dm_test_pla...alizes_state(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

okay so real talk, this page is dm_test_pla...alizes_state(9) and it lives in the Kernel API Manual, and it's about dm_test_plane_reset_initializes_state — a KUnit test that verifies reset installs default state. that's the whole vibe. she's a tester, she checks things, we love her for it 🎀

✨ SYNOPSIS ✨

void dm_test_plane_reset_initializes_state (struct kunit *test );

🫶 ARGUMENTS 🫶

  • test — the KUnit test context. that's it. that's the whole arg list. she takes one (1) thing and she takes it with confidence 💅

🌸 DESCRIPTION 🌸

okay so bestie, here's the tea ☕ — this test verifies that amdgpu_dm_plane_drm_plane_reset does three (3) iconic things, in order, no skips:

  1. it destroys the existing plane state (bye girl 💀)
  2. it allocates a fresh dm_plane_state (new state, new me ✨)
  3. it initializes the AMD-specific transfer function and HDR multiplier defaults (the defaults are defaulting, periodt 👑)

like, it's literally checking that the reset actually resets and doesn't just, idk, leave old vibes lying around. no cap. 🔥

🦋 SEE ALSO 🦋

first up, the actual kernel file, in case you wanna read the source (and you should, iykyk):

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

and now the whole friend group — every single sibling test, no one left behind 🫶:

ngl that's a lot of tests but every single one of them is doing the lord's work 🌈 go read them, they're all in the same file bestie 💖

and that's the page!! source/version is ./drivers/gpu/drm/amd/display/... and the date stamp says October 2026, so like… future girl Summer behavior honestly ⭐ stay hydrated, run your tests, slay 💅✨

📦 where this page comes from