[kbuild-all] [peterz-queue:sched/core 29/29] kernel/sched/fair.c:230:9: error: implicit declaration of function 'sched_cfs_bandwidth_sysctl_init'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/core head: bf8d9ef490e0600b3b30ac2244858ecd327123ab commit: bf8d9ef490e0600b3b30ac2244858ecd327123ab [29/29] sched: Move cfs_bandwidth_slice sysctls to fair.c config: powerpc-allnoconfig (https://download.01.org/0day-ci/archive/20220209/202202092104.f0q3gfHV-lk...) compiler: powerpc-linux-gcc (GCC) 11.2.0 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/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue sched/core git checkout bf8d9ef490e0600b3b30ac2244858ecd327123ab # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash kernel/sched/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): kernel/sched/fair.c: In function 'sched_init_granularity': 230 | sched_cfs_bandwidth_sysctl_init(); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c: At top level: kernel/sched/fair.c:652:5: warning: no previous prototype for 'sched_update_scaling' [-Wmissing-prototypes] 652 | int sched_update_scaling(void) | ^~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:5469:6: warning: no previous prototype for 'init_cfs_bandwidth' [-Wmissing-prototypes] 5469 | void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b) {} | ^~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11694:6: warning: no previous prototype for 'free_fair_sched_group' [-Wmissing-prototypes] 11694 | void free_fair_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11696:5: warning: no previous prototype for 'alloc_fair_sched_group' [-Wmissing-prototypes] 11696 | int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11701:6: warning: no previous prototype for 'online_fair_sched_group' [-Wmissing-prototypes] 11701 | void online_fair_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11703:6: warning: no previous prototype for 'unregister_fair_sched_group' [-Wmissing-prototypes] 11703 | void unregister_fair_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/sched_cfs_bandwidth_sysctl_init +230 kernel/sched/fair.c 226 227 void __init sched_init_granularity(void) 228 { 229 update_sysctl(); 231 } 232 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org