drm_crtc_vbl...atomic_flush(9)

💖 drm_crtc_vblank_atomic_flush(9) 💖

okay bestie, so this is a page straight out of the Kernel API Manual (section 9, we love a numbered era), and it's about one very specific little helper. it's not long, but it is iconic. let's get into it 🫶

---

✨ NAME ✨

drm_crtc_vblank_atomic_flush — no cap, this is the function that implements struct &drm_crtc_helper_funcs.atomic_flush. that's the whole assignment and she ate 💅

---

🌸 SYNOPSIS 🌸

void drm_crtc_vblank_atomic_flush (struct drm_crtc *crtc , struct
drm_atomic_commit *state );

literally two args, returns nothing (void), she's low-maintenance like that. 😌

---

🎀 ARGUMENTS 🎀

• crtc — The CRTC 💖 (yes, the CRTC. the main character of this whole situation.)
• state — The atomic state to apply 🌈

---

🦋 DESCRIPTION 🦋

so the helper drm_crtc_vblank_atomic_flush implements atomic_flush of struct drm_crtc_helper_funcs for CRTCs that only need to send out a VBLANK event. that's it. that's her whole job. she's not doing extra credit, she's not overachieving, she is doing exactly one thing and doing it flawlessly 💀✨

also, see also struct drm_crtc_helper_funcs.atomic_flush — like, go look at the struct field itself for the full lore, iykyk 👑

ngl this is the "just send the VBLANK event" girlie of the DRM world, and honestly? we stan a specialist.

---

⭐ SEE ALSO ⭐

go read these next, they're all in the group chat:

• Kernel file ./drivers/gpu/drm/drm_vblank_helper.c 📁
• overview(9)
• drm_crtc_vblank_atomic_enable(9)
• drm_crtc_vblank_atomic_disable(9)
• drm_crtc_vblank_helper_enable_vblank_timer(9)
• drm_crtc_vblank_helper_disable_vblank_timer(9)
• drm_crtc_vblank_helper_get_vblank_timestamp_from_timer(9)

---

and that's the whole page bestie!! 🧚💜

this one's filed under ./drivers/gpu/drm, and it's stamped October 2026 — so yeah, future-coded AND kernel-coded. obsessed. mwah 💋🎀🔥