sdma_v2_4_ring_test_ib(9)

📦 version 7.3.1, in nixpkgs unstable

💅 sdma_v2_4_ring_test_ib — like, the Kernel API Manual bestie ✨

okay so this is a page from the Kernel API Manual (sdma_v2_4_ring_test_ib(9)), and honestly? it's a little guy with one job and it does it. let's get into it 🫶

✨ NAME ✨

sdma_v2_4_ring_test_ib — bestie, it tests an IB on the DMA engine. that's the whole vibe. 🦋

🎀 SYNOPSIS 🎀

int sdma_v2_4_ring_test_ib (struct amdgpu_ring *ring , long timeout );

like yes, it returns an int, slay 💅

🌸 ARGUMENTS 🌸

  • ring — the amdgpu_ring structure that's holding all the ring information. it's the main character here, no cap 👑
  • timeout — the timeout value, measured in jiffies 🕰️ … or MAX_SCHEDULE_TIMEOUT if you're feeling chaotic and want to just, like, wait forever 🙈

💖 DESCRIPTION 💖

so what it does is: it tests a simple IB in the DMA ring (VI). that's it, that's the assignment ✨

it returns 0 on success, and an error on failure. literally the classic. ngl, it's giving "small function, big responsibility" 😭

fr fr, remember: 0 = the good ending, anything else = bestie we have a problem 💀

🦋 SEE ALSO 🦋

the kernel file lives at ./drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c — go say hi 🫶

and then the whole friend group, all here, all icons 💜:

and that's the page!! 🎀 this one came from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it was absolutely serving kernel documentation realness. iykyk 💅✨🌸

📦 where this page comes from