Merge branch 'core-printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

* 'core-printk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  printk, lockdep: Switch to tracked irq ops
  printk, lockdep: Remove superfluous preempt_disable()
  printk, lockdep: Disable lock debugging on zap_locks()