tree: https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git mpam/snapshot/v5.15 head: ce3629841262f725a5f3a327403fcaf0e604a85e commit: 7e1bcec5158ff703f38e7b7a2bc314795319fbc4 [4/139] x86/resctrl: Group struct rdt_hw_domain cleanup config: x86_64-buildonly-randconfig-r001-20211112 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c3dddeeafb529e769cde87bd29ef6271ac6bfa5c) 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://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git/commit/?i... git remote add morse https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git git fetch --no-tags morse mpam/snapshot/v5.15 git checkout 7e1bcec5158ff703f38e7b7a2bc314795319fbc4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): void domain_free(struct rdt_hw_domain *hw_dom) ^ arch/x86/kernel/cpu/resctrl/core.c:417:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void domain_free(struct rdt_hw_domain *hw_dom) ^ static 1 warning generated. vim +/domain_free +417 arch/x86/kernel/cpu/resctrl/core.c 416 418 { 419 kfree(hw_dom->ctrl_val); 420 kfree(hw_dom->mbps_val); 421 kfree(hw_dom); 422 } 423 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org