The Need to Power Instrument the Linux Kernel

Explore the critical need for power instrumentation in the Linux kernel in this 39-minute conference talk by Patrick Titiano from BayLibre. Delve into the challenges faced by the community regarding power management, including the lack of power data and instrumentation. Learn about the motivations, challenges, and benefits of power instrumenting the Linux kernel, and discover how it could enable closed-loop power policies, power visualization apps, and improved power models for next-generation SoCs. Gain insights from Titiano's extensive experience in embedded technologies and power management, and understand the potential impact of this approach on future Linux kernel development. The talk covers topics such as power management policies, power instrumentation, FTrace, power databases, and power charts, concluding with a proof of concept demonstration.