding info, also as it was at capture time. Same timestamp energy, different fact. 🦋
• g2h — the G2H CTB snapshot. Yep, the whole snapshot-of-a-CTB situation for the G2H direction. 👑
• h2g — the H2G CTB snapshot. Same deal, other direction. Symmetry ate. 🌈
• ctb_size — the size of the snapshot of the CTB. Numbers girlies rise 🙈
• ctb — the snapshot of the entire CTB. The whole thing. Not a piece, not a sample — the entire CTB, frozen. 🔥

Ngl there's no extra behaviour spelled out here beyond "this is the info at capture time" — so don't go reading secret lore into it. It's a snapshot struct. It snapshots. Periodt. 💀

⭐ SEE ALSO ⭐

If you wanna go deeper (and honestly, obsessed that you do 🫶), go read these:

• ./drivers/gpu/drm/xe/xe_guc_ct_types.h
• struct guc_ctb_info(9)
• struct guc_ctb(9)
• struct guc_ctb_snapshot(9)
• enum xe_guc_ct_state(9)
• struct xe_guc_ct(9)

And that's the whole page, bestie — mwah 💖 This lil drop came from ./drivers/gpu/drm/xe, dated October 2026, from the Kernel API Manual (that's the manual name, folded in near the top like we promised 🎀). Go read some kernel source, ily, bye ✨🧚