Hi Jia, [auto build test ERROR on: v4.4-rc1] [also build test ERROR on: next-20151118] url: https://github.com/0day-ci/linux/commits/Jia-He/Improve-bitmap_empty-and-bitmap_full/20151119-103554 config: m68k-allyesconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=m68k All errors (new ones prefixed by >>): kernel/time/Kconfig:155:warning: range is invalid warning: (USB_OTG_FSM && FSL_USB2_OTG && USB_MV_OTG) selects USB_OTG which has unmet direct dependencies (USB_SUPPORT && USB && PM) warning: (SINGLE_MEMORY_CHUNK) selects NEED_MULTIPLE_NODES which has unmet direct dependencies (DISCONTIGMEM || NUMA) warning: (PREEMPT && DEBUG_ATOMIC_SLEEP) selects PREEMPT_COUNT which has unmet direct dependencies (COLDFIRE) warning: (USB_OTG_FSM && FSL_USB2_OTG && USB_MV_OTG) selects USB_OTG which has unmet direct dependencies (USB_SUPPORT && USB && PM) warning: (SINGLE_MEMORY_CHUNK) selects NEED_MULTIPLE_NODES which has unmet direct dependencies (DISCONTIGMEM || NUMA) warning: (PREEMPT && DEBUG_ATOMIC_SLEEP) selects PREEMPT_COUNT which has unmet direct dependencies (COLDFIRE) In file included from include/linux/cpumask.h:11:0, from include/linux/rcupdate.h:40, from include/linux/rbtree.h:34, from include/linux/sched.h:22, from arch/m68k/kernel/asm-offsets.c:14: include/linux/bitmap.h: In function 'bitmap_empty': >> include/linux/bitmap.h:284:2: error: implicit declaration of function 'all_bit_is_zero' [-Werror=implicit-function-declaration] return all_bit_is_zero(src, nbits); ^ include/linux/bitmap.h: In function 'bitmap_full': >> include/linux/bitmap.h:292:2: error: implicit declaration of function 'all_bit_is_one' [-Werror=implicit-function-declaration] return all_bit_is_one(src, nbits); ^ cc1: some warnings being treated as errors make[2]: *** [arch/m68k/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [sub-make] Error 2 vim +/all_bit_is_zero +284 include/linux/bitmap.h 278 279 static inline int bitmap_empty(const unsigned long *src, unsigned nbits) 280 { 281 if (small_const_nbits(nbits)) 282 return ! (*src & BITMAP_LAST_WORD_MASK(nbits)); 283 > 284 return all_bit_is_zero(src, nbits); 285 } 286 287 static inline int bitmap_full(const unsigned long *src, unsigned int nbits) 288 { 289 if (small_const_nbits(nbits)) 290 return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits)); 291 > 292 return all_bit_is_one(src, nbits); 293 } 294 295 static __always_inline int bitmap_weight(const unsigned long *src, unsigned int nbits) --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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