sdma_v4_4_2_ring_test_ib(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v4_4_2_ring_test_ib — Kernel API Manual ✨

okay so bestie, welcome to the sdma_v4_4_2_ring_test_ib(9) page — yes it's a whole mouthful, iykyk, but it's Kernel API Manual territory so we're being ✨technical✨ today 🫶

🌸 NAME 🌸

sdma_v4_4_2_ring_test_ib — literally just testing an IB on the DMA engine, no biggie 💅

🦋 SYNOPSIS 🦋

int sdma_v4_4_2_ring_test_ib (struct amdgpu_ring *ring , long timeout );

look at her. iconic signature. we love a clean prototype ✨

🎀 ARGUMENTS 🎀

  • ring — the amdgpu_ring structure that's holding all your ring info. she's the main character here, be nice to her 👑
  • timeout — the timeout value, measured in jiffies, or MAX_SCHEDULE_TIMEOUT if you're feeling patient (or want to wait, like, forever 😭)

🔥 DESCRIPTION 🔥

so what does she actually do? she tests a simple IB in the DMA ring. that's it. that's the whole vibe 🦋

returns 0 on success — slay, ate, no notes 💖 — and an error on failure, which is your cue to go debug something, ngl 💀

💜 SEE ALSO 💜

the kernel file lives at ./drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c — go read her, she's long but she's worth it 🫶

and now the friend group — the whole squad of related functions, all (9), all iconic:

lowkey that's the whole page, bestie. go forth and test those IBs 🌈💖

mwah 💋 this one came from ./drivers/gpu/drm/amd/amdgpu, dated October 2026 — catch you on the next page, periodt 🎀✨

📦 where this page comes from