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] url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Bristot-de-Oliveira/The-Runtime-Verification-RV-interface/20220616-164837 base: https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git for-next config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220616/202206162325.aggB6gj9-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/c32f84c1978c0e0b8526da45a2ab87e191246f68 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/20220616-164837 git checkout c32f84c1978c0e0b8526da45a2ab87e191246f68 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash 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:28:5: warning: no previous prototype for 'register_react_panic' [-Wmissing-prototypes] 28 | int register_react_panic(void) | ^~~~~~~~~~~~~~~~~~~~ >> kernel/trace/rv/reactor_panic.c:34:6: warning: no previous prototype for 'unregister_react_panic' [-Wmissing-prototypes] 34 | void unregister_react_panic(void) | ^~~~~~~~~~~~~~~~~~~~~~ vim +/register_react_panic +28 kernel/trace/rv/reactor_panic.c 27 > 28 int register_react_panic(void) 29 { 30 rv_register_reactor(&rv_panic); 31 return 0; 32 } 33 > 34 void unregister_react_panic(void) 35 { 36 rv_unregister_reactor(&rv_panic); 37 } 38 -- 0-DAY CI Kernel Test Service https://01.org/lkp