xe_guc_captu...etnullheader(9)

💖 xe_guc_capture_getnullheader(9) — the kernel API manual page, bestie edition 🎀

okay so real talk, this is a page from the Kernel API Manual, and the title is literally xe_guc_capture_getnullheader(9) — yes the header line truncates it all cute like xe_guc_captu...etnullheader(9), that's just how it renders, don't panic 💅. It lives in ./drivers/gpu/drm/xe and it's all about getting a null list for register capture. slay.

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✨ NAME ✨

xe_guc_capture_getnullheader — Get a null list for register capture 🦋

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🌸 SYNOPSIS 🌸

int xe_guc_capture_getnullheader (struct xe_guc *guc , void **outptr ,
       size_t *size );

like, that's the whole signature, no cap 👑

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🎀 ARGUMENTS 🎀

• guc — The GuC object 💜 (yes, the GuC object, main character energy)
• outptr — Point to cached register capture list 🌈
• size — Point to the size ⭐

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💫 DESCRIPTION 💫

so basically, this function will alloc for a null list for register capture. that's it, that's the vibe. it's giving "small but essential" 🫶

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🔥 RETURN 🔥

0 on success, or a negative error code on failure 😭 — so like, check it, bestie, don't just vibe past the return value.

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👑 SEE ALSO 👑

• Kernel file ./drivers/gpu/drm/xe/xe_guc_capture.c 📁
• xe_guc_capture_getlistsize(9)
• xe_guc_capture_getlist(9)
• xe_guc_capture_ads_input_worst_size(9)
• Init, G2H-event and reporting flows for GuC-error-capture(9)
• xe_engine_manual_capture(9)
• xe_engine_snapshot_print(9)
• xe_guc_capture_get_matching_and_lock(9)
• xe_engine_snapshot_capture_for_queue(9)

like, go read those too, iykyk 💀✨

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ngl if you got here by accident, hi, welcome, this is the register-capture corner of the kernel and everyone here is obsessed with lists 🍓

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mwah 💋 this page came from ./drivers/gpu/drm/xe, dated October 2026, and the footer repeats xe_guc_captu...etnullheader(9) because the kernel really said "abbreviate it and move on". bye bestie, go capture some registers 🧚💖