[kbuild-all] kernel/rcu/tasks.h:1031:6: warning: no previous prototype for 'show_rcu_tasks_gp_kthreads'

Hi Paul, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 7af08140979a6e7e12b78c93b8625c8d25b084e2 commit: e21408ceec2de5be418efa39feb1e2c00f824a72 rcu-tasks: Add RCU tasks to rcutorture writer stall output date: 12 months ago config: arm-zeus_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e21408ceec2de5be418efa39feb1e2c00f824a72 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=arm 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 >>): In file included from kernel/rcu/update.c:587: 1031 | void show_rcu_tasks_gp_kthreads(void) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/show_rcu_tasks_gp_kthreads +1031 kernel/rcu/tasks.h 1028 1029 #else /* #ifdef CONFIG_TASKS_RCU_GENERIC */ 1030 static inline void rcu_tasks_bootup_oddness(void) {} --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org