Hi Jinjiang, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on mcgrof/modules-next linus/master v6.5-rc6 next-20230815] [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/Jinjiang-Tu/mm-page_owner-support-identifying-pages-allocated-by-modules/20230815-195940 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20230815125251.2865852-3-tujinjiang%40huawei.com patch subject: [PATCH 2/6] mm/page_owner: show modules allocating pages when oom occurred config: x86_64-randconfig-x073-20230815 (https://download.01.org/0day-ci/archive/20230815/202308152353.TqoJfjIk-lkp@xxxxxxxxx/config) compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) reproduce: (https://download.01.org/0day-ci/archive/20230815/202308152353.TqoJfjIk-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308152353.TqoJfjIk-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> kernel/module/page_owner.c:34:6: warning: no previous prototype for function 'po_register_oom_notifier' [-Wmissing-prototypes] void po_register_oom_notifier(void) ^ kernel/module/page_owner.c:34:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void po_register_oom_notifier(void) ^ static 1 warning generated. vim +/po_register_oom_notifier +34 kernel/module/page_owner.c 33 > 34 void po_register_oom_notifier(void) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
