dm_test_fbc_...dy_allocated(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME 💖

okay so this page is literally called dm_test_fbc_...dy_allocated (yes the title is truncated, that's just how it is, iykyk 🫶) and it lives in section 9 of the Kernel API Manual.

The main character here is dm_test_fbc_init_already_allocated — a test that makes sure fbc_init keeps an existing buffer instead of throwing it away. slay. 💅

✨ SYNOPSIS ✨

void dm_test_fbc_init_already_allocated (struct kunit *test );

that's it. one function. no flags, no drama. periodt. 🎀

🌸 ARGUMENTS 🌸

  • test — the KUnit test context 💜 this is the lil container that holds the test's state, and our function takes it and does its thing with it.

🦋 SEE ALSO 🦋

bestie. sit down. this list is long and we are gonna get through it together, no skipping, no summarising, because every single one of these is a real sibling test and they all deserve their moment. 👑

🎀 the source file

  • Kernel file — ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_connector_test.c (this is where the whole test family lives 🏠)

💫 subconnector type vibes

🌈 content type energy

🍓 adjusting colour depth (the whole saga)

🧚 output color space (yes, with a z, that's the test's name not mine)

🔥 convert color depth

💜 color depth from info

⭐ to connector type

🎀 is duplicate mode

💅 encoder crtc mask

🦋 aspect ratio

🌸 crtc timing behaviour

🧚 funcs reset

🍓 atomic + hdr

👑 set_property (big one, stay with me)

💜 get_property

🌈 highest refresh + freesync video mode

🎀 cacp caps, first round

🦋 set panel type, the first chapter

💫 subconnector updates

🔥 fbc_init (our bestie's actual family!!)

💀 detect mst

🧚 find first crtc

🍓 set panel type, the samsung chapter

💜 cacp caps, second round

👑 fill_stream (so many. so iconic.)

🌈 create_stream

🎀 detect

🦋 the little singles

💫 destroy

🔥 atomic_check

🧚 hdmi cec + edid + eml sink

🍓 streams, encoders and native mode

💜 common modes + freesync modes

👑 i2c

🌈 amd vsdb

🎀 displayid vrr

🦋 mode valid

💫 suspend / resume + leftover legends

🔥 update after detect

🧚 update scaling (final boss of the list)

ok that's genuinely all of them, we ate that list UP 🔥 no cap, not a single one skipped 💅

and that's the page!! sign-off time: this lil beauty comes from ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — so yeah, it's from the future, main character energy only 🌟 stay hydrated, go read your kernel tests, mwah 🫶💖

📦 where this page comes from