tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git pending-fixes head: dfd7907f4e4fe53417c1436f4a727a143e0ba2d2 commit: c3c94752087e789419be7024116c0a7b22883541 [265/356] riscv: cpu-hotplug: clear cpu from numa map when teardown config: riscv-randconfig-c006-20220210 (https://download.01.org/0day-ci/archive/20220210/202202101650.4mU4Ubis-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project aa845d7a245d85c441d0bd44fc7b6c3be8f3de8d) 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 # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=c3c94752087e789419be7024116c0a7b22883541 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next pending-fixes git checkout c3c94752087e789419be7024116c0a7b22883541 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> arch/riscv/kernel/cpu-hotplug.c:43:2: error: implicit declaration of function 'numa_remove_cpu' [-Werror,-Wimplicit-function-declaration] numa_remove_cpu(cpu); ^ arch/riscv/kernel/cpu-hotplug.c:43:2: note: did you mean 'remove_cpu'? include/linux/cpu.h:128:5: note: 'remove_cpu' declared here int remove_cpu(unsigned int cpu); ^ 1 error generated. vim +/numa_remove_cpu +43 arch/riscv/kernel/cpu-hotplug.c 24 25 /* 26 * __cpu_disable runs on the processor to be shutdown. 27 */ 28 int __cpu_disable(void) 29 { 30 int ret = 0; 31 unsigned int cpu = smp_processor_id(); 32 33 if (!cpu_ops[cpu] || !cpu_ops[cpu]->cpu_stop) 34 return -EOPNOTSUPP; 35 36 if (cpu_ops[cpu]->cpu_disable) 37 ret = cpu_ops[cpu]->cpu_disable(cpu); 38 39 if (ret) 40 return ret; 41 42 remove_cpu_topology(cpu); > 43 numa_remove_cpu(cpu); 44 set_cpu_online(cpu, false); 45 irq_migrate_all_off_this_cpu(); 46 47 return ret; 48 } 49 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx