uvd_v4_2_ring_emit_fence(9)

📦 version 7.3.1, in nixpkgs unstable

💖 uvd_v4_2_ring_emit_fence(9) 💖

okay bestie, so this one comes straight out of the Kernel API Manual, and it's a little baby function with a big job: it drops a fence and a trap command onto the ring. two for the price of one, we love a multitasker 💅

✨ NAME ✨

uvd_v4_2_ring_emit_fence — emit an fence & trap command 🎀

(yes, the original really says "an fence" — we're not touching it, it's iconic, it stays fr fr 😭)

🌸 SYNOPSIS 🌸

void uvd_v4_2_ring_emit_fence (struct amdgpu_ring *ring , u64 addr , u64 seq , unsigned flags );

that's it. that's the whole vibe check. no return value, she just does the thing 👑

🦋 ARGUMENTS 🦋

  • ring — an amdgpu_ring pointer. this is the ring she's writing to, the main character of the whole operation ✨
  • addr — the address, periodt. that's the whole description, don't come for me 🫶
  • seq — the sequence number, u64 and everything 💜
  • flags — fence-related flags. unsigned. that's the tea ☕

🧚 DESCRIPTION 🧚

So what does she actually do? bestie, it's literally in the name: write a fence and a trap command to the ring. that's the entire description, no cap. lowkey elegant, highkey mysterious, and we're obsessed 🌈

like, no extra lore, no hidden caveats, no warnings in this one — she's a straightforward girlie. a fence! a trap! onto the ring! slay 💀✨

ngl, this page is short and sweet, so there's not a ton of extra detail to spill — but every single crumb that is here is now in your brain, so you're welcome 🍓

👑 SEE ALSO 👑

first up, the literal source of truth, the kernel file itself:

./drivers/gpu/drm/amd/amdgpu/uvd_v4_2.c

and then the whole squad, her friends, her neighbors, her costars 🫶:

go read them too, iykyk 🔥

and that's the whole page, bestie!! this little gem lives in ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it goes by the name uvd_v4_2_ring_emit_fence(9) — mwah, kiss the ring, see you in the next manpage 💋🎀

📦 where this page comes from