drm_modeset_lock_all_ctx(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_modeset_lock_all_ctx(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this is the page for drm_modeset_lock_all_ctx, and honestly? it's giving "grab everything at once" energy and I'm lowkey obsessed 🫶

🌸 NAME 🌸

drm_modeset_lock_all_ctx — take all modeset locks 💖 (yes, all of them. every single one. main character behaviour fr fr)

✨ SYNOPSIS ✨

int drm_modeset_lock_all_ctx (struct drm_device *dev , struct
drm_modeset_acquire_ctx *ctx );

that's the whole vibe. two args, one int back, no cap 🎀

🦋 ARGUMENTS 🦋

  • dev — the DRM device 💻 like, the thing you're doing all this for
  • ctx — the lock acquisition context 🎟️ this is where the locks get tracked, it's literally the whole point

🔥 DESCRIPTION 🔥

so what does it do? it takes all modeset locks. every last one. and it's the move when a more fine-grained scheme isn't (yet) implemented — like, someone's gonna do the fancy version eventually but right now we're doing the big sweep 🧹✨ and that's valid

⚠️ but hear me out — this is NOT the same as drm_modeset_lock_all 👀

unlike drm_modeset_lock_all, this function doesn't take the drm_mode_config.mutex, because that lock isn't required for modeset state changes. so if you're a caller who also needs to grab that lock, you gotta do it outside of the acquire context ctx — like, do it yourself, on your own time, not inside the context 🫶

and the aftercare? crucial bestie 💅 locks acquired with this function should be released by calling the drm_modeset_drop_locks function on ctx. don't just leave them hanging, that's so not the vibe 😭

see also: DRM_MODESET_LOCK_ALL_BEGIN and DRM_MODESET_LOCK_ALL_END — those macros are the sibling energy, iykyk 🌈

⭐ RETURN ⭐

  • 0 on success 🎉 slay
  • a negative error-code on failure 😔 (negative = not the good outcome, in case the sign didn't tip you off)

🎀 SEE ALSO 🎀

like, go read them all, they're literally a whole friend group at this point 👑💜

and that's the page!! 💖 brought to you from ./drivers/gpu/drm, dated October 2026 — go forth and lock responsibly, bestie, and remember: drop your locks before you leave 🦋✨ periodt

📦 where this page comes from