Merge branch 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 irq update from Ingo Molnar:
 "A single commit that micro-optimizes an IRQ vectors code path in the
  CPU offlining code"

* 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/irq: Optimize free vector check in the CPU offline path