[kbuild-all] [zen-kernel-zen-kernel:5.7/muqss 1/16] kernel/sched/MuQSS.c:239:12: warning: no previous prototype for 'arch_sd_sibling_asym_packing'

tree: https://github.com/zen-kernel/zen-kernel 5.7/muqss head: 4567060b2f5ff28fb444b38edc2122aff6aa34ce commit: cd3b420bc9cd575a1eaf051463cfb1204599e8d9 [1/16] MultiQueue Skiplist Scheduler v0.202 config: arm-allyesconfig (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 git checkout cd3b420bc9cd575a1eaf051463cfb1204599e8d9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross 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 >>, old ones prefixed by <<): 239 | int __weak arch_sd_sibling_asym_packing(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ 637 | void resched_task(struct task_struct *p) | ^~~~~~~~~~~~ 2243 | int sysctl_schedstats(struct ctl_table *table, int write, | ^~~~~~~~~~~~~~~~~ 2932 | unsigned long nr_active(void) | ^~~~~~~~~ 5880 | void __do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask) | ^~~~~~~~~~~~~~~~~~~~~ 6000 | void resched_cpu(int cpu) | ^~~~~~~~~~~ 6013 | void select_nohz_load_balancer(int stop_tick) | ^~~~~~~~~~~~~~~~~~~~~~~~~ 6017 | void set_cpu_sd_state_idle(void) {} | ^~~~~~~~~~~~~~~~~~~~~ 6071 | void wake_up_idle_cpu(int cpu) | ^~~~~~~~~~~~~~~~ 6334 | void sched_set_stop_task(int cpu, struct task_struct *stop) | ^~~~~~~~~~~~~~~~~~~ kernel/sched/MuQSS.c: In function 'select_leaders': 6783 | bool smt_threads = false; | ^~~~~~~~~~~ kernel/sched/MuQSS.c: In function 'setup_rq_orders': kernel/sched/MuQSS.c:6952:22: warning: unused variable 'i' [-Wunused-variable] 6952 | int cpu, other_cpu, i; | ^ kernel/sched/MuQSS.c: At top level: 7464 | void init_idle_bootup_task(struct task_struct *idle) | ^~~~~~~~~~~~~~~~~~~~~ 7488 | struct task_group *sched_create_group(struct task_group *parent) | ^~~~~~~~~~~~~~~~~~ 7499 | void sched_online_group(struct task_group *tg, struct task_group *parent) | ^~~~~~~~~~~~~~~~~~ 7510 | void sched_destroy_group(struct task_group *tg) | ^~~~~~~~~~~~~~~~~~~ 7516 | void sched_offline_group(struct task_group *tg) | ^~~~~~~~~~~~~~~~~~~ 7607 | .legacy_cftypes = cpu_legacy_files, | ^~~~~~~~~~~~~~~~ kernel/sched/MuQSS.c:7607:20: note: (near initialization for 'cpu_cgrp_subsys.legacy_cftypes') -- 211 | int sched_energy_aware_handler(struct ctl_table *table, int write, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ 493 | void sched_get_rd(struct root_domain *rd) | ^~~~~~~~~~~~ 498 | void sched_put_rd(struct root_domain *rd) | ^~~~~~~~~~~~ 744 | int group_balance_cpu(struct sched_group *sg) | ^~~~~~~~~~~~~~~~~ vim +/arch_sd_sibling_asym_packing +239 kernel/sched/MuQSS.c 238 240 { 241 return 0*SD_ASYM_PACKING; 242 } 243 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org