Hi Sumit, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on arm64/for-next/core] [also build test ERROR on arm-soc/for-next arm/for-next xlnx/master kvmarm/next linus/master v5.7-rc5 next-20200514] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Sumit-Garg/arm64-Enable-perf-eve... base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from include/asm-generic/percpu.h:7, from arch/arm/include/asm/percpu.h:39, from include/linux/percpu.h:13, from include/linux/context_tracking_state.h:5, from include/linux/vtime.h:5, from include/linux/hardirq.h:8, from include/linux/interrupt.h:11, from include/linux/perf/arm_pmu.h:11, from drivers/perf/arm_pmu.c:20: drivers/perf/arm_pmu.c: In function 'arm_pmu_irq_is_nmi': 613 | irq_ops = per_cpu(cpu_irq_ops, smp_processor_id()); | ^~~~~~~~~~~ include/linux/percpu-defs.h:219:47: note: in definition of macro '__verify_pcpu_ptr' 219 | const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; | ^~~ include/linux/percpu-defs.h:269:29: note: in expansion of macro 'per_cpu_ptr' 269 | #define per_cpu(var, cpu) (*per_cpu_ptr(&(var), cpu)) | ^~~~~~~~~~~ 613 | irq_ops = per_cpu(cpu_irq_ops, smp_processor_id()); | ^~~~~~~ drivers/perf/arm_pmu.c:613:20: note: each undeclared identifier is reported only once for each function it appears in 613 | irq_ops = per_cpu(cpu_irq_ops, smp_processor_id()); | ^~~~~~~~~~~ include/linux/percpu-defs.h:219:47: note: in definition of macro '__verify_pcpu_ptr' 219 | const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; | ^~~ include/linux/percpu-defs.h:269:29: note: in expansion of macro 'per_cpu_ptr' 269 | #define per_cpu(var, cpu) (*per_cpu_ptr(&(var), cpu)) | ^~~~~~~~~~~ 613 | irq_ops = per_cpu(cpu_irq_ops, smp_processor_id()); | ^~~~~~~ 614 | if (irq_ops == &pmunmi_ops || irq_ops == &percpu_pmunmi_ops) | ^~~~~~~~~~ 614 | if (irq_ops == &pmunmi_ops || irq_ops == &percpu_pmunmi_ops) | ^~~~~~~~~~~~~~~~~ 618 | } | ^ vim +613 drivers/perf/arm_pmu.c 608 609 bool arm_pmu_irq_is_nmi(void) 610 { 611 const struct pmu_irq_ops *irq_ops; 612 615 return true; 616 else 617 return false; 619 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org