sdma_v3_0_ring_emit_fence(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v3_0_ring_emit_fence(9) — a Kernel API Manual moment

okay so bestie, we're deep in the kernel API manual rn and this page is literally about sdma_v3_0_ring_emit_fence. yes it's a mouthful, no you're not gonna say it out loud, just vibe with it 🫶

✨ NAME ✨

sdma_v3_0_ring_emit_fence — emit a fence on the DMA ring. that's it, that's the whole thing, and honestly? iconic 💅

🌸 SYNOPSIS 🌸

void sdma_v3_0_ring_emit_fence (struct amdgpu_ring *ring , u64 addr ,
u64 seq , unsigned flags );

look at that signature. so clean. so structured. it's giving "function that knows exactly what it wants" ✨

🎀 ARGUMENTS 🎀

  • ring — amdgpu ring pointer 💫 the ring we're doing the thing to
  • addr — address. yep. it's an address. that's the lore
  • seq — sequence number 🔢 the number the fence is gonna get stamped with
  • flags — fence related flags 🚩 the little flags that are, you know, fence related

🦋 DESCRIPTION 🦋

Add a DMA fence packet to the ring to write the fence seq number and DMA trap packet to generate an interrupt if needed (VI).

okay let me translate that into bestie-speak: we're literally hand-writing two packets into the ring. packet one slaps the fence seq number down 💖 and packet two — the DMA trap packet — pops off to generate an interrupt, but only if needed. conditional interrupt, very demure, very mindful 🙈

and yes, this is the (VI) flavor of the situation, no cap. 🧚

⭐ SEE ALSO ⭐

the source, obviously — Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c 📁

and the whole sdma_v3_0 extended universe, fr fr:

not me reading the entire SEE ALSO list like it's a group chat roster 😭 but fr, every one of those is a real page, go check 'em 💜

and that's the whole page, bestie!! 🌈 this one lives at ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it was a whole moment. slay, stay fenced, and remember: the seq number goes in the ring, periodt 💖✨🎀

📦 where this page comes from