Hi Tatsuya, kernel test robot noticed the following build warnings:
[auto build test WARNING on linus/master] [also build test WARNING on rostedt-trace/for-next v6.9 next-20240523] [cannot apply to rostedt-trace/for-next-urgent] [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/Tatsuya-S/ftrace-Fix-stack-trace-entry-generated-by-ftrace_pid_func/20240526-193149 base: linus/master patch link: https://lore.kernel.org/r/20240526112658.46740-1-tatsuya.s2862%40gmail.com patch subject: [PATCH] ftrace: Fix stack trace entry generated by ftrace_pid_func() config: x86_64-buildonly-randconfig-002-20240526 (https://download.01.org/0day-ci/archive/20240526/[email protected]/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240526/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): >> kernel/trace/ftrace.c:102:6: warning: no previous prototype for function >> 'ftrace_pids_enabled' [-Wmissing-prototypes] 102 | bool ftrace_pids_enabled(struct ftrace_ops *ops) | ^ kernel/trace/ftrace.c:102:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 102 | bool ftrace_pids_enabled(struct ftrace_ops *ops) | ^ | static 1 warning generated. vim +/ftrace_pids_enabled +102 kernel/trace/ftrace.c 101 > 102 bool ftrace_pids_enabled(struct ftrace_ops *ops) 103 { 104 struct trace_array *tr; 105 106 if (!(ops->flags & FTRACE_OPS_FL_PID) || !ops->private) 107 return false; 108 109 tr = ops->private; 110 111 return tr->function_pids != NULL || tr->function_no_pids != NULL; 112 } 113 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
