scx_cake: a gaming-first sched_ext scheduler — one master algorithm on
kernel primitives, no feature flags, no knobs, no runtime telemetry.
Placement is the kernel’s idle-CPU pick with direct dispatch on a hit.
Under saturation, wakeups queue on one global vtime queue while
slice-expired tasks requeue on their own CPU’s queue (“wakeups global,
continuations local”), and each CPU dispatches the earliest eligible of
the two. The time slice is a compile-time constant.