On Sun, 26 May 2024 22:51:53 +0800 kernel test robot <l...@intel.com> wrote:
> 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/20240526/202405262232.l4xh8q6o-...@intel.com/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/20240526/202405262232.l4xh8q6o-...@intel.com/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 <l...@intel.com> > | Closes: > https://lore.kernel.org/oe-kbuild-all/202405262232.l4xh8q6o-...@intel.com/ > > 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. This is because the prototype in linux/ftrace.h is placed in the #ifdef CONFIG_DYNAMIC_FTRACE block. The prototype needs to be moved outside of the block. Thank you, > > > 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 -- Masami Hiramatsu (Google) <mhira...@kernel.org>
