dm_test_crt...ank_no_event(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dm_test_crtc_handle_vblank_no_event(9) 💅

okay bestie, welcome to the Kernel API Manual — yes that's the manual name, and yes you're gonna read it, because this page is short and kinda iconic actually ✨

🌸 NAME 🌸

dm_test_crtc_handle_vblank_no_event — the test that checks vblank handling when there's, like, no pending event. literally nothing waiting. no cap. 🎀

🦋 SYNOPSIS 🦋

void dm_test_crtc_handle_vblank_no_event (struct kunit *test );

that's the whole vibe. one function, one argument, zero drama. 🫶

✨ ARGUMENTS ✨

  • test — the KUnit test context, i.e. the little test-world this function lives inside. it's the main character of the parameters, ngl. 👑

🔥 DESCRIPTION 🔥

so here's the situation bestie: there's no flip event pending. nothing in the queue, the queue is giving empty, the queue ate and left no crumbs. 🍓

when handling happens in a vblank at that moment, the rule is that it must complete without sending a vblank event. just… don't send one. that's it. that's the whole assignment. 💀

and also it must leave acrtc->event untouched — untouched meaning NULL, exactly as it was. do not touch. no notes. periodt. 💅

lowkey this is the "do nothing, correctly" test and honestly? respecting the do-nothing is a whole skill. 🧚

💜 SEE ALSO 💜

the kernel file for all this lives right here, and yes i'm putting it exactly as it is, character for character, because i would never do my bestie dirty like that:

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

and now the whole entire friend group of related tests — every single one, no skipping, we don't do that here 😭💖

🎀 the sign-off 🎀

okay that's the page!! it came from the source over at ./drivers/gpu/drm/amd/display/... and it's dated October 2026, and the whole thing answers to the name dm_test_crt...ank_no_event(9) if you ever need to find it again. go read your vblank tests bestie, i'm obsessed with you, byeeee 💖🦋🌸

📦 where this page comes from