linux-kernel - Re: Re: [RFC][PATCH] sched: Start stopper early

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Date:	Wed, 7 Oct 2015 21:36:28 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	kbuild-all@...org, Peter Zijlstra <peterz@...radead.org>,
	heiko.carstens@...ibm.com, linux-kernel@...r.kernel.org,
	Tejun Heo <tj@...nel.org>, Ingo Molnar <mingo@...nel.org>,
	Rik van Riel <riel@...hat.com>
Subject: Re: Re: [RFC][PATCH] sched: Start stopper early

Hi Oleg,

[auto build test ERROR on v4.3-rc4 -- if it's inappropriate base, please ignore]

config: x86_64-randconfig-x019-201540 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   kernel/cpu.c: In function 'take_cpu_down':
>> kernel/cpu.c:347:2: error: implicit declaration of function 'stop_machine_park' [-Werror=implicit-function-declaration]
     stop_machine_park(param->hcpu);
     ^
   cc1: some warnings being treated as errors

vim +/stop_machine_park +347 kernel/cpu.c

   341			return err;
   342	
   343		cpu_notify(CPU_DYING | param->mod, param->hcpu);
   344		/* Give up timekeeping duties */
   345		tick_handover_do_timer();
   346		/* Park the stopper thread */
 > 347		stop_machine_park(param->hcpu);
   348		return 0;
   349	}
   350	

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Download attachment ".config.gz" of type "application/octet-stream" (18806 bytes)