Re: [PATCH] kernel: cpu: send CPU_UP_CANCELLED notification

[kbuild test robot]

Hi Channagoud,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.12 next-20170714]
[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/Channagoud-Kadabi/kernel-cpu-send-CPU_UP_CANCELLED-notification/20170715-152954
config: x86_64-randconfig-x019-201728 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   kernel/cpu.c: In function 'cpuhp_up_callbacks':
>> kernel/cpu.c:368:4: error: implicit declaration of function 'cpu_notify' [-Werror=implicit-function-declaration]
       cpu_notify(CPU_UP_CANCELED, cpu);
       ^~~~~~~~~~
>> kernel/cpu.c:368:15: error: 'CPU_UP_CANCELED' undeclared (first use in this function)
       cpu_notify(CPU_UP_CANCELED, cpu);
                  ^~~~~~~~~~~~~~~
   kernel/cpu.c:368:15: note: each undeclared identifier is reported only once for each function it appears in
   cc1: some warnings being treated as errors

vim +/cpu_notify +368 kernel/cpu.c

   355	
   356	static int cpuhp_up_callbacks(unsigned int cpu, struct cpuhp_cpu_state *st,
   357				      enum cpuhp_state target)
   358	{
   359		enum cpuhp_state prev_state = st->state;
   360		int ret = 0;
   361	
   362		while (st->state < target) {
   363			st->state++;
   364			ret = cpuhp_invoke_callback(cpu, st->state, true, NULL);
   365			if (ret) {
   366				st->target = prev_state;
   367				undo_cpu_up(cpu, st);
 > 368				cpu_notify(CPU_UP_CANCELED, cpu);
   369				break;
   370			}
   371		}
   372		return ret;
   373	}
   374	

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