Hi Zhang, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on tip/irq/core] [also build test WARNING on linus/master v6.0 next-20221011] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Zhang-Xincheng/interrupt-debug-for-discovering-frequent-interrupts/20221011-135800 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 36de4f94197318e45ba77badb5b07274f5bc72a9 config: hexagon-randconfig-r045-20221010 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920) 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/intel-lab-lkp/linux/commit/70d1ccdeb3cc035e44adfd98df109d31ed9af116 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Zhang-Xincheng/interrupt-debug-for-discovering-frequent-interrupts/20221011-135800 git checkout 70d1ccdeb3cc035e44adfd98df109d31ed9af116 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash kernel/irq/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> kernel/irq/spurious.c:315:6: warning: no previous prototype for function 'report_frequent_irq' [-Wmissing-prototypes] void report_frequent_irq(struct irq_desc *desc, irqreturn_t action_ret) ^ kernel/irq/spurious.c:315:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void report_frequent_irq(struct irq_desc *desc, irqreturn_t action_ret) ^ static 1 warning generated. vim +/report_frequent_irq +315 kernel/irq/spurious.c 313 314 #else > 315 void report_frequent_irq(struct irq_desc *desc, irqreturn_t action_ret) 316 { 317 } 318 #endif /* CONFIG_FREQUENT_IRQ_DEBUG */ 319 -- 0-DAY CI Kernel Test Service https://01.org/lkp