Kernel prepatch 6.9-rc1

The 6.9-rc1 kernel prepatch is out fortesting. Linus Torvalds described some rather large updates to the corekernel code that are coming for 6.9:

The timer subsystem had a fairly big rewrite, to have per-cpu timerwheels to improve performance of timers, which can be a big dealparticularly for networking. The other fairly notable core update isto the workqueue subsystem, where one notable addition is for BHworkqueue support. That's notable mainly because it means we finallyhave a way away from tasklets. The tasklet interface has basicallybeen deprecated for a long while, but we've never really had any goodalternatives (with threaded interrupt handlers being one suggesteduse-case, but not realistic in many cases).