John Ogness of Intel-owned Linutronix has been working on the printk clean-ups as a prereq for working toward the long-awaited threaded / atomic console printing support for non-blocking consoles . These are the clean-ups that get the printk subsystem to the stage just prior to the pending threaded/atomic code being introduced. Sadly though the threaded/atomic support itself isn't ready in time for the Linux 6.6 merge window. Hopefully it won't be much longer and in turn finally seeing the door open for mainlining real-time support that has been maintained out-of-tree for many years.
Today's printk pull has the code clena-ups, a new per-console flag for the console suspended state rather than being a global state, avoid trying to get the console lock during a panic(), documentation fixes, and other updates.