Hi pan, [auto build test ERROR on v4.5-rc5] [also build test ERROR on next-20160223] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Pan-Xinhui/asm-generic-cmpxchg-use-BUILD_BUG-when-detect-unfit-cmp-xchg-size/20160223-164522 config: parisc-c3000_defconfig (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=parisc All errors (new ones prefixed by >>): In file included from arch/parisc/include/asm/cmpxchg.h:81:0, from arch/parisc/include/asm/atomic.h:9, from include/linux/atomic.h:4, from arch/parisc/include/asm/bitops.h:12, from include/linux/bitops.h:36, from include/linux/kernel.h:10, from arch/parisc/include/asm/bug.h:4, from include/linux/bug.h:4, from include/linux/page-flags.h:9, from kernel/bounds.c:9: include/asm-generic/cmpxchg-local.h: In function '__cmpxchg_local_generic': >> include/asm-generic/cmpxchg-local.h:21:3: error: implicit declaration of function 'BUILD_BUG' [-Werror=implicit-function-declaration] BUILD_BUG(); ^ cc1: some warnings being treated as errors make[2]: *** [kernel/bounds.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 +/BUILD_BUG +21 include/asm-generic/cmpxchg-local.h 15 unsigned long flags, prev; 16 17 /* 18 * Sanity checking, compile-time. 19 */ 20 if (size == 8 && sizeof(unsigned long) != 8) > 21 BUILD_BUG(); 22 23 raw_local_irq_save(flags); 24 switch (size) { --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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