DRM_MODESET_LOCK_ALL_BEGIN(9)

💅 DRM_MODESET_LOCK_ALL_BEGIN 💅

okay bestie, welcome to drm_modeset_lock.h — this is the DRM_MODESET_LOCK_ALL_BEGIN(9) situation and honestly? it's giving "glow-up for your boilerplate". it lives over in the Kernel API Manual, and yes we're gonna read it together. 🎀

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✨ NAME ✨

DRM_MODESET_LOCK_ALL_BEGIN — the helper that grabs all your modeset locks for you, no cap 🫶

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🌸 SYNOPSIS 🌸

DRM_MODESET_LOCK_ALL_BEGIN (dev , ctx , flags , ret );

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🦋 ARGUMENTS 🦋

• dev — the drm device 💖
• ctx — a local modeset acquire context. lowkey important: it will be dereferenced 👀
• flags — the DRM_MODESET_ACQUIRE_* flags, and they get passed straight to drm_modeset_acquire_init ✨
• ret — a local ret/err/etc variable that keeps track of your error status. your little emotional support int, if you will 😭

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💜 DESCRIPTION 💜

so the whole point: use these macros to make grabbing all the modeset locks with a local context so much simpler. it's giving less boilerplate, and it also properly checks return values where appropriate — main character energy, honestly 👑

any code you run between BEGIN and END will be holding the modeset locks. periodt. 🔥

⚠️ this must be paired with DRM_MODESET_LOCK_ALL_END. we will literally jump back and forth between the labels on deadlock and error conditions — that's just the vibe. 💀

drivers can acquire additional modeset locks, which is fine and valid 🙈. but if any lock acquisition fails, the control flow needs to jump to DRM_MODESET_LOCK_ALL_END with the ret parameter containing the return value of drm_modeset_lock. don't forget the handoff, bestie. 🫶

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🌈 RETURN 🌈

the only possible value of ret immediately after DRM_MODESET_LOCK_ALL_BEGIN is 0 — so no error checking is necessary. slay! ✅✨

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👑 SEE ALSO 👑

• Kernel file ./include/drm/drm_modeset_lock.h struct
• drm_modeset_acquire_ctx(9)
• struct drm_modeset_lock(9)
• drm_modeset_lock_fini(9)
• drm_modeset_is_locked(9)
• drm_modeset_lock_assert_held(9)
• DRM_MODESET_LOCK_ALL_END(9)

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⭐ 💖 and that's the whole page, bestie — brought to you from ./include/drm, dated October 2026, in the Kernel API Manual, DRM_MODESET_LOCK_ALL_BEGIN(9). go forth and lock responsibly 💅🌸