linux-kernel - Re: [PATCH V3 1/2] powerpc/numa: Update CPU topology when VPHN enabled

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Message-ID: <201706041107.Ri5JRxir%fengguang.wu@intel.com>
Date:   Sun, 4 Jun 2017 11:13:29 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Michael Bringmann <mwb@...ux.vnet.ibm.com>
Cc:     kbuild-all@...org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org,
        Tyrel Datwyler <tyreld@...ux.vnet.ibm.com>,
        Andrew Donnellan <andrew.donnellan@....ibm.com>,
        Sahil Mehta <sahilmehta17@...il.com>,
        Rashmica Gupta <rashmicy@...il.com>,
        Reza Arbab <arbab@...ux.vnet.ibm.com>,
        Ingo Molnar <mingo@...nel.org>,
        John Allen <jallen@...ux.vnet.ibm.com>,
        Michael Bringmann <mwb@...ux.vnet.ibm.com>,
        Paul Mackerras <paulus@...ba.org>,
        Nathan Fontenot <nfont@...ux.vnet.ibm.com>,
        Bharata B Rao <bharata@...ux.vnet.ibm.com>,
        Shailendra Singh <shailendras@...dia.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: Re: [PATCH V3 1/2] powerpc/numa: Update CPU topology when VPHN
 enabled

Hi Michael,

[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.12-rc3 next-20170602]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Michael-Bringmann/powerpc-numa-Update-CPU-topology-when-VPHN-enabled/20170527-052650
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-cell_defconfig (attached as .config)
compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

>> arch/powerpc/mm/numa.c:47:12: error: 'topology_update_needed' defined but not used [-Werror=unused-variable]
    static int topology_update_needed;
               ^~~~~~~~~~~~~~~~~~~~~~
>> arch/powerpc/mm/numa.c:46:12: error: 'topology_inited' defined but not used [-Werror=unused-variable]
    static int topology_inited;
               ^~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors

vim +/topology_update_needed +47 arch/powerpc/mm/numa.c

    40	#include <asm/paca.h>
    41	#include <asm/hvcall.h>
    42	#include <asm/setup.h>
    43	#include <asm/vdso.h>
    44	
    45	static int numa_enabled = 1;
  > 46	static int topology_inited;
  > 47	static int topology_update_needed;
    48	
    49	static char *cmdline __initdata;
    50	

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