drm_atomic_commit_clear(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_atomic_commit_clear(9) 💅

okay so this is a page from the Kernel API Manual, and it's about drm_atomic_commit_clear — yes bestie, we're doing kernel DRM today, and honestly? it's giving main character energy ✨

🌸 NAME 🌸

drm_atomic_commit_clear — clear state object 🧹💖

✨ SYNOPSIS ✨

void drm_atomic_commit_clear (struct drm_atomic_commit *state );

🎀 ARGUMENTS 🎀

  • state — the atomic state, aka the whole little bundle of modeset tea we're about to wipe 🫖

🦋 DESCRIPTION 🦋

okay so picture this: the w/w mutex algorithm detects a deadlock 😭 and the move is that we have to back off and drop all locks. like, all of them. and the second we do that, someone else can literally sneak in and change the current modeset configuration 🙈 which means all the state that got assembled in state is no longer an atomic update to the current state — it's an atomic update to some arbitrary earlier state 😬 and that could break assumptions the driver's drm_mode_config_funcs.atomic_check likely relies on. not cute. not slay.

so hence (yes, hence 💅) we must clear all cached state and completely start over, using this function. that's the whole vibe. reset era. periodt 🔥

🌈 SEE ALSO 🌈

first up, from the kernel file: ./drivers/gpu/drm/drm_atomic.c — state lifetime(9), and then the whole friend group 👑

ok and one lil note before you go: this whole page lives under ./drivers/gpu/drm, dated October 2026 💜 go read the other pages too, iykyk 🧚‍♀️

that's the whole page bestie, mwah 🫶💖

📦 where this page comes from