Hi Nicholas, I love your patch! Yet something to improve: [auto build test ERROR on openrisc/for-next] [also build test ERROR on sparc/master linus/master asm-generic/master v5.8-rc7 next-20200727] [cannot apply to nios2/for-linus] [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/Nicholas-Piggin/Use-asm-generic-for-mmu_context-no-op-functions/20200728-113854 base: https://github.com/openrisc/linux.git for-next config: c6x-allyesconfig (attached as .config) compiler: c6x-elf-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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=c6x If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from ./arch/c6x/include/generated/asm/mmu_context.h:1, from include/linux/mmu_context.h:5, from kernel//sched/sched.h:54, from kernel//sched/core.c:9: include/asm-generic/mmu_context.h: In function 'activate_mm': >> include/asm-generic/mmu_context.h:59:2: error: implicit declaration of function 'switch_mm' [-Werror=implicit-function-declaration] 59 | switch_mm(prev_mm, next_mm, current); | ^~~~~~~~~ cc1: some warnings being treated as errors -- In file included from ./arch/c6x/include/generated/asm/mmu_context.h:1, from include/linux/mmu_context.h:5, from kernel//sched/sched.h:54, from kernel//sched/rt.c:6: include/asm-generic/mmu_context.h: In function 'activate_mm': >> include/asm-generic/mmu_context.h:59:2: error: implicit declaration of function 'switch_mm' [-Werror=implicit-function-declaration] 59 | switch_mm(prev_mm, next_mm, current); | ^~~~~~~~~ kernel//sched/rt.c: At top level: kernel//sched/rt.c:668:6: warning: no previous prototype for 'sched_rt_bandwidth_account' [-Wmissing-prototypes] 668 | bool sched_rt_bandwidth_account(struct rt_rq *rt_rq) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/switch_mm +59 include/asm-generic/mmu_context.h 49 50 /** 51 * activate_mm - called after exec switches the current task to a new mm, to switch to it 52 * @prev_mm: previous mm of this task 53 * @next_mm: new mm 54 */ 55 #ifndef activate_mm 56 static inline void activate_mm(struct mm_struct *prev_mm, 57 struct mm_struct *next_mm) 58 { > 59 switch_mm(prev_mm, next_mm, current); 60 } 61 #endif 62 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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