tree: https://github.com/kevin78/linux.git percpu-cleanup head: ec8bef0e65982bb71c931efddde0fca6418e02ba commit: 802124ef348edb29320cfba0dc15edb1c1f7f0c1 [2/4] mm: percpu: Add pcpu_fc_cpu_to_node_fn_t typedef config: sparc64-randconfig-p001-20211212 (https://download.01.org/0day-ci/archive/20211213/202112132105.zCgSs9Zg-lk...) compiler: sparc64-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/kevin78/linux/commit/802124ef348edb29320cfba0dc15edb1c... git remote add kevin78 https://github.com/kevin78/linux.git git fetch --no-tags kevin78 percpu-cleanup git checkout 802124ef348edb29320cfba0dc15edb1c1f7f0c1 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc64 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 >>): arch/sparc/kernel/smp_64.c: In function 'setup_per_cpu_areas': 1644 | cpu_to_node, | ^~~~~~~~~~~ | dev_to_node arch/sparc/kernel/smp_64.c:1644:45: note: each undeclared identifier is reported only once for each function it appears in vim +1644 arch/sparc/kernel/smp_64.c 1633 1634 void __init setup_per_cpu_areas(void) 1635 { 1636 unsigned long delta; 1637 unsigned int cpu; 1638 int rc = -EINVAL; 1639 1640 if (pcpu_chosen_fc != PCPU_FC_PAGE) { 1641 rc = pcpu_embed_first_chunk(PERCPU_MODULE_RESERVE, 1642 PERCPU_DYNAMIC_RESERVE, 4 << 20, 1643 pcpu_cpu_distance, --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org