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frequency scaling

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OPPO Kernel Craftsman
OPPO Kernel Craftsman
Mar 1, 2024 · Mobile Development

GPU Frequency Scaling on Qualcomm Adreno Using the Linux devfreq Framework

Using Qualcomm’s Adreno GPU as a case study, the article explains how the Linux devfreq framework enables GPU frequency scaling by creating a kgsl devfreq device and an msm‑adreno‑tz governor, detailing their initialization, event handling, target‑frequency computation, and the kernel callbacks that apply the new rates.

AdrenoGPULinux kernel
0 likes · 5 min read
GPU Frequency Scaling on Qualcomm Adreno Using the Linux devfreq Framework
OPPO Kernel Craftsman
OPPO Kernel Craftsman
Feb 10, 2021 · Operations

Understanding CPU Power Management and the schedutil cpufreq Governor

Understanding CPU power management involves static and dynamic power, the cpufreq framework’s core, governor, driver, and stats components, and common governors, while the schedutil governor—introduced in Linux 4.7—leverages scheduler utilization data, fast‑switching, and tunable parameters to compute and apply per‑cluster frequencies instantly for low‑latency, fine‑grained scaling.

CPU Power ManagementLinux kernelcpufreq
0 likes · 24 min read
Understanding CPU Power Management and the schedutil cpufreq Governor