Hi, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/alexs-kernel-org/mm-skip-less-than-check-for-MAX_NR_ZONES/20240819-111528 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240819031911.367900-1-alexs%40kernel.org patch subject: [PATCH] mm: skip less than check for MAX_NR_ZONES config: openrisc-allnoconfig (https://download.01.org/0day-ci/archive/20240819/202408191739.UV22bvQV-lkp@xxxxxxxxx/config) compiler: or1k-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240819/202408191739.UV22bvQV-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408191739.UV22bvQV-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from include/linux/mm_types.h:18, from include/linux/sched/signal.h:14, from include/linux/ptrace.h:7, from arch/openrisc/kernel/asm-offsets.c:28: >> include/linux/page-flags-layout.h:17:20: error: token "=" is not valid in preprocessor expressions 17 | #elif MAX_NR_ZONES = 2 | ^ make[3]: *** [scripts/Makefile.build:117: arch/openrisc/kernel/asm-offsets.s] Error 1 make[3]: Target 'prepare' not remade because of errors. make[2]: *** [Makefile:1193: prepare0] Error 2 make[2]: Target 'prepare' not remade because of errors. make[1]: *** [Makefile:224: __sub-make] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:224: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +17 include/linux/page-flags-layout.h 7 8 /* 9 * When a memory allocation must conform to specific limitations (such 10 * as being suitable for DMA) the caller will pass in hints to the 11 * allocator in the gfp_mask, in the zone modifier bits. These bits 12 * are used to select a priority ordered list of memory zones which 13 * match the requested limits. See gfp_zone() in include/linux/gfp.h 14 */ 15 #if MAX_NR_ZONES < 2 16 #define ZONES_SHIFT 0 > 17 #elif MAX_NR_ZONES = 2 18 #define ZONES_SHIFT 1 19 #elif MAX_NR_ZONES <= 4 20 #define ZONES_SHIFT 2 21 #elif MAX_NR_ZONES <= 8 22 #define ZONES_SHIFT 3 23 #else 24 #error ZONES_SHIFT "Too many zones configured" 25 #endif 26 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
