Hi Daniel, I love your patch! Perhaps something to improve: [auto build test WARNING on rostedt-trace/for-next] [also build test WARNING on tip/sched/core] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Bristot-de-Oliveira/The-Runtime-Verification-RV-interface/20220714-052220 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/20220718/202207181929.M7O6FDon-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 07022e6cf9b5b3baa642be53d0b3c3f1c403dbfd) 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/intel-lab-lkp/linux/commit/f83faf07d0dad6cfd8fb22ff38b752dd7619bfc0 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Daniel-Bristot-de-Oliveira/The-Runtime-Verification-RV-interface/20220714-052220 git checkout f83faf07d0dad6cfd8fb22ff38b752dd7619bfc0 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/net/pcs/ kernel/trace/rv/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> kernel/trace/rv/reactor_panic.c:27:5: warning: no previous prototype for function 'register_react_panic' [-Wmissing-prototypes] int register_react_panic(void) ^ kernel/trace/rv/reactor_panic.c:27:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int register_react_panic(void) ^ static >> kernel/trace/rv/reactor_panic.c:33:6: warning: no previous prototype for function 'unregister_react_panic' [-Wmissing-prototypes] void unregister_react_panic(void) ^ kernel/trace/rv/reactor_panic.c:33:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void unregister_react_panic(void) ^ static 2 warnings generated. vim +/register_react_panic +27 kernel/trace/rv/reactor_panic.c 26 > 27 int register_react_panic(void) 28 { 29 rv_register_reactor(&rv_panic); 30 return 0; 31 } 32 > 33 void unregister_react_panic(void) 34 { 35 rv_unregister_reactor(&rv_panic); 36 } 37 -- 0-DAY CI Kernel Test Service https://01.org/lkp