Unified Linux CPU Boost Support Still Being Worked On
Written by Michael Larabel in Linux Kernel on 14 October 2013 at 12:09 PM EDT. 6 Comments
Kernel developers are still working on CPU Boost mode support for the Linux kernel's cpufreq to unify hardware and software-based solutions for CPU overclocking.

Samsung's Lukasz Majewski posted the ninth version of the CPUfreq Boost patches on Monday morning to unify hardware-based solutions like Intel's Turbo Frequency and AMD's Turbo Core with software-based solutions like the Samsung Exynos SoC Boost mode. With the patch series, it's the first time that software-managed overclocking has been added to Samsung Exynos ARM SoCs for running at higher than normal frequencies when the temperature is normal.

In unifying and cleaning-up this cpufreq code, there's now a unified /sys/devices/system/cpu/cpufreq/boost attribute for toggling CPU "boost" support on the different implementations. The Linux kernel's framework is also extended as part of the patches for disabling software boosting when hitting a thermal trip point.

For details on the CPUfreq core CPU Boost mode support see the new patch series and in particular patch 1 describes the changes to the cpufreq core for this boost frequency support.
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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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