dev_pm_opp_...tion_latency(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dev_pm_opp_get_max_transition_latency 💅

okay bestie so this is a page out of the Kernel API Manual (yes, the kernel has a manual, and yes it has main character energy) — and we're talking about dev_pm_opp_get_max_transition_latency, which is a whole mouthful but she's worth it, i promise 🫶

✨ NAME ✨

dev_pm_opp_get_max_transition_latency — literally gets you the max transition latency, in nanoseconds. that's it. that's the vibe. ⭐

🌸 SYNOPSIS 🌸

unsigned long dev_pm_opp_get_max_transition_latency (struct device *dev
);

like, she takes one struct device *dev and hands you back an unsigned long. clean. minimal. iconic.

🎀 ARGUMENTS 🎀

  • dev — the device we're doing this whole operation for. that's your girl. the one we care about 💖

🦋 RETURN 🦋

she returns the max transition latency, measured in nanoseconds, for switching from one OPP to another. yes, nanoseconds. yes, that's a real unit. no cap.

ngl if you're wondering what an OPP even is, that's a whole other manpage — this one's just about the latency number, bestie 🙈

🔥 SEE ALSO 🔥

the whole friend group, fr fr — and the kernel file ./drivers/opp/core.c:

like……. the way that list just keeps GOING 😭 she really said "you will know my entire social circle."

tiny footnote bestie: this page lives in ./drivers/opp and it's dated October 2026 — so yeah, she's from the future, she's been ready 💅✨

hope that helped, mwah 🍓💜

📦 where this page comes from