sdma_v5_0_ring_emit_fence(9)

📦 version 7.3.1, in nixpkgs unstable

💖 sdma_v5_0_ring_emit_fence(9) 💖

okay so bestie, welcome to the Kernel API Manual — this one's a lil function from the amdgpu fam and honestly she's giving quiet-but-essential, y'know? like she doesn't look dramatic but she's out here putting fences on DMA rings and that's lowkey iconic 💅

✨ NAME ✨

sdma_v5_0_ring_emit_fence — emit a fence on the DMA ring 🎀

like, she literally emits a fence. on the ring. periodt.

🌸 SYNOPSIS 🌸

void sdma_v5_0_ring_emit_fence (struct amdgpu_ring *ring , u64 addr ,
u64 seq , unsigned flags );

she takes four things and returns nothing — a void queen, no notes 👑

🦋 ARGUMENTS 🦋

  • ring — the amdgpu ring pointer 💫 (this is the ring she's gonna write on, main character energy fr)
  • addr — the address 📍 (where the fence stuff goes down, iykyk)
  • seq — the sequence number 🔢 (the number that gets written, very important, don't lose her)
  • flags — fence related flags 🚩 (all the flaggy little details about the fence, as one does)

🌈 DESCRIPTION 🌈

okay so here's the vibe: she adds a DMA fence packet to the ring so the fence seq number gets written, and she adds a DMA trap packet to generate an interrupt if needed 🔥

and this whole thing is specifically for NAVI10 🫶 (that's the hardware she's hyped for, no cap)

note bestie: the interrupt only happens if needed — she's not out here interrupting for fun, she has standards 💅

⭐ SEE ALSO ⭐

the kernel file where the magic lives:

./drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c

and the whole bestie squad of related functions — every single one, in order, because we do not leave anyone out 💖:

and that's the whole page bestie!! 🧚✨ this lives under ./drivers/gpu/drm/amd/amdgpu, dated October 2026, manual name sdma_v5_0_ring_emit_fence(9) — go forth and fence responsibly 💜

📦 where this page comes from