cik_sdma_ring_emit_fence(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cik_sdma_ring_emit_fence(9) 💅

okay bestie, welcome to the Kernel API Manual — yes, that's the manual name, and yes, we're reading a GPU driver page together, this is our bonding activity now 🫶

✨ NAME ✨

cik_sdma_ring_emit_fence — the function that emits a fence on the DMA ring. that's it, that's the whole vibe. it drops a fence, it slays, it goes home 💅

🎀 SYNOPSIS 🎀

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

she takes four arguments and returns void, so like… she doesn't even give you a return value. no notes. icon behavior honestly 👑

🌸 ARGUMENTS 🌸

  • ring — amdgpu ring pointer. this is the ring bb, the whole reason we're here 💖
  • addr — address. just… the address. the place. the location. we move 🦋
  • seq — sequence number. the number in question 🔢
  • flags — fence related flags 🚩 (fence-adjacent flags specifically, not just any random flags, okay??)

🔥 DESCRIPTION 🔥

so what she actually does: she adds a DMA fence packet to the ring so that the fence seq number gets written out ✍️ — and then she also adds a DMA trap packet to generate an interrupt if needed ⚡

and that's for CIK btw. iykyk 😌

that's the whole thing. tiny function, big main character energy. no cap 💯

🌈 SEE ALSO 🌈

the kernel file lives at ./drivers/gpu/drm/amd/amdgpu/cik_sdma.c — go read the source bestie, it's giving lore 📖✨

and here's the whole friend group, all the cik_sdma girlies and their neighbors:

okay and one last lil sign-off because we're keeping the receipts 🧾💜: this page comes from the source tree at ./drivers/gpu/drm/amd/amdgpu, she's dated October 2026, and her full name is cik_sdma_ring_emit_fence(9). stan. periodt. 🎀✨

📦 where this page comes from