tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   d8e87774068af213ab5b058b1b114dc397b577aa
commit: 7ceeb4e77fecb3e02527fe7311b7f7c01d7281a3 [6099/6155] kprobes,lib: kretprobe scalability improvement
config: powerpc-buildonly-randconfig-r001-20221107
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 7aa90b21b453d1ca52fdfccfd7e01e61d9e5b1f1)
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
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7ceeb4e77fecb3e02527fe7311b7f7c01d7281a3
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 7ceeb4e77fecb3e02527fe7311b7f7c01d7281a3
        # 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=powerpc SHELL=/bin/bash lib/

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 >>):

>> lib/test_objpool.c:80:7: warning: no previous prototype for function 'ot_kzalloc' [-Wmissing-prototypes]
   void *ot_kzalloc(long size)
         ^
   lib/test_objpool.c:80:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void *ot_kzalloc(long size)
   ^
   static 
>> lib/test_objpool.c:89:6: warning: no previous prototype for function 'ot_kfree' [-Wmissing-prototypes]
   void ot_kfree(void *ptr, long size)
        ^
   lib/test_objpool.c:89:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void ot_kfree(void *ptr, long size)
   ^
   static 
>> lib/test_objpool.c:97:7: warning: no previous prototype for function 'ot_vmalloc' [-Wmissing-prototypes]
   void *ot_vmalloc(long size)
         ^
   lib/test_objpool.c:97:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void *ot_vmalloc(long size)
   ^
   static 
>> lib/test_objpool.c:106:6: warning: no previous prototype for function 'ot_vfree' [-Wmissing-prototypes]
   void ot_vfree(void *ptr, long size)
        ^
   lib/test_objpool.c:106:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void ot_vfree(void *ptr, long size)
   ^
   static 
   4 warnings generated.


vim +/ot_kzalloc +80 lib/test_objpool.c

    75	
    76	/*
    77	 * memory leakage checking
    78	 */
    79	
  > 80	void *ot_kzalloc(long size)
    81	{
    82		void *ptr = kzalloc(size, GFP_KERNEL);
    83	
    84		if (ptr)
    85			atomic_long_add(size, &g_ot_data.kmalloc.alloc);
    86		return ptr;
    87	}
    88	
  > 89	void ot_kfree(void *ptr, long size)
    90	{
    91		if (!ptr)
    92			return;
    93		atomic_long_add(size, &g_ot_data.kmalloc.free);
    94		kfree(ptr);
    95	}
    96	
  > 97	void *ot_vmalloc(long size)
    98	{
    99		void *ptr = vmalloc(size);
   100	
   101		if (ptr)
   102			atomic_long_add(size, &g_ot_data.vmalloc.alloc);
   103		return ptr;
   104	}
   105	
 > 106	void ot_vfree(void *ptr, long size)
   107	{
   108		if (!ptr)
   109			return;
   110		atomic_long_add(size, &g_ot_data.vmalloc.free);
   111		vfree(ptr);
   112	}
   113	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp