Start distangling the maze of hotplug notifiers in the scheduler.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NPeter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>