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This allows the BPF > > + * scheduler to dispatch tasks without strict ordering requirements, while > > + * the SCX core safely rejects invalid dispatches. > > * > > + * State Transitions > > * > > + * .------------> NONE (owned by SCX core) > > + * | | ^ > > + * | enqueue | | direct dispatch > > + * | v | > > + * | QUEUEING -------' > > + * | | > > + * | enqueue | > > + * | completes | > > + * | v > > + * | QUEUED (owned by BPF scheduler) > > + * | | ^ > > + * | dispatch | | affinity changed > > + * | | | (dispatch aborts) > > + * | v | > > + * | DISPATCHING -----' > > + * | | > > + * | dispatch | > > + * | completes | > > + * `---------------' > > I don't think we transition tasks from DISPATCHING to QUEUED on affinity > changes. Not yet anyway, right? Ah, you're right! That transition was part of my invalidation patch, so I had it in head, but it's not actually in the kernel (yet). :) I'll remove it. Thanks, -Andrea