[kbuild-all] undefined reference to `memcg_bulk_charge_hook'

tree: https://github.com/0day-ci/linux/commits/UPDATE-20211012-182031/Vasily-Av... head: e10c5e64a0799c75d26d2a82c03f757335616711 commit: e10c5e64a0799c75d26d2a82c03f757335616711 memcg: enable memory accounting in __alloc_pages_bulk date: 11 hours ago config: powerpc64-randconfig-r001-20211012 (attached as .config) compiler: powerpc-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/e10c5e64a0799c75d26d2a82c03f75733... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20211012-182031/Vasily-Averin/memcg-enable-memory-accounting-in-__alloc_pages_bulk/20211008-172703 git checkout e10c5e64a0799c75d26d2a82c03f757335616711 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): powerpc-linux-ld: mm/page_alloc.o: in function `__alloc_pages_bulk': powerpc-linux-ld: (.text+0x870c): undefined reference to `memcg_bulk_post_charge_hook' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org