[kbuild-all] [morse:mpam/snapshot/v5.16 4/137] arch/x86/kernel/cpu/resctrl/core.c:417:6: warning: no previous prototype for function 'domain_free'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git mpam/snapshot/v5.16 head: 364c1c42b229912132e1615c2ce15be7154e2156 commit: 22965510f006f9207f1615ffb3543c9314ac6d01 [4/137] x86/resctrl: Group struct rdt_hw_domain cleanup config: i386-randconfig-a011-20220124 (https://download.01.org/0day-ci/archive/20220126/202201260732.58wp6s70-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 997e128e2a78f5a5434fc75997441ae1ee76f8a4) 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/v5.16 git checkout 22965510f006f9207f1615ffb3543c9314ac6d01 # 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=i386 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 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