dm_test_buil..._per_display(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 dm_test_buil..._per_display(9) — Kernel API Manual 🌸

okay bestie, welcome to the Kernel API Manual entry for dm_test_buil..._per_display(9) — yes the name is a whole mouthful, we're abbreviating, it's giving "my full legal name doesn't fit on the form" energy 💅

✨ NAME ✨

dm_test_build_pm_display_cfg_per_display — a test that checks the per-display translation, no cap 🫶

🎀 SYNOPSIS 🎀

void dm_test_build_pm_display_cfg_per_display(struct kunit *test);

🦋 ARGUMENTS 🦋

  • test — the KUnit test context. it's literally the whole vibe-check harness for the test, hand it over and let it cook ✨

💜 DESCRIPTION 💜

okay so here's the tea: this verifies that build_pm_display_cfg maps each display config correctly. specifically it's checking two things:

  • it applies the controller_id = pipe_idx + 1 offset — yep, plus-one, that's not a typo, that's the actual rule 🔥
  • it copies the pixel clock over 🎀

that's it, that's the test. iconic, focused, does one thing and does it well, main character energy fr fr 👑

🌈 SEE ALSO 🌈

  • Kernel file
  • ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_pp_smu_test.c

and now the friend group, all of them, every single one, no cap (go say hi, they're all in the same test file):

bestie there are 87 of these. I counted. twice. go read them, they're all linked from ./drivers/gpu/drm/amd/display/... 🫶

and that's the whole page! source path is that ./drivers/gpu/drm/amd/display/... situation, version date is October 2026, and the page is called dm_test_buil..._per_display(9) — yes, still abbreviated, still iconic ✨💖 periodt 🎀

📦 where this page comes from