linux-kernel - Re: [PATCH V3] mm: Add sysfs interface to dump each node's zonelist information

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Date:   Tue, 6 Sep 2016 17:05:13 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Cc:     kbuild-all@...org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: [PATCH V3] mm: Add sysfs interface to dump each node's zonelist
 information

Hi Anshuman,

[auto build test ERROR on driver-core/driver-core-testing]
[also build test ERROR on v4.8-rc5 next-20160906]
[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/20160906-163752
config: x86_64-randconfig-x019-201636 (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) (%-10s %lx)\n", i,
   454				zonelist->_zonerefs[i].zone->zone_pgdat->node_id,
 > 455				zone_names[zonelist->_zonerefs[i].zone_idx],
   456				(unsigned long) zonelist->_zonerefs[i].zone);
   457		}
   458		return count;

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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