Hi Frederic, kernel test robot noticed the following build warnings: [auto build test WARNING on paulmck-rcu/dev] [also build test WARNING on linus/master v6.4-rc4 next-20230601] [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/Frederic-Weisbecker/rcu-Assume-IRQS-disabled-from-rcu_report_dead/20230531-182004 base: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev patch link: https://lore.kernel.org/r/20230531101736.12981-4-frederic%40kernel.org patch subject: [PATCH 3/9] rcu: Rename jiffies_till_flush to jiffies_lazy_flush config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20230602/202306020130.M1c0QAFE-lkp@xxxxxxxxx/config) compiler: arceb-elf-gcc (GCC) 12.3.0 reproduce (this is a W=1 build): mkdir -p ~/bin 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/c07a1bea9df8b80429d4e24052d83de94f5ee160 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Frederic-Weisbecker/rcu-Assume-IRQS-disabled-from-rcu_report_dead/20230531-182004 git checkout c07a1bea9df8b80429d4e24052d83de94f5ee160 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=arc olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash kernel/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306020130.M1c0QAFE-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from kernel/rcu/tree.c:5018: >> kernel/rcu/tree_nocb.h:271:6: warning: no previous prototype for 'rcu_lazy_set_jiffies_lazy_flush' [-Wmissing-prototypes] 271 | void rcu_lazy_set_jiffies_lazy_flush(unsigned long jif) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> kernel/rcu/tree_nocb.h:277:15: warning: no previous prototype for 'rcu_lazy_get_jiffies_lazy_flush' [-Wmissing-prototypes] 277 | unsigned long rcu_lazy_get_jiffies_lazy_flush(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/rcu_lazy_set_jiffies_lazy_flush +271 kernel/rcu/tree_nocb.h 268 269 #ifdef CONFIG_RCU_LAZY 270 // To be called only from test code. > 271 void rcu_lazy_set_jiffies_lazy_flush(unsigned long jif) 272 { 273 jiffies_lazy_flush = jif; 274 } 275 EXPORT_SYMBOL(rcu_lazy_set_jiffies_lazy_flush); 276 > 277 unsigned long rcu_lazy_get_jiffies_lazy_flush(void) 278 { 279 return jiffies_lazy_flush; 280 } 281 EXPORT_SYMBOL(rcu_lazy_get_jiffies_lazy_flush); 282 #endif 283 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
