tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b6fc3fddade7a194bd141a49f2689e50f796ef46
commit: 3f6b5157c510e46af5e8067fd309c2a575264b02 [5980/6121] lib: objpool test module added
config: sh-allmodconfig
compiler: sh4-linux-gcc (GCC) 12.1.0
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/next/linux-next.git/commit/?id=3f6b5157c510e46af5e8067fd309c2a575264b02
        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 3f6b5157c510e46af5e8067fd309c2a575264b02
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sh 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:82:7: warning: no previous prototype for 'ot_kzalloc' [-Wmissing-prototypes]
      82 | void *ot_kzalloc(long size)
         |       ^~~~~~~~~~
>> lib/test_objpool.c:91:6: warning: no previous prototype for 'ot_kfree' [-Wmissing-prototypes]
      91 | void ot_kfree(void *ptr, long size)
         |      ^~~~~~~~
>> lib/test_objpool.c:99:7: warning: no previous prototype for 'ot_vmalloc' [-Wmissing-prototypes]
      99 | void *ot_vmalloc(long size)
         |       ^~~~~~~~~~
>> lib/test_objpool.c:108:6: warning: no previous prototype for 'ot_vfree' [-Wmissing-prototypes]
     108 | void ot_vfree(void *ptr, long size)
         |      ^~~~~~~~


vim +/ot_kzalloc +82 lib/test_objpool.c

    77	
    78	/*
    79	 * memory leakage checking
    80	 */
    81	
  > 82	void *ot_kzalloc(long size)
    83	{
    84		void *ptr = kzalloc(size, GFP_KERNEL);
    85	
    86		if (ptr)
    87			atomic_long_add(size, &g_ot_data.kmalloc.alloc);
    88		return ptr;
    89	}
    90	
  > 91	void ot_kfree(void *ptr, long size)
    92	{
    93		if (!ptr)
    94			return;
    95		atomic_long_add(size, &g_ot_data.kmalloc.free);
    96		kfree(ptr);
    97	}
    98	
  > 99	void *ot_vmalloc(long size)
   100	{
   101		void *ptr = vmalloc(size);
   102	
   103		if (ptr)
   104			atomic_long_add(size, &g_ot_data.vmalloc.alloc);
   105		return ptr;
   106	}
   107	
 > 108	void ot_vfree(void *ptr, long size)
   109	{
   110		if (!ptr)
   111			return;
   112		atomic_long_add(size, &g_ot_data.vmalloc.free);
   113		vfree(ptr);
   114	}
   115	

-- 
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https://01.org/lkp