Re: [linux-next:master 3093/3958] drivers/acpi/numa/hmat.c:658: undefined reference to `hmem_register_device'

[Andrew Morton <akpm@linux-foundation.org>]

(cc Vishal & Joao)

On Mon, 31 Aug 2020 15:11:42 +0800 kernel test robot <lkp@intel.com> wrote:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   b36c969764ab12faebb74711c942fa3e6eaf1e96
> commit: f7782cc946fea99b8a4a0a83b6c3775a6beff8ce [3093/3958] ACPI: HMAT: refactor hmat_register_target_device to hmem_register_device
> config: arm64-randconfig-r016-20200831 (attached as .config)
> compiler: aarch64-linux-gcc (GCC) 9.3.0
> 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
>         git checkout f7782cc946fea99b8a4a0a83b6c3775a6beff8ce
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 
> 
> 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 >>):
> 
>    aarch64-linux-ld: drivers/acpi/numa/hmat.o: in function `hmat_register_target_devices':
> >> drivers/acpi/numa/hmat.c:658: undefined reference to `hmem_register_device'
> 
> # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f7782cc946fea99b8a4a0a83b6c3775a6beff8ce
> git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> git fetch --no-tags linux-next master
> git checkout f7782cc946fea99b8a4a0a83b6c3775a6beff8ce
> vim +658 drivers/acpi/numa/hmat.c
> 
>    643	
>    644	static void hmat_register_target_devices(struct memory_target *target)
>    645	{
>    646		struct resource *res;
>    647	
>    648		/*
>    649		 * Do not bother creating devices if no driver is available to
>    650		 * consume them.
>    651		 */
>    652		if (!IS_ENABLED(CONFIG_DEV_DAX_HMEM))
>    653			return;
>    654	
>    655		for (res = target->memregions.child; res; res = res->sibling) {
>    656			int target_nid = acpi_map_pxm_to_node(target->memory_pxm);
>    657	
>  > 658			hmem_register_device(target_nid, res);
>    659		}
>    660	}
>    661	
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org