11–13 Dec 2025
Asia/Tokyo timezone

Multiple system-wide low power-states

12 Dec 2025, 16:50
20m
"Hall B3 (63)" (Toranomon Hills Mori Tower)

"Hall B3 (63)"

Toranomon Hills Mori Tower

Power and Thermal management MC Power and Thermal management MC

Speakers

Kevin Hilman (BayLibre) Ulf Hansson (Linaro)

Description

Since last LPC in Vienna, we have continued to explore how to add support for multiple system-wide low power-states to the Linux kernel. A series [1] has been posted that suggests us to add a user-space interface, to allow a system-wakeup latency constraint to be specified. The series also includes deployment for how the latency-constraint can be taken into account during s2idle and especially in regards to CPU/CPU-cluster wakeup-latencies for low-power states.

Let's discuss and try to conclude how to move forward!

[1]
https://lore.kernel.org/all/20250716123323.65441-1-ulf.hansson@linaro.org/

Primary authors

Kevin Hilman (BayLibre) Ulf Hansson (Linaro)

Co-author

Dhruva Gole (Texas Instruments)

Presentation materials

There are no materials yet.