On Wed, 14 Mar 2018 23:20:21 +0800 kbuild test robot <fengguang.wu@xxxxxxxxx> wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/mhocko/mm.git since-4.15 > head: 5c3f7a041df707417532dd64b1d71fc29b24c0fe > commit: 145e9c14cca497b2d02f9edcf9307aad5946172f [382/386] linux/const.h: move UL() macro to include/linux/const.h > config: m68k-sun3_defconfig (attached as .config) > compiler: m68k-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout 145e9c14cca497b2d02f9edcf9307aad5946172f > # save the attached .config to linux build tree > make.cross ARCH=m68k > > All warnings (new ones prefixed by >>): > > arch/m68k/mm/init.c: In function 'print_memmap': > >> arch/m68k/mm/init.c:125:0: warning: "UL" redefined > #define UL(x) ((unsigned long) (x)) > > In file included from include/linux/list.h:8:0, > from include/linux/module.h:9, > from arch/m68k/mm/init.c:11: > include/linux/const.h:6:0: note: this is the location of the previous definition > #define UL(x) (_UL(x)) That's OK - an unrelated patch in linux-next.patch removes that #define.