[jolsa-perf:bpf/tramp_22 7/21] kernel/trace/ftrace_test.c:7:6: warning: no previous prototype for function 'ftrace_test_0'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/tramp_22
head:   1d891c46bb689a24985cea58f4eddb053d6b1331
commit: d2304746483fe3d68537522df1f8e63993bdd732 [7/21] ftrace: Add test functions
config: hexagon-randconfig-r016-20220707 (https://download.01.org/0day-ci/archive/20220707/202207071637.MKFUUllN-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 66ae1d60bb278793fd651cece264699d522bab84)
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://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/commit/?id=d2304746483fe3d68537522df1f8e63993bdd732
        git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
        git fetch --no-tags jolsa-perf bpf/tramp_22
        git checkout d2304746483fe3d68537522df1f8e63993bdd732
        # 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/trace/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> kernel/trace/ftrace_test.c:7:6: warning: no previous prototype for function 'ftrace_test_0' [-Wmissing-prototypes]
   FUNC(ftrace_test_0)
        ^
   kernel/trace/ftrace_test.c:7:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_0)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
>> kernel/trace/ftrace_test.c:8:6: warning: no previous prototype for function 'ftrace_test_1' [-Wmissing-prototypes]
   FUNC(ftrace_test_1)
        ^
   kernel/trace/ftrace_test.c:8:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_1)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
>> kernel/trace/ftrace_test.c:9:6: warning: no previous prototype for function 'ftrace_test_2' [-Wmissing-prototypes]
   FUNC(ftrace_test_2)
        ^
   kernel/trace/ftrace_test.c:9:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_2)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
>> kernel/trace/ftrace_test.c:10:6: warning: no previous prototype for function 'ftrace_test_3' [-Wmissing-prototypes]
   FUNC(ftrace_test_3)
        ^
   kernel/trace/ftrace_test.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_3)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
>> kernel/trace/ftrace_test.c:11:6: warning: no previous prototype for function 'ftrace_test_4' [-Wmissing-prototypes]
   FUNC(ftrace_test_4)
        ^
   kernel/trace/ftrace_test.c:11:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_4)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
>> kernel/trace/ftrace_test.c:12:6: warning: no previous prototype for function 'ftrace_test_5' [-Wmissing-prototypes]
   FUNC(ftrace_test_5)
        ^
   kernel/trace/ftrace_test.c:12:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_5)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
>> kernel/trace/ftrace_test.c:13:6: warning: no previous prototype for function 'ftrace_test_6' [-Wmissing-prototypes]
   FUNC(ftrace_test_6)
        ^
   kernel/trace/ftrace_test.c:13:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_6)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
>> kernel/trace/ftrace_test.c:14:6: warning: no previous prototype for function 'ftrace_test_7' [-Wmissing-prototypes]
   FUNC(ftrace_test_7)
        ^
   kernel/trace/ftrace_test.c:14:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_7)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
>> kernel/trace/ftrace_test.c:15:6: warning: no previous prototype for function 'ftrace_test_8' [-Wmissing-prototypes]
   FUNC(ftrace_test_8)
        ^
   kernel/trace/ftrace_test.c:15:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_8)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
>> kernel/trace/ftrace_test.c:16:6: warning: no previous prototype for function 'ftrace_test_9' [-Wmissing-prototypes]
   FUNC(ftrace_test_9)
        ^
   kernel/trace/ftrace_test.c:16:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   FUNC(ftrace_test_9)
   ^
   static 
   kernel/trace/ftrace_test.c:3:23: note: expanded from macro 'FUNC'
   #define FUNC(__name)            \
                                   ^
   10 warnings generated.


vim +/ftrace_test_0 +7 kernel/trace/ftrace_test.c

     6	
   > 7	FUNC(ftrace_test_0)
   > 8	FUNC(ftrace_test_1)
   > 9	FUNC(ftrace_test_2)
  > 10	FUNC(ftrace_test_3)
  > 11	FUNC(ftrace_test_4)
  > 12	FUNC(ftrace_test_5)
  > 13	FUNC(ftrace_test_6)
  > 14	FUNC(ftrace_test_7)
  > 15	FUNC(ftrace_test_8)
  > 16	FUNC(ftrace_test_9)

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https://01.org/lkp