[tip:WIP.irq 42/46] kernel/built-in.o:undefined reference to `irq_affinity_online_cpu'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.irq
head:   26b97bb2e81ea67d3c76378958f31fb3252883c5
commit: be8e8a391f0f922e84ec2ece97d3781d03999584 [42/46] genirq/cpuhotplug: Handle managed IRQs on CPU hotplug
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 be8e8a391f0f922e84ec2ece97d3781d03999584
        # save the attached .config to linux build tree
        make.cross ARCH=ia64 

All errors (new ones prefixed by >>):

>> kernel/built-in.o:(.data.rel+0x1598): undefined reference to `irq_affinity_online_cpu'

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0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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