[$] A high-level quality-of-service interface

Quality-of-service (QoS) mechanisms attempt to prioritize some processes (ornetwork traffic, disk I/O, etc.) over others in order to meet a system'sperformance goals. This is a difficult topic to handle in the world of Linux,where workloads, hardware, and user expectations vary wildly. Qais Yousef spokeat the 2025 Linux Plumbers Conference, alongside his collaborators John Stultz,Steven Rostedt, and Vincent Guittot, about their plans for introducing ahigh-level QoS API for Linux in a way that leaves end users in control of itsconfiguration. The talk focused specifically on a QoS mechanism for thescheduler, to prioritize access to CPU resources differently for different kindsof processes.(slides;video)