Re: [PATCH v2 2/2] mm: migrate: Allocate the node_demotion structure dynamically

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

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Hi Baolin,

I love your patch! Yet something to improve:

[auto build test ERROR on hnaz-mm/master]
[also build test ERROR on v5.15 next-20211111]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Baolin-Wang/Support-multiple-target-nodes-demotion/20211111-154935
base:   https://github.com/hnaz/linux-mm master
config: m68k-allyesconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 11.2.0
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/0day-ci/linux/commit/fda28dda2298e1ef984376940071c8435e9b1399
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Baolin-Wang/Support-multiple-target-nodes-demotion/20211111-154935
        git checkout fda28dda2298e1ef984376940071c8435e9b1399
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=m68k 

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/migrate.c:1159:23: error: 'target_nodes_max' defined but not used [-Werror=unused-variable]
    1159 | static unsigned short target_nodes_max;
         |                       ^~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/target_nodes_max +1159 mm/migrate.c

  1157	
  1158	static struct demotion_nodes *node_demotion[MAX_NUMNODES] __read_mostly;
> 1159	static unsigned short target_nodes_max;
  1160	

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

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