sdma_v7_0_ring_emit_fence(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v7_0_ring_emit_fence(9) 💅

okay so bestie, welcome to the Kernel API Manual — yes we're reading kernel docs together, this is our life now, and honestly? iconic. this one's all about sdma_v7_0_ring_emit_fence, and it's genuinely not that deep. let's go ✨

🌸 NAME 🌸

sdma_v7_0_ring_emit_fence — literally just emit a fence on the DMA ring. that's it. that's the whole job. no cap 💅

🎀 SYNOPSIS 🎀

void sdma_v7_0_ring_emit_fence (struct amdgpu_ring *ring , u64 addr ,
u64 seq , unsigned flags );

look at her. four params, returns nothing (void — she gives nothing back, main character energy fr). take it in. 🦋

💖 ARGUMENTS 💖

  • ring — the amdgpu ring pointer. like, the actual ring you're putting the packet on. your venue, your stage 👑
  • addr — an address. that's the whole description, bestie, the manpage keeps it mysterious 🙈
  • seq — the fence seq number. the sequence-y bit. 🔥
  • flags — fence flags. yes, flags, plural, unspecified. vibe check passed, details withheld 💀

✨ DESCRIPTION ✨

okay so here's what actually happens, and it's kind of a two-parter:

  • she adds a DMA fence packet to the ring — that's the thing that writes the fence seq number 💫
  • she also adds a DMA trap packet — that's the thing that generates an interrupt if needed ⚡

so: write the seq number, and optionally poke the system with an interrupt. one function, two packets, zero drama. ate and left no crumbs 🍓

🫶 SEE ALSO 🫶

the source file herself, living at:

Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c

and her whole friend group (yes, the entire group chat, i'm listing every single one, nobody gets left on read 💜):

like, twenty-five functions. that's a whole party. iykyk 🌈

ngl bestie, this page is short but she's complete — every param, every packet, every cross-reference. no context lost, no crumbs dropped 💀✨

and that's the tea 🎀 this little page comes from ./drivers/gpu/drm/amd/amdgpu, dated October 2026 — that's the source and the version, and honestly? she's timeless. later bestie, go emit some fences 💅🦋⭐

📦 where this page comes from