Re: [PATCH net-next v2 4/5] virtio-net: support rx netdim

[kernel test robot <lkp@intel.com>]

Hi Heng,

kernel test robot noticed the following build errors:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Heng-Qi/virtio-net-returns-whether-napi-is-complete/20231103-040818
base:   net-next/main
patch link:    https://lore.kernel.org/r/12c77098b73313eea8fdc88a3d1d20611444827d.1698929590.git.hengqi%40linux.alibaba.com
patch subject: [PATCH net-next v2 4/5] virtio-net: support rx netdim
config: arm-vexpress_defconfig (https://download.01.org/0day-ci/archive/20231106/202311061237.I4bMaa06-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231106/202311061237.I4bMaa06-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311061237.I4bMaa06-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: net_dim_get_rx_moderation
   >>> referenced by virtio_net.c:3529 (drivers/net/virtio_net.c:3529)
   >>>               drivers/net/virtio_net.o:(virtnet_rx_dim_work) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: net_dim
   >>> referenced by virtio_net.c:2176 (drivers/net/virtio_net.c:2176)
   >>>               drivers/net/virtio_net.o:(virtnet_poll) in archive vmlinux.a

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