[ammarfaizi2-block:paulmck/linux-rcu/dev.2023.02.27a 108/108] kernel/rcu/rcutorture.c:3289: undefined reference to `set_nmi_torture'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/dev.2023.02.27a
head:   b171cbcbbd8e5f5f2e0638c5b5b5c77e3cc79007
commit: b171cbcbbd8e5f5f2e0638c5b5b5c77e3cc79007 [108/108] rcutorture: Test NMI diagnostics
config: arm-randconfig-r006-20230305 (https://download.01.org/0day-ci/archive/20230307/202303071217.ajqvt2rz-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/ammarfaizi2/linux-block/commit/b171cbcbbd8e5f5f2e0638c5b5b5c77e3cc79007
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block paulmck/linux-rcu/dev.2023.02.27a
        git checkout b171cbcbbd8e5f5f2e0638c5b5b5c77e3cc79007
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303071217.ajqvt2rz-lkp@intel.com/

All errors (new ones prefixed by >>):

   arm-linux-gnueabi-ld: kernel/rcu/rcutorture.o: in function `rcutorture_test_nmis':
>> kernel/rcu/rcutorture.c:3289: undefined reference to `set_nmi_torture'
>> arm-linux-gnueabi-ld: kernel/rcu/rcutorture.c:3301: undefined reference to `set_nmi_torture'


vim +3289 kernel/rcu/rcutorture.c

  3281	
  3282	static void rcutorture_test_nmis(int n)
  3283	{
  3284	#if IS_BUILTIN(CONFIG_RCU_TORTURE_TEST)
  3285		int cpu;
  3286		int dumpcpu;
  3287		int i;
  3288	
> 3289		set_nmi_torture(nmi_delay, nmi_halt1, nmi_halt2, nmi_halt3);
  3290		for (i = 0; i < n; i++) {
  3291			preempt_disable();
  3292			cpu = smp_processor_id();
  3293			dumpcpu = cpu + 1;
  3294			if (dumpcpu >= nr_cpu_ids)
  3295				dumpcpu = 0;
  3296			pr_alert("%s: CPU %d invoking dump_cpu_task(%d)\n", __func__, cpu, dumpcpu);
  3297			dump_cpu_task(dumpcpu);
  3298			preempt_enable();
  3299			schedule_timeout_uninterruptible(15 * HZ);
  3300		}
> 3301		set_nmi_torture(0, false, false, false);
  3302	#else // #if IS_BUILTIN(CONFIG_RCU_TORTURE_TEST)
  3303		WARN_ONCE(n, "Non-zero rcutorture.test_nmis=%d permitted only when rcutorture is built in.\n", test_nmis);
  3304	#endif // #else // #if IS_BUILTIN(CONFIG_RCU_TORTURE_TEST)
  3305	}
  3306	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests