Hi Aaron,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on a97ac8cb24a3c3ad74794adb83717ef1605d1b47]

url:    https://github.com/0day-ci/linux/commits/Aaron-Tomlin/module-core-code-clean-up/20220129-044218
base:   a97ac8cb24a3c3ad74794adb83717ef1605d1b47
config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20220129/202201290517.OgZ0MwIs-lkp(a)intel.com/config)
compiler: mips-linux-gcc (GCC) 11.2.0
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://github.com/0day-ci/linux/commit/3d841e1ce526183860c90d80129f849cf5234b1d
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Aaron-Tomlin/module-core-code-clean-up/20220129-044218
        git checkout 3d841e1ce526183860c90d80129f849cf5234b1d
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash kernel/module/

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

All warnings (new ones prefixed by >>):

>> kernel/module/tree_lookup.c:63:15: warning: no previous prototype for '__mod_tree_insert' [-Wmissing-prototypes]
      63 | noinline void __mod_tree_insert(struct mod_tree_node *node)
         |               ^~~~~~~~~~~~~~~~~
>> kernel/module/tree_lookup.c:68:6: warning: no previous prototype for '__mod_tree_remove' [-Wmissing-prototypes]
      68 | void __mod_tree_remove(struct mod_tree_node *node)
         |      ^~~~~~~~~~~~~~~~~


vim +/__mod_tree_insert +63 kernel/module/tree_lookup.c

    62	
  > 63	noinline void __mod_tree_insert(struct mod_tree_node *node)
    64	{
    65		latch_tree_insert(&node->node, &mod_tree.root, &mod_tree_ops);
    66	}
    67	
  > 68	void __mod_tree_remove(struct mod_tree_node *node)
    69	{
    70		latch_tree_erase(&node->node, &mod_tree.root, &mod_tree_ops);
    71	}
    72	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org