Linux 7.2 内核发布

Linux 7.2 内核本周按常规计划发布 1，此次版本代表了历史上第二繁忙的开发周期，仅被 6.7 版本超越 1。本次发布包含多项重要功能改进，涵盖缓存感知调度、MGLRU 改进、sched_ext 子调度器以及透明大页面自动创建等 1。

由 Igalia 贡献的 DRM 调度器公平策略因临界回归问题在 7.2-rc7 周期中被报告，因此以可选方式发布，默认调度器仍保持为 FIFO 方式 1。同时，本次版本实现了 V3D 驱动对 Raspberry Pi 4 和 5 GPU 的运行时电源管理支持 1。此外，该驱动修复了影响 Raspberry Pi 3 的一个长期存在 14 年之久的 robust futex 机制 bug 1。

The Linux 7.2 kernel has been released this week according to the regular development schedule, marking one of the most active development periods in the project's history.1 The release cycle was the second busiest on record, surpassed only by the 6.7 cycle.1

The new kernel version introduces several significant improvements across multiple subsystems. Notable additions include cache-aware scheduling, MGLRU enhancements, the sched_ext sub-scheduler, and automatic transparent huge page creation.1 The V3D driver now supports runtime power management for Raspberry Pi 4 and 5 GPUs, implemented to enhance energy efficiency on these platforms.1 Additionally, a robust futex mechanism bug affecting the Raspberry Pi 3 GPU driver that had persisted for 14 years has been fixed.1

A DRM scheduler fairness policy contributed by Igalia was initially planned for inclusion but has been made optional due to critical regression reports identified during the 7.2-rc7 development cycle.1 The default scheduling policy remains FIFO, with the fairness policy available as an optional feature.1