linux-kernel - [ammarfaizi2-block:google/android/kernel/common/android13-5.15 1113/5558] kernel/module.c:4789:6: warning: no previous prototype for function 'android_debug_for_each

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Date:   Mon, 28 Mar 2022 06:21:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     Prasad Sodagudi <psodagud@...eaurora.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Yogesh Lal <quic_ylal@...cinc.com>,
        Elliot Berman <eberman@...eaurora.org>
Subject: [ammarfaizi2-block:google/android/kernel/common/android13-5.15
 1113/5558] kernel/module.c:4789:6: warning: no previous prototype for
 function 'android_debug_for_each_module'

Hi Prasad,

FYI, the error/warning still remains.

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android13-5.15
head:   4fa38f9405ba32011fe37e6e77bbbc770026b45d
commit: b2df67a932b5cbd6535de9f1a6e63004992ad014 [1113/5558] ANDROID: android: Create debug_symbols driver
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220328/202203280627.cOFGvbLV-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0f6d9501cf49ce02937099350d08f20c4af86f3d)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/ammarfaizi2/linux-block/commit/b2df67a932b5cbd6535de9f1a6e63004992ad014
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android13-5.15
        git checkout b2df67a932b5cbd6535de9f1a6e63004992ad014
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash

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

All warnings (new ones prefixed by >>):

>> kernel/module.c:4789:6: warning: no previous prototype for function 'android_debug_for_each_module' [-Wmissing-prototypes]
   void android_debug_for_each_module(int (*fn)(const char *mod_name, void *mod_addr, void *data),
        ^
   kernel/module.c:4789:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void android_debug_for_each_module(int (*fn)(const char *mod_name, void *mod_addr, void *data),
   ^
   static 
   kernel/module.c:4809:6: warning: no previous prototype for function 'module_layout' [-Wmissing-prototypes]
   void module_layout(struct module *mod,
        ^
   kernel/module.c:4809:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void module_layout(struct module *mod,
   ^
   static 
   2 warnings generated.


vim +/android_debug_for_each_module +4789 kernel/module.c

  4787	
  4788	#ifdef CONFIG_ANDROID_DEBUG_SYMBOLS
> 4789	void android_debug_for_each_module(int (*fn)(const char *mod_name, void *mod_addr, void *data),
  4790		void *data)
  4791	{
  4792		struct module *module;
  4793		preempt_disable();
  4794		list_for_each_entry_rcu(module, &modules, list) {
  4795			if (fn(module->name, module->core_layout.base, data))
  4796				goto out;
  4797		}
  4798	out:
  4799		preempt_enable();
  4800	}
  4801	EXPORT_SYMBOL_NS_GPL(android_debug_for_each_module, MINIDUMP);
  4802	#endif
  4803	

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