linux-kernel - [mingo-tip:sched/headers 108/2579] init/main.c:887:13: warning: no previous prototype for function 'init_per_task

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Date:   Wed, 20 Apr 2022 05:28:09 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [mingo-tip:sched/headers 108/2579] init/main.c:887:13: warning: no
 previous prototype for function 'init_per_task_early'

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head:   49e1ec6c70a6eb4b7de9250a455b8b63eb42afbe
commit: f1d7f3a4c6b375645905a0b0b71dd202c29af929 [108/2579] headers/deps: cpusets: Move task_struct::mems_allowed_seq to per_task()
config: i386-randconfig-a013-20220418 (https://download.01.org/0day-ci/archive/20220420/202204200512.Po4Qok6p-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 429cbac0390654f90bba18a41799464adf31a5ec)
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/mingo/tip.git/commit/?id=f1d7f3a4c6b375645905a0b0b71dd202c29af929
        git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
        git fetch --no-tags mingo-tip sched/headers
        git checkout f1d7f3a4c6b375645905a0b0b71dd202c29af929
        # 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=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 >>):

   init/main.c:783:20: warning: no previous prototype for function 'mem_encrypt_init' [-Wmissing-prototypes]
   void __init __weak mem_encrypt_init(void) { }
                      ^
   init/main.c:783:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init __weak mem_encrypt_init(void) { }
   ^
   static 
>> init/main.c:887:13: warning: no previous prototype for function 'init_per_task_early' [-Wmissing-prototypes]
   void __init init_per_task_early(void)
               ^
   init/main.c:887:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init init_per_task_early(void)
   ^
   static 
   2 warnings generated.


vim +/init_per_task_early +887 init/main.c

   886	
 > 887	void __init init_per_task_early(void)
   888	{
   889	#ifdef CONFIG_POSIX_TIMERS
   890		per_task(&init_task, posix_cputimers) = (struct posix_cputimers) __INIT_CPU_TIMERS(init_task);
   891	#endif
   892	

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