linux-kernel - Re: [PATCH] powerpc: on crash, kexec'ed kernel needs all CPUs are online

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Message-ID: <201510160813.XiFGrW7J%fengguang.wu@intel.com>
Date:	Fri, 16 Oct 2015 08:27:34 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Laurent Vivier <lvivier@...hat.com>
Cc:	kbuild-all@...org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	Laurent Vivier <lvivier@...hat.com>, dgibson@...hat.com,
	thuth@...hat.com, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc: on crash, kexec'ed kernel needs all CPUs are
 online

Hi Laurent,

[auto build test ERROR on powerpc/next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Laurent-Vivier/powerpc-on-crash-kexec-ed-kernel-needs-all-CPUs-are-online/20151016-030306
config: powerpc-wii_defconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/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/kernel/crash.c: In function 'wake_offline_cpus':
>> arch/powerpc/kernel/crash.c:315:4: error: implicit declaration of function 'cpu_up' [-Werror=implicit-function-declaration]
       cpu_up(cpu);
       ^
   cc1: all warnings being treated as errors

vim +/cpu_up +315 arch/powerpc/kernel/crash.c

   309	{
   310		int cpu = 0;
   311	
   312		for_each_present_cpu(cpu) {
   313			if (!cpu_online(cpu)) {
   314				pr_info("kexec: Waking offline cpu %d.\n", cpu);
 > 315				cpu_up(cpu);
   316			}
   317		}
   318	}

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

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