Hi Johannes,

[auto build test ERROR on net/master]
[also build test ERROR on v4.8-rc6 next-20160914]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/Johannes-Weiner/mm-memcontrol-make-per-cpu-charge-cache-IRQ-safe-for-socket-accounting/20160915-035634
config: parisc-b180_defconfig (attached as .config)
compiler: hppa-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=parisc 

All errors (new ones prefixed by >>):

   net/built-in.o: In function `sk_alloc':
   (.text.sk_alloc+0xb4): undefined reference to `mem_cgroup_sk_alloc'
   net/built-in.o: In function `__sk_destruct':
>> net/core/.tmp_sock.o:(.text.__sk_destruct+0xdc): undefined reference to `mem_cgroup_sk_free'
   net/built-in.o: In function `sk_clone_lock':
   (.text.sk_clone_lock+0x184): undefined reference to `mem_cgroup_sk_alloc'

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