setup_stub_dpm(9)

📦 version 7.3.1, in nixpkgs unstable

💅 setup_stub_dpm(9) — like, the whole Kernel API Manual moment ✨

okay bestie, welcome to the group chat, this is <pink>setup_stub_dpm</pink> from the Kernel API Manual and it's genuinely so cute and so specific 🎀

🌸 NAME 🌸

setup_stub_dpm — spins up a whole stub DPM environment so you can test things 🧪✨

✨ SYNOPSIS ✨

void setup_stub_dpm (struct kunit *test , struct amdgpu_device *adev );

that's it. that's the whole signature. no cap 🫶

🎀 ARGUMENTS 🎀

  • test — the KUnit test context 💖 like, the little world your test lives inside
  • adev — a pointer to the amdgpu_device you're gonna configure, slay 🔥

💅 DESCRIPTION 💅

So what does it actually do, you ask? 👀

It sets up adev->powerplay.pp_funcs (yes, that whole chain of structs, iconic) and initializes adev->pm.mutex — so that the amdgpu_dpm_* functions can be called safely with stub callbacks 💀✨

that's literally the whole vibe: stub it out, lock it down, call away. periodt 🧚

ngl this is test scaffolding, bestie — it's for making fake-but-cozy conditions so the real functions don't freak out 🫶

🌈 SEE ALSO 🌈

📁 Kernel file

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

🦋 the neighbors (all of them, no skipping, i promise)

and that's the whole page, bestie 💜 this one came from <purple>./drivers/gpu/drm/amd/display/...</purple> and it's dated October 2026 🌸 mwah, go write some tests, you're gonna ate 💅👑

📦 where this page comes from