tree: https://github.com/zen-kernel/zen-kernel 5.4/zen-sauce head: c9a8f36311f14311a3202501c88009f758683c0f commit: 92f669d8f5542fe3981115706a7b9066a0903b4a [14/15] mm: Proactive compaction config: arm-bcm2835_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 92f669d8f5542fe3981115706a7b9066a0903b4a # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=arm If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): mm/compaction.c: In function 'extfrag_hpage_wmark': return extfrag_for_order(zone, HUGETLB_PAGE_ORDER) > wmark; ^~~~~~~~~~~~~~~~~~ HPAGE_PMD_ORDER mm/compaction.c:1865:33: note: each undeclared identifier is reported only once for each function it appears in mm/compaction.c: In function 'node_hpage_should_compact': mm/compaction.c:1874:30: error: 'HUGETLB_PAGE_ORDER' undeclared (first use in this function); did you mean 'HPAGE_PMD_ORDER'? compaction_suitable(zone, HUGETLB_PAGE_ORDER, ^~~~~~~~~~~~~~~~~~ HPAGE_PMD_ORDER mm/compaction.c: In function 'extfrag_hpage_wmark': mm/compaction.c:1866:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ vim +1865 mm/compaction.c 1856 1857 static unsigned int extfrag_hpage_wmark(struct zone *zone, bool low) 1858 { 1859 int node_id, wmark, wmark_low; 1860 1861 node_id = zone->zone_pgdat->node_id; 1862 wmark_low = 100 - compaction_states[node_id].hpage_compaction_effort; 1863 wmark = low ? wmark_low : min(wmark_low + 10, 100); 1864 1866 } 1867 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation