Hi Anshuman,

[auto build test ERROR on driver-core/driver-core-testing]
[also build test ERROR on v4.8-rc5]
[cannot apply to next-20160908]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/Anshuman-Khandual/mm-Add-sysfs-interface-to-dump-each-node-s-zonelist-information/20160908-104922
config: x86_64-lkp (attached as .config)
compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/base/memory.c: In function 'dump_zonelist':
>> drivers/base/memory.c:455:4: error: 'zone_names' undeclared (first use in this function)
       zone_names[zonelist->_zonerefs[i].zone_idx],
       ^~~~~~~~~~
   drivers/base/memory.c:455:4: note: each undeclared identifier is reported only once for each function it appears in

vim +/zone_names +455 drivers/base/memory.c

   449		ssize_t count = 0;
   450	
   451		for (i = 0; zonelist->_zonerefs[i].zone; i++) {
   452			count += sprintf(buf + count,
   453				"\t\t(%d) (node %d) (%-7s 0x%pK)\n", i,
   454				zonelist->_zonerefs[i].zone->zone_pgdat->node_id,
 > 455				zone_names[zonelist->_zonerefs[i].zone_idx],
   456				(void *) zonelist->_zonerefs[i].zone);
   457		}
   458		return count;

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