sdma_v4_0_ring_test_ib(9)

📦 version 7.3.1, in nixpkgs unstable

✨ sdma_v4_0_ring_test_ib ✨

okay so bestie, we're in the kernel API manual (section 9, the fun one) and today's main character is sdma_v4_0_ring_test_ib — the little function that just wants to know: does this DMA ring actually work? 🎀

💅 SYNOPSIS

int sdma_v4_0_ring_test_ib (struct amdgpu_ring *ring , long timeout );

literally the whole signature, no cap. 🫶

🌸 ARGUMENTS

  • ring — the amdgpu_ring structure that's holding all the ring information. she's the one carrying the vibes, we just pass her along 💖
  • timeout — the timeout value, measured in jiffies, or MAX_SCHEDULE_TIMEOUT if you're feeling patient (or chaotic, your call) ⏳

⭐ DESCRIPTION

So what does she do? She tests a simple IB in the DMA ring, specifically for VEGA10. That's it, that's the job. 🦋

And the results? Super simple:

  • Returns 0 on success — slay, iconic, we love to see it 👑
  • Returns an error on failure — and honestly? she's telling you something's wrong, listen to her 😭
no guessing here bestie, that's literally all the manpage says — but fr fr, a 0 is the vibe check passing 💀

🌈 SEE ALSO

Like, the whole friend group. Kernel file first:

  • Kernel file ./drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

Then the crew, all of them, in order because we don't skip anyone in this house:

🧚 sign-off

that's the page bestie! 💜 it lives in ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it's page sdma_v4_0_ring_test_ib(9) of the Kernel API Manual. go test that ring, periodt. ✨🔥

📦 where this page comes from