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NVIDIA Wiring Up Autonomous Performance Level Selection To Linux CPPC CPUFreq Driver
Similar to the Autonomous Performance Level Selection and Energy Performance Preference (EPP) support already found within the Intel P-State and AMD P-State CPU frequency scaling drivers for their modern processors, NVIDIA engineers are working on similar support for the CPPC CPUFreq driver that can benefit their Grace processor.
Sent out this week were a set of patches for wiring up Autonomous Selection mode in cppc_cpufreq for complying with the ACPI Collaborative Processor Performance Control (CPPC) specifications. When enabled, the hardware is allowed to autonomously select the CPU frequency within the min and max perf boundaries using the Engergy Performance Preference hints. More details for those interested in the work via this patch series.About The AuthorMichael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience.
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