On Tue, Jun 23, 2015 at 04:57:05PM +0000, KY Srinivasan wrote:
> > diff --git a/kernel/cpu.c b/kernel/cpu.c
> > index 94bbe46..8f35ee6 100644
> > --- a/kernel/cpu.c
> > +++ b/kernel/cpu.c
> > @@ -190,17 +190,19 @@ void cpu_hotplug_done(void)
> > void cpu_hotplug_disable(void)
> > {
> > cpu_maps_update_begin();
> > - cpu_hotplug_disabled = 1;
> > + cpu_hotplug_disabled++;
> > cpu_maps_update_done();
> > }
> > +EXPORT_SYMBOL_GPL(cpu_hotplug_disable);
> >
> > void cpu_hotplug_enable(void)
> > {
> > cpu_maps_update_begin();
> > - cpu_hotplug_disabled = 0;
> > + if (cpu_hotplug_disabled)
> > + cpu_hotplug_disabled--;
No that just papers over bugs.
> > cpu_maps_update_done();
> > }
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