tree: https://android.googlesource.com/kernel/common android12-5.10 head: 8cd9aa93b7269460e8d5e4407738f21fe5d6e720 commit: 8cd9aa93b7269460e8d5e4407738f21fe5d6e720 [1/1] ANDROID: implement wrapper for reverse migration config: x86_64-randconfig-c022-20210420 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): git remote add android-common https://android.googlesource.com/kernel/common git fetch --no-tags android-common android12-5.10 git checkout 8cd9aa93b7269460e8d5e4407738f21fe5d6e720 # save the attached .config to linux build tree make W=1 W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 766 | unsigned long isolate_and_split_free_page(struct page *page, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from mm/compaction.c:14: include/linux/compaction.h:241:22: note: previous definition of 'isolate_and_split_free_page' was here 241 | static unsigned long isolate_and_split_free_page(struct page *page, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/compaction.c:56:27: warning: 'HPAGE_FRAG_CHECK_INTERVAL_MSEC' defined but not used [-Wunused-const-variable=] 56 | static const unsigned int HPAGE_FRAG_CHECK_INTERVAL_MSEC = 500; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from mm/compaction.c:14: include/linux/compaction.h:241:22: warning: 'isolate_and_split_free_page' defined but not used [-Wunused-function] 241 | static unsigned long isolate_and_split_free_page(struct page *page, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/isolate_and_split_free_page +766 mm/compaction.c 765 767 struct list_head *list) 768 { 769 unsigned long isolated; 770 unsigned int order; 771 772 if (!PageBuddy(page)) 773 return 0; 774 775 order = buddy_order(page); 776 isolated = __isolate_free_page(page, order); 777 if (!isolated) 778 return 0; 779 780 set_page_private(page, order); 781 list_add(&page->lru, list); 782 783 split_map_pages(list); 784 785 return isolated; 786 } 787 EXPORT_SYMBOL_GPL(isolate_and_split_free_page); 788 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org