Hi Nicholas, I love your patch! Yet something to improve: [auto build test ERROR on powerpc/next] [also build test ERROR on v5.14-rc6 next-20210816] [cannot apply to scottwood/next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Nicholas-Piggin/powerpc-64s-inte... base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: powerpc-wii_defconfig (attached as .config) compiler: powerpc-linux-gcc (GCC) 11.2.0 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/0day-ci/linux/commit/98b8a35aa718c93ace9df66df6274fe39... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Nicholas-Piggin/powerpc-64s-interrupt-speedups/20210816-153424 git checkout 98b8a35aa718c93ace9df66df6274fe392633f80 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 2392 | bool power_pmu_running(void) | ^~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/power_pmu_running +2392 arch/powerpc/perf/core-book3s.c 2391 2393 { 2394 struct cpu_hw_events *cpuhw; 2395 2396 /* Could this simply test local_paca->pmcregs_in_use? */ 2397 2398 if (!ppmu) 2399 return false; 2400 2401 cpuhw = this_cpu_ptr(&cpu_hw_events); 2402 return cpuhw->n_events; 2403 } 2404 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org