sdma_v4_0_pa...ing_set_wptr(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v4_0_page_ring_set_wptr(9) — like, the whole vibe

Okay bestie, so this one's from the Kernel API Manual, and the function's whole name is sdma_v4_0_page_ring_set_wptr — yes that's a mouthful, we're gonna get through it together 🫶

✨ NAME ✨

sdma_v4_0_page_ring_set_wptr — commit the write pointer. That's it, that's the job. Iconic, lowkey minimal, does exactly one thing 💅

🌸 SYNOPSIS 🌸

void sdma_v4_0_page_ring_set_wptr (struct amdgpu_ring *ring );

Returns nothing (it's a void, bestie, it gives and gives but returns nothing 😭) and takes exactly one thing.

🎀 ARGUMENTS 🎀

  • ring — an amdgpu ring pointer. That's the whole argument. One pointer, one vibe, no cap 🦋

💖 DESCRIPTION 💖

So what does it do? It writes the wptr back to the hardware. And it's for VEGA10+, meaning the newer-gen cards. Fr fr, that's the entire description — commit the write pointer, write it back to the hardware, VEGA10 and up. No notes, it ate 🔥

Ngl there's not a ton of lore here — the manpage keeps it short and sweet, so I'm keeping it short and sweet too. Every detail it gave us is right up there 👆

🌈 SEE ALSO 🌈

Okay this is the main character section, because there are so many siblings. Strap in 🧚

The kernel file lives at ./drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c — that's home base, iykyk.

And here's the whole family reunion:

Like, twenty-eight little friends and they ALL go in the same file. Obsessed with the consistency tbh 👑

Anyway bestie, that's the whole page ✨ This one came from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and the header up top is sdma_v4_0_pa...ing_set_wptr(9) — yeah they truncated the name with an ellipsis, we don't know why, we don't ask, we just slay 💀💖

📦 where this page comes from