vcn_v1_0_dec...g_emit_fence(9)

📦 version 7.3.1, in nixpkgs unstable

💅 vcn_v1_0_dec_ring_emit_fence — Kernel API Manual ✨

okay bestie, welcome to the Kernel API Manual entry for vcn_v1_0_dec_ring_emit_fence(9) — yes the header really does squish it down to vcn_v1_0_dec...g_emit_fence(9) and no, we don't know why either, it's just giving abbreviation energy 🎀 she's a real function and she's here to drop a fence and a trap into a ring, iykyk.

🌸 NAME 🌸

vcn_v1_0_dec_ring_emit_fence — literally just emit an fence & trap command 🫶 (yes, "an fence", the original said it like that, we're keeping it, iconic).

✨ SYNOPSIS ✨

void vcn_v1_0_dec_ring_emit_fence (struct amdgpu_ring *ring , u64 addr ,
u64 seq , unsigned flags );

no return value, no drama, just vibes and side effects 💅

🦋 ARGUMENTS 🦋

  • ring — an amdgpu_ring pointer, aka the ring you're about to write into. main character energy right here 👑
  • addr — the address. that's it, that's the whole description, and honestly? respect for the brevity 😭
  • seq — the sequence number, the little number that makes the fence make sense fr fr
  • flags — the fence related flags 🌈 (fence-related, specifically, so pls don't go putting random unrelated flags in there)

🔥 DESCRIPTION 🔥

Write a fence and a trap command to the ring. That's the whole thing, bestie — no cap, that is genuinely the entire documented behaviour. You hand it a ring, an address, a sequence number, and some fence flags, and it goes and writes a fence command and a trap command into said ring. Slay 💖

lowkey the shortest description ever but we're not adding lore that isn't there — the manpage said it, so it's canon 🧚

💜 SEE ALSO 💜

Kernel file ./drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c — go peek at her source if you want the full tea 🍓

and that's the whole page, bestie 💫 straight from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, page vcn_v1_0_dec...g_emit_fence(9) — go forth and emit those fences, you absolute icon 🎀💅🫶

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