tree:   https://github.com/norov/linux demotion
head:   78c3964952da24c07f2e34dc2d485fd2e6d5ba82
commit: e71fae18b9c6ad0f0f71a1f80cff17fdb03bfc3b [4/6] mm/demotion: enable per-page demotion
config: hexagon-randconfig-r021-20210808 (attached as .config)
compiler: clang version 12.0.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/norov/linux/commit/e71fae18b9c6ad0f0f71a1f80cff17fdb03bfc3b
        git remote add norov https://github.com/norov/linux
        git fetch --no-tags norov demotion
        git checkout e71fae18b9c6ad0f0f71a1f80cff17fdb03bfc3b
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=hexagon SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   mm/vmscan.c:524:35: error: cannot take the address of an rvalue of type 'int'
           if (test_bit(NUMA_DEMOTION_FLAG, &numa_demotion_flags))
                                            ^~~~~~~~~~~~~~~~~~~~
   arch/hexagon/include/asm/bitops.h:175:43: note: expanded from macro 'test_bit'
   #define test_bit(nr, addr) __test_bit(nr, addr)
                                             ^~~~
   mm/vmscan.c:527:44: error: cannot take the address of an rvalue of type 'int'
           if (test_bit(NUMA_DEMOTION_REQ_MADV_FLAG, &numa_demotion_flags) &&
                                                     ^~~~~~~~~~~~~~~~~~~~
   arch/hexagon/include/asm/bitops.h:175:43: note: expanded from macro 'test_bit'
   #define test_bit(nr, addr) __test_bit(nr, addr)
                                             ^~~~
>> mm/vmscan.c:528:12: error: use of undeclared identifier 'PG_demote'
                   test_bit(PG_demote, &page->flags))
                            ^
   mm/vmscan.c:536:36: error: cannot take the address of an rvalue of type 'int'
           if (!test_bit(NUMA_DEMOTION_FLAG, &numa_demotion_flags) &&
                                             ^~~~~~~~~~~~~~~~~~~~
   arch/hexagon/include/asm/bitops.h:175:43: note: expanded from macro 'test_bit'
   #define test_bit(nr, addr) __test_bit(nr, addr)
                                             ^~~~
   mm/vmscan.c:537:42: error: cannot take the address of an rvalue of type 'int'
                   !test_bit(NUMA_DEMOTION_REQ_MADV_FLAG, &numa_demotion_flags))
                                                          ^~~~~~~~~~~~~~~~~~~~
   arch/hexagon/include/asm/bitops.h:175:43: note: expanded from macro 'test_bit'
   #define test_bit(nr, addr) __test_bit(nr, addr)
                                             ^~~~
   5 errors generated.


vim +/PG_demote +528 mm/vmscan.c

   521	
   522	static bool can_demote_page(struct page *page)
   523	{
   524		if (test_bit(NUMA_DEMOTION_FLAG, &numa_demotion_flags))
   525			return true;
   526	
   527		if (test_bit(NUMA_DEMOTION_REQ_MADV_FLAG, &numa_demotion_flags) &&
 > 528			test_bit(PG_demote, &page->flags))
   529			return true;
   530	
   531		return false;
   532	}
   533	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org