dm_test_eve...rty_validate(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dm_test_eve...rty_validate — from the Kernel API Manual, bestie 🎀

okay so real talk, we're reading a page out of the Kernel API Manual today and honestly? this one is a whole little detective story about proving that a function actually got there. let's go ✨

🌸 NAME 🌸

dm_test_event_cpirq_schedules_property_validate — literally just: process_output() runs. that's the whole vibe check. no cap 💅

🦋 SYNOPSIS 🦋

void dm_test_event_cpirq_schedules_property_validate (struct kunit *test
);

that's it. that's the signature. she's compact. she's iconic. 🫶

✨ ARGUMENTS ✨

  • test — the KUnit test context, aka the little backpack of stuff this test carries around with her 🎒

🔥 DESCRIPTION 🔥

so here's the tea, bestie ☕: event_cpirq wraps up by calling process_output, and process_output always enqueues property_validate_dwork with delay=0. like, no matter what. every single time. zero delay, zero hesitation, main character energy 💅

and the test's whole move is to verify that that work item is pending. because if it's pending, that proves two things at once:

  1. the handler actually made it all the way to process_output 🏁
  2. the mutex got released on the way out 🔓

it's giving "i don't need to watch you leave, i just need to see your coat still on the chair" 😭 and honestly? ate. 👑

🌈 SEE ALSO 🌈

the kernel file in question lives at:

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

and now, the extended friend group 💖 (yes, all of them, we're not skipping anybody, everybody gets a shoutout):

like i said. everybody. 💜

okay that's the whole page!! source came from ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — future girl summer 🌸🦋 ty for reading bestie, ily, go read your dmesg 💖✨

📦 where this page comes from