[tip:smp/hotplug 39/39] kernel/padata.c:990:2: error: implicit declaration of function 'cpuhp_state_add_instance_nocalls_cpuslocked'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git smp/hotplug
head:   b6a82f2d736a19456b4eff64d9b7c165f15e5698
commit: b6a82f2d736a19456b4eff64d9b7c165f15e5698 [39/39] padata: Fix fallout from get_online_cpus() rework
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 6.2.0
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout b6a82f2d736a19456b4eff64d9b7c165f15e5698
        # save the attached .config to linux build tree
        make.cross ARCH=ia64 

All errors (new ones prefixed by >>):

   kernel/padata.c: In function 'padata_alloc':
>> kernel/padata.c:990:2: error: implicit declaration of function 'cpuhp_state_add_instance_nocalls_cpuslocked' [-Werror=implicit-function-declaration]
     cpuhp_state_add_instance_nocalls_cpuslocked(hp_online, &pinst->node);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/cpuhp_state_add_instance_nocalls_cpuslocked +990 kernel/padata.c

   984	
   985		BLOCKING_INIT_NOTIFIER_HEAD(&pinst->cpumask_change_notifier);
   986		kobject_init(&pinst->kobj, &padata_attr_type);
   987		mutex_init(&pinst->lock);
   988	
   989	#ifdef CONFIG_HOTPLUG_CPU
 > 990		cpuhp_state_add_instance_nocalls_cpuslocked(hp_online, &pinst->node);
   991	#endif
   992		return pinst;
   993	

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