[kbuild-all] Re: [tip:sched/core 14/47] kernel/sched/fair.c:893:22: error: variable 'p' set but not used

On Tue, Oct 12, 2021 at 11:57:41AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core > head: b2d5b9cec60fecc72a13191c2c6c05acf60975a5 > commit: 60f2415e19d3948641149ac6aca137a7be1d1952 [14/47] sched: Make schedstats helpers independent of fair 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=60... > 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 60f2415e19d3948641149ac6aca137a7be1d1952 > # 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 >>): > > kernel/sched/fair.c:860:28: error: variable 'stats' set but not used [-Werror,-Wunused-but-set-variable] > struct sched_statistics *stats; > ^ > kernel/sched/fair.c:892:27: error: variable 'stats' set but not used [-Werror,-Wunused-but-set-variable] > struct sched_statistics *stats; > ^ >>> kernel/sched/fair.c:893:22: error: variable 'p' set but not used [-Werror,-Wunused-but-set-variable] > struct task_struct *p = NULL; > ^ > kernel/sched/fair.c:910:22: error: variable 'p' set but not used [-Werror,-Wunused-but-set-variable] > struct task_struct *p = NULL; > ^ > kernel/sched/fair.c:909:27: error: variable 'stats' set but not used [-Werror,-Wunused-but-set-variable] > struct sched_statistics *stats; > ^ >>> kernel/sched/fair.c:936:22: error: variable 'tsk' set but not used [-Werror,-Wunused-but-set-variable] > struct task_struct *tsk = NULL; > ^ > kernel/sched/fair.c:935:27: error: variable 'stats' set but not used [-Werror,-Wunused-but-set-variable] > struct sched_statistics *stats; > ^ > kernel/sched/fair.c:4451:28: error: variable 'stats' set but not used [-Werror,-Wunused-but-set-variable] > struct sched_statistics *stats; > ^ > 8 errors generated. Again, I have absolutely no intention of fixing this. IMO this is the compiler being a total pain in the arse. Please stop reporting this.