[kbuild-all] Re: [PATCH v2] sched: Provide Kconfig support for default dynamic preempt mode

Hi Frederic, I love your patch! Yet something to improve: [auto build test ERROR on tip/master] [also build test ERROR on tip/sched/core linus/master linux/master v5.15-rc1 next-20210913] [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] url: https://github.com/0day-ci/linux/commits/Frederic-Weisbecker/sched-Provid... base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 5448a9e9f16a1b95790df7ef58686331aa3935a6 config: mips-randconfig-r014-20210913 (attached as .config) compiler: mips64-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://github.com/0day-ci/linux/commit/647b5f90d1328cf6cba7a89c957255a3c... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Frederic-Weisbecker/sched-Provide-Kconfig-support-for-default-dynamic-preempt-mode/20210913-191741 git checkout 647b5f90d1328cf6cba7a89c957255a3c38c4e86 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=mips 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 >>): In file included from include/linux/list.h:9, from include/linux/smp.h:12, from arch/mips/include/asm/cpu-type.h:12, from arch/mips/include/asm/timex.h:19, from include/linux/timex.h:65, from include/linux/time32.h:13, from include/linux/time.h:60, from include/linux/compat.h:10, from arch/mips/kernel/asm-offsets.c:12: include/linux/kernel.h: In function 'might_resched': 104 | static_call_mod(might_resched)(); | ^~~~~~~~~~~~~~~ | static_call In file included from include/linux/sched/signal.h:7, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/compat.h:17, from arch/mips/kernel/asm-offsets.c:12: include/linux/sched.h: In function '_cond_resched': 2022 | return static_call_mod(cond_resched)(); | ^~~~~~~~~~~~ | _cond_resched include/linux/sched.h:2022:32: note: each undeclared identifier is reported only once for each function it appears in arch/mips/kernel/asm-offsets.c: At top level: arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for 'output_ptreg_defines' [-Wmissing-prototypes] 26 | void output_ptreg_defines(void) | ^~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for 'output_task_defines' [-Wmissing-prototypes] 78 | void output_task_defines(void) | ^~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:92:6: warning: no previous prototype for 'output_thread_info_defines' [-Wmissing-prototypes] 92 | void output_thread_info_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:108:6: warning: no previous prototype for 'output_thread_defines' [-Wmissing-prototypes] 108 | void output_thread_defines(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:136:6: warning: no previous prototype for 'output_thread_fpu_defines' [-Wmissing-prototypes] 136 | void output_thread_fpu_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:179:6: warning: no previous prototype for 'output_mm_defines' [-Wmissing-prototypes] 179 | void output_mm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:240:6: warning: no previous prototype for 'output_sc_defines' [-Wmissing-prototypes] 240 | void output_sc_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:253:6: warning: no previous prototype for 'output_signal_defined' [-Wmissing-prototypes] 253 | void output_signal_defined(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:320:6: warning: no previous prototype for 'output_pbe_defines' [-Wmissing-prototypes] 320 | void output_pbe_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:332:6: warning: no previous prototype for 'output_pm_defines' [-Wmissing-prototypes] 332 | void output_pm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:346:6: warning: no previous prototype for 'output_kvm_defines' [-Wmissing-prototypes] 346 | void output_kvm_defines(void) | ^~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from include/linux/list.h:9, from include/linux/smp.h:12, from arch/mips/include/asm/cpu-type.h:12, from arch/mips/include/asm/timex.h:19, from include/linux/timex.h:65, from include/linux/time32.h:13, from include/linux/time.h:60, from include/linux/compat.h:10, from arch/mips/kernel/asm-offsets.c:12: include/linux/kernel.h: In function 'might_resched': 104 | static_call_mod(might_resched)(); | ^~~~~~~~~~~~~~~ | static_call In file included from include/linux/sched/signal.h:7, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/compat.h:17, from arch/mips/kernel/asm-offsets.c:12: include/linux/sched.h: In function '_cond_resched': 2022 | return static_call_mod(cond_resched)(); | ^~~~~~~~~~~~ | _cond_resched include/linux/sched.h:2022:32: note: each undeclared identifier is reported only once for each function it appears in arch/mips/kernel/asm-offsets.c: At top level: arch/mips/kernel/asm-offsets.c:26:6: warning: no previous prototype for 'output_ptreg_defines' [-Wmissing-prototypes] 26 | void output_ptreg_defines(void) | ^~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:78:6: warning: no previous prototype for 'output_task_defines' [-Wmissing-prototypes] 78 | void output_task_defines(void) | ^~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:92:6: warning: no previous prototype for 'output_thread_info_defines' [-Wmissing-prototypes] 92 | void output_thread_info_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:108:6: warning: no previous prototype for 'output_thread_defines' [-Wmissing-prototypes] 108 | void output_thread_defines(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:136:6: warning: no previous prototype for 'output_thread_fpu_defines' [-Wmissing-prototypes] 136 | void output_thread_fpu_defines(void) | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:179:6: warning: no previous prototype for 'output_mm_defines' [-Wmissing-prototypes] 179 | void output_mm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:240:6: warning: no previous prototype for 'output_sc_defines' [-Wmissing-prototypes] 240 | void output_sc_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:253:6: warning: no previous prototype for 'output_signal_defined' [-Wmissing-prototypes] 253 | void output_signal_defined(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:320:6: warning: no previous prototype for 'output_pbe_defines' [-Wmissing-prototypes] 320 | void output_pbe_defines(void) | ^~~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:332:6: warning: no previous prototype for 'output_pm_defines' [-Wmissing-prototypes] 332 | void output_pm_defines(void) | ^~~~~~~~~~~~~~~~~ arch/mips/kernel/asm-offsets.c:346:6: warning: no previous prototype for 'output_kvm_defines' [-Wmissing-prototypes] 346 | void output_kvm_defines(void) | ^~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:121: arch/mips/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1225: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:219: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +104 include/linux/kernel.h b965f1ddb47daa Peter Zijlstra (Intel 2021-01-18 101) b965f1ddb47daa Peter Zijlstra (Intel 2021-01-18 102) static __always_inline void might_resched(void) b965f1ddb47daa Peter Zijlstra (Intel 2021-01-18 103) { ef72661e28c64a Peter Zijlstra 2021-01-25 @104 static_call_mod(might_resched)(); b965f1ddb47daa Peter Zijlstra (Intel 2021-01-18 105) } b965f1ddb47daa Peter Zijlstra (Intel 2021-01-18 106) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org