drm_crtc_vblank_get(9)

💖 drm_crtc_vblank_get — get a reference count on vblank events 💖

Okay bestie, so this little function lives in the Kernel API Manual and honestly? It's giving "tiny function, big responsibilities." It's drm_crtc_vblank_get, and it's about to be your new fave.

---

✨ SYNOPSIS ✨

int drm_crtc_vblank_get (struct drm_crtc *crtc );

🎀 ARGUMENTS 🎀

• crtc — which CRTC to own. Yes, own. Claim your CRTC, bestie, it's yours now 💅

---

🌸 DESCRIPTION 🌸

So what it actually does: it acquires a reference count on vblank events 🦋 — the whole point being to avoid having them disabled while in use. Like, you're holding the door open so vblank doesn't dip out on you mid-job. No cap, that's the entire vibe. Keep that ref count alive and the events stay alive with you 🫶

---

⭐ RETURN ⭐

Zero on success, or a negative error code on failure 😭 — so like, check it, fr fr. Zero? Slay, you're good. Negative? That's the universe telling you something went sideways.

---

👑 SEE ALSO 👑

• Kernel file ./drivers/gpu/drm/drm_vblank.c — vblank handling(9)
• drm_crtc_accurate_vblank_count(9)
• drm_vblank_init(9)
• drm_dev_has_vblank(9)
• drm_crtc_vblank_waitqueue(9)
• drm_calc_timestamping_constants(9)
• drm_crtc_vblank_helper_get_vblank_timestamp_internal(9)
• drm_crtc_vblank_helper_get_vblank_timestamp(9)
• drm_crtc_get_last_vbltimestamp(9)
• drm_crtc_vblank_count(9)
• drm_vblank_count_and_time(9)
• drm_crtc_vblank_count_and_time(9)
• drm_crtc_next_vblank_start(9)
• drm_crtc_arm_vblank_event(9)
• drm_crtc_send_vblank_event(9)
• drm_crtc_vblank_put(9)
• drm_crtc_wait_one_vblank(9)
• drm_crtc_vblank_off(9)
• drm_crtc_vblank_reset(9)
• drm_crtc_set_max_vblank_count(9)
• drm_crtc_vblank_on_config(9)
• drm_crtc_vblank_on(9)
• drm_crtc_vblank_restore(9)
• drm_handle_vblank(9)
• drm_crtc_handle_vblank(9)
• drm_crtc_vblank_start_timer(9)
• drm_crtc_vblank_cancel_timer(9)
• drm_crtc_vblank_get_vblank_timeout(9)

Like, that's a whole friend group right there — a whole era of vblank functions 🧚 Go read them, iykyk 💜

---

✨ and that's the whole page, bestie ✨ This icon was brought to you by ./drivers/gpu/drm, dated October 2026, straight from the Kernel API Manual — drm_crtc_vblank_get(9), periodt 💅🎀