linux-kernel - [mingo-tip:sched/headers 104/2372] init/main.c:884:13: warning: no previous prototype for function 'init_per_task

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Date:   Sat, 8 Jan 2022 13:56:52 +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 104/2372] init/main.c:884:13: 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:   67f8f45b4d0cf00f8e53fc1c2b50c67608ede063
commit: eefe4b7749e3afbf9a5cb237cfb3727701126996 [104/2372] headers/deps: cpusets: Move task_struct::mems_allowed_seq to per_task()
config: i386-randconfig-r014-20220107 (https://download.01.org/0day-ci/archive/20220108/202201081348.mrJjpM8b-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project f3a344d2125fa37e59bae1b0874442c650a19607)
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=eefe4b7749e3afbf9a5cb237cfb3727701126996
        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 eefe4b7749e3afbf9a5cb237cfb3727701126996
        # 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 >>):

   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:884:13: warning: no previous prototype for function 'init_per_task_early' [-Wmissing-prototypes]
   void __init init_per_task_early(void)
               ^
   init/main.c:884:1: 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 +884 init/main.c

   883	
 > 884	void __init init_per_task_early(void)
   885	{
   886	#ifdef CONFIG_POSIX_TIMERS
   887		per_task(&init_task, posix_cputimers) = (struct posix_cputimers) __INIT_CPU_TIMERS(init_task);
   888	#endif
   889	

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