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Explore power management interfaces between user space and the Linux kernel in this 35-minute conference talk from the Linux Plumbers Conference. Delve into the challenges faced by the kernel when making decisions related to power management, such as selecting low-power states or performance states for devices and processors. Examine the current limitations of user space interfaces for communicating performance needs, data processing capacity requirements, and acceptable latencies to the kernel. Consider the potential benefits of improving these interfaces and discuss possible approaches to enhance communication between user space and the kernel for more efficient power management decision-making.
