Hi Daniel, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on rostedt-trace/for-next] [also build test WARNING on lwn/docs-next linus/master v5.17-rc4 next-20220214] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Daniel-Bristot-de-Oliveira/The-R... base: https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20220215/202202150232.GmgML41h-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project ea071884b0cc7210b3cc5fe858f0e892a779a23b) 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/e716a88380b48ccbfe62acc96f536718e... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Daniel-Bristot-de-Oliveira/The-Runtime-Verification-RV-interface/20220214-193144 git checkout e716a88380b48ccbfe62acc96f536718e439130e # 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=hexagon SHELL=/bin/bash kernel/trace/rv/ 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 >>): struct rv_reactor_def *get_reactor_rdef_by_name(char *name) ^ kernel/trace/rv/rv_reactors.c:76:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct rv_reactor_def *get_reactor_rdef_by_name(char *name) ^ static 1 warning generated. vim +/get_reactor_rdef_by_name +76 kernel/trace/rv/rv_reactors.c 75 77 { 78 struct rv_reactor_def *r; 79 list_for_each_entry(r, &rv_reactors_list, list) { 80 if (strcmp(name, r->reactor->name) == 0) 81 return r; 82 } 83 84 return NULL; 85 } 86 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org