[PATCH] powerpc: Only obtain cpu_hotplug_lock if called by rtasd

[Thomas Gleixner]

On Thu, 22 Jun 2017, Thiago Jung Bauermann wrote:
> Michael Bringmann provided this information:
> >> It's not hard to backport both this patch and commit fe5595c07400
> >> ("stop_machine: Provide stop_machine_cpuslocked()") from branch
> >> smp/hotplug in tip.git for stable.
> >
> > Yeah but it's not really my business backporting that unfortunately.
> 
> Sorry, I wasn't clear. I was offering to provide backported patches for
> the relevant stable branches.
> 
> Though that will only be necessary if we also backport the topology
> fixes as well.

So shall I pick up the fix and route it through tip smp/hotplug where the
cpu hotplug core changes reside on which that patch depends on?

Thanks,

	tglx