linux-kernel - [ammarfaizi2-block:google/android/kernel/common/android13-5.10 3194/9999] kernel/module.c:4792:6: warning: no previous prototype for function 'android_debug_for_each

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Message-ID: <202203090739.89kwW2Yp-lkp@intel.com>
Date:   Wed, 9 Mar 2022 07:30:39 +0800
From:   kernel test robot <lkp@...el.com>
To:     Elliot Berman <quic_eberman@...cinc.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Todd Kjos <tkjos@...gle.com>
Subject: [ammarfaizi2-block:google/android/kernel/common/android13-5.10
 3194/9999] kernel/module.c:4792:6: warning: no previous prototype for
 function 'android_debug_for_each_module'

Hi Elliot,

FYI, the error/warning still remains.

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android13-5.10
head:   8ffc7ff817fe552592daa2b0de1760e3539663f3
commit: 0bb433e0140efece0a1ce8124283cb68fda33a3f [3194/9999] ANDROID: debug_symbols: Add android_debug_for_each_module
config: i386-randconfig-a013-20220307 (https://download.01.org/0day-ci/archive/20220309/202203090739.89kwW2Yp-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
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/ammarfaizi2/linux-block/commit/0bb433e0140efece0a1ce8124283cb68fda33a3f
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android13-5.10
        git checkout 0bb433e0140efece0a1ce8124283cb68fda33a3f
        # 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=i386 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:4792:6: 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:4792:1: 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 
   1 warning generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for ASYNC_TX_ENABLE_CHANNEL_SWITCH
   Depends on DMADEVICES
   Selected by
   - GKI_HIDDEN_DMA_CONFIGS


vim +/android_debug_for_each_module +4792 kernel/module.c

  4790	
  4791	#ifdef CONFIG_ANDROID_DEBUG_SYMBOLS
> 4792	void android_debug_for_each_module(int (*fn)(const char *mod_name, void *mod_addr, void *data),
  4793		void *data)
  4794	{
  4795		struct module *module;
  4796	
  4797		preempt_disable();
  4798		list_for_each_entry_rcu(module, &modules, list) {
  4799			if (fn(module->name, module->core_layout.base, data))
  4800				goto out;
  4801		}
  4802	out:
  4803		preempt_enable();
  4804	}
  4805	EXPORT_SYMBOL_GPL(android_debug_for_each_module);
  4806	#endif
  4807	

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