tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   771a207d1ee9f38da8c0cee1412228f18b900bac
commit: e37dfd65731dc4f001fa7dfa7f705e6840017d5a [7077/9540] perf: arm_cspmu: Add support for ARM CoreSight PMU driver
config: loongarch-allmodconfig
compiler: loongarch64-linux-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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=e37dfd65731dc4f001fa7dfa7f705e6840017d5a
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout e37dfd65731dc4f001fa7dfa7f705e6840017d5a
        # 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=loongarch SHELL=/bin/bash drivers/iio/magnetometer/ drivers/perf/arm_cspmu/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

Note: the linux-next/master HEAD 771a207d1ee9f38da8c0cee1412228f18b900bac builds fine.
      It may have been fixed somewhere.

All errors (new ones prefixed by >>):

   drivers/perf/arm_cspmu/arm_cspmu.c: In function 'arm_cspmu_get_cpus':
>> drivers/perf/arm_cspmu/arm_cspmu.c:1105:29: error: implicit declaration of function 'get_acpi_id_for_cpu' [-Werror=implicit-function-declaration]
    1105 |                             get_acpi_id_for_cpu(cpu)) {
         |                             ^~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/get_acpi_id_for_cpu +1105 drivers/perf/arm_cspmu/arm_cspmu.c

  1090	
  1091	static int arm_cspmu_get_cpus(struct arm_cspmu *cspmu)
  1092	{
  1093		struct device *dev;
  1094		struct acpi_apmt_node *apmt_node;
  1095		int affinity_flag;
  1096		int cpu;
  1097	
  1098		dev = cspmu->pmu.dev;
  1099		apmt_node = cspmu->apmt_node;
  1100		affinity_flag = apmt_node->flags & ACPI_APMT_FLAGS_AFFINITY;
  1101	
  1102		if (affinity_flag == ACPI_APMT_FLAGS_AFFINITY_PROC) {
  1103			for_each_possible_cpu(cpu) {
  1104				if (apmt_node->proc_affinity ==
> 1105				    get_acpi_id_for_cpu(cpu)) {
  1106					cpumask_set_cpu(cpu, &cspmu->associated_cpus);
  1107					break;
  1108				}
  1109			}
  1110		} else {
  1111			for_each_possible_cpu(cpu) {
  1112				if (arm_cspmu_find_cpu_container(
  1113					    cpu, apmt_node->proc_affinity))
  1114					continue;
  1115	
  1116				cpumask_set_cpu(cpu, &cspmu->associated_cpus);
  1117			}
  1118		}
  1119	
  1120		if (cpumask_empty(&cspmu->associated_cpus)) {
  1121			dev_dbg(dev, "No cpu associated with the PMU\n");
  1122			return -ENODEV;
  1123		}
  1124	
  1125		return 0;
  1126	}
  1127	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp