Hi Vlastimil, [auto build test ERROR on v4.6-rc2] [also build test ERROR on next-20160406] [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/Vlastimil-Babka/cpuset-use-static-key-better-and-convert-to-new-API/20160406-164542 config: x86_64-randconfig-x011-201614 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): mm/page_alloc.c: In function 'get_page_from_freelist': >> mm/page_alloc.c:2653:5: error: implicit declaration of function '__cpuset_zone_allowed' [-Werror=implicit-function-declaration] !__cpuset_zone_allowed(zone, gfp_mask)) ^ cc1: some warnings being treated as errors vim +/__cpuset_zone_allowed +2653 mm/page_alloc.c 2647 for_each_zone_zonelist_nodemask(zone, z, zonelist, ac->high_zoneidx, 2648 ac->nodemask) { 2649 unsigned long mark; 2650 2651 if (cpusets_enabled() && 2652 (alloc_flags & ALLOC_CPUSET) && > 2653 !__cpuset_zone_allowed(zone, gfp_mask)) 2654 continue; 2655 /* 2656 * Distribute pages in proportion to the individual --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation