Merge tag 'printk-for-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull printk updates from Petr Mladek:

 - John Ogness became PRINTK co-maintainer

 - Unregister boot consoles when any proper console is registered at the
   end of the boot phase. Before they were removed only when the
   so-called preferred console, usually set via the last 'console='
   parameter, got registered

 - Fix computation for increasing the printk ringbuffer on systems with
   many CPUs and possibly long backtraces from all CPUs

 - Cleaned up irq_works handling for deferred printk operations

 - Use acquire/release semantic for filled_random_ptr_key

 - Allow to use ':' in console options

 - More code clean up

* tag 'printk-for-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  MAINTAINERS: Make John PRINTK co-maintainer
  lib/vsprintf: Use EXPORT_SYMBOL_IF_KUNIT() to export symbols
  printk: Remove console options before decoding the name
  printk: increase the ring buffer for more than 16 CPUs by default
  printk_ringbuffer: Avoid needless read of prb_desc
  printk: Use two irq_works instead per-CPU
  lib/vsprintf: Use acquire/release for ptr_key publication
  printk: Remove remaining boot consoles when a real console exists

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