sdma_v4_0_ring_set_wptr(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v4_0_ring_set_wptr — Kernel API Manual ✨

okay bestie, buckle up, because today we're looking at sdma_v4_0_ring_set_wptr(9) from the Kernel API Manual. yes that's a whole lot of letters and underscores but trust me, it's giving "niche but iconic" 🎀

🌸 NAME 🌸

sdma_v4_0_ring_set_wptr — commit the write pointer. that's it, that's the whole vibe. it commits. it writes. she's a doer 💅

✨ SYNOPSIS ✨

void sdma_v4_0_ring_set_wptr (struct amdgpu_ring *ring );

like, she takes one argument, she returns nothing (void — very demure, very mindful), and she does the thing. no cap 🔥

🦋 ARGUMENTS 🦋

  • ring — an amdgpu ring pointer. that's your ring bestie, the whole reason we're here 🫶

💖 DESCRIPTION 💖

so what does she actually do? bestie. she writes the wptr back to the hardware. and not just any hardware — we're talking VEGA10+ only, so if you're on older silicon this function is literally not for you, sorry not sorry 🙈

like... she's out here committing the write pointer to the actual physical hardware. main character energy fr fr 👑

🌈 SEE ALSO 🌈

the whole fam is in the kernel file right here:

./drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

and here's the full bestie squad, all the related functions you might want to check out:

iykyk, that's a lot of related functions but honestly? every single one of them ate 💀✨

ngl this whole page lives in ./drivers/gpu/drm/amd/amdgpu and it's dated October 2026 — so mark your calendars bestie, future us is gonna need this. 🗓️💜

and that's the whole page, bestie! sdma_v4_0_ring_set_wptr(9) from the Kernel API Manual, version-dated October 2026, living its best life in ./drivers/gpu/drm/amd/amdgpu. slay, go commit that write pointer 🎀💅✨

📦 where this page comes from