tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core head: b2d5b9cec60fecc72a13191c2c6c05acf60975a5 commit: b5eb4a5f6521d58d5564b8746701bd67a92a2b11 [19/47] sched/dl: Support schedstats for deadline sched class config: hexagon-buildonly-randconfig-r002-20211012 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c3dcf39554dbea780d6cb7e12239451ba47a2668) 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/tip/tip.git/commit/?id=b5... git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git git fetch --no-tags tip sched/core git checkout b5eb4a5f6521d58d5564b8746701bd67a92a2b11 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon 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 >>): struct sched_statistics *stats; ^ kernel/sched/deadline.c:1498:27: error: variable 'stats' set but not used [-Werror,-Wunused-but-set-variable] struct sched_statistics *stats; ^ kernel/sched/deadline.c:1510:27: error: variable 'stats' set but not used [-Werror,-Wunused-but-set-variable] struct sched_statistics *stats; ^ 3 errors generated. vim +/stats +1486 kernel/sched/deadline.c 1482 1483 static inline void 1484 update_stats_wait_start_dl(struct dl_rq *dl_rq, struct sched_dl_entity *dl_se) 1485 { 1487 1488 if (!schedstat_enabled()) 1489 return; 1490 1491 stats = __schedstats_from_dl_se(dl_se); 1492 __update_stats_wait_start(rq_of_dl_rq(dl_rq), dl_task_of(dl_se), stats); 1493 } 1494 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org