dm_test_ato...lper_failure(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dm_test_atomic_check_helper_failure(9) 💅

ok so this is a page from the Kernel API Manual (section 9, bestie, we're in kernel-doc land) and it's all about one very specific little test helper. buckle up 🎀

🌸 NAME 🌸

dm_test_atomic_check_helper_failure — literally the test that verifies helper-check failures actually return. no cap, that's the whole vibe check. 💖

✨ SYNOPSIS ✨

void dm_test_atomic_check_helper_failure (struct kunit *test );

🦋 ARGUMENTS 🦋

  • test — the KUnit test context. that's it, that's the whole parameter list, she's low maintenance 💅

🔥 DESCRIPTION 🔥

ok so picture this: this helper verifies whether atomic_check returns before DC validation happens, specifically when the DRM helper state validation rejects the plane. like, the helper-side check says "nope, not today" and our girl atomic_check is supposed to bounce out early instead of running off to do DC validation. that's the behavior under test. 🫶

it's giving "who's on first, but make it kernel validate ordering." iconic. ✨

👑 SEE ALSO 👑

the kernel file we're living in, first and foremost:

./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c

and then, bestie, hold on, there's a whole squad of sibling tests. every single one of them, in order, no skips, no cuts 🍓:

ngl that SEE ALSO list is a whole friend group chat and we love every single member of it 🧚💜

ok bye bestie, mwah 💋 — this page came from the source path ./drivers/gpu/drm/amd/display/... and it's dated October 2026, still hanging out in section 9 of the Kernel API Manual. periodt. 🌈⭐

📦 where this page comes from