ACPI & Power Management Updates For Linux 4.5
Written by Michael Larabel in Hardware on 12 January 2016 at 09:15 PM EST. 5 Comments
HARDWARE --
Intel's Rafael Wysocki has sent in the refreshed ACPI and power management code that's targeting the Linux 4.5 kernel merge window.

Of interest with these updates is a debugfs interface for communicating with ACPICA's new AML debugger so it can be accessed from a new user-space tool, more efficient handling of CPUfreq governors, many CPUfreq driver changes (including Intel's P-state driver), and updates to the device properties framework.

The P-State driver work includes improvements to benefit Atom CPUs based on Airmont and Silvermont for lower energy consumption. The ACPI driver for AMD SoCs has also been updated to support the APM X-Gene ACPI I2C device.

More details on these power management improvements for the Linux 4.5 kernel can be found via this pull request.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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