linux-kernel - [mingo-tip:sched/core 16/16] kernel/sched/core.c:5220:20: warning: no previous prototype for 'task_sched

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Date:   Tue, 15 Mar 2022 21:13:38 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [mingo-tip:sched/core 16/16] kernel/sched/core.c:5220:20: warning:
 no previous prototype for 'task_sched_runtime'

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/core
head:   4ff8f2ca6ccd9e0cc5665d09f86d631b3ae3a14c
commit: 4ff8f2ca6ccd9e0cc5665d09f86d631b3ae3a14c [16/16] sched/headers: Reorganize, clean up and optimize kernel/sched/sched.h dependencies
config: nds32-allnoconfig (https://download.01.org/0day-ci/archive/20220315/202203152116.qphmikIZ-lkp@intel.com/config)
compiler: nds32le-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://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=4ff8f2ca6ccd9e0cc5665d09f86d631b3ae3a14c
        git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
        git fetch --no-tags mingo-tip sched/core
        git checkout 4ff8f2ca6ccd9e0cc5665d09f86d631b3ae3a14c
        # 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=nds32 SHELL=/bin/bash kernel/sched/

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/sched/core.c:5220:20: warning: no previous prototype for 'task_sched_runtime' [-Wmissing-prototypes]
    5220 | unsigned long long task_sched_runtime(struct task_struct *p)
         |                    ^~~~~~~~~~~~~~~~~~
>> kernel/sched/core.c:9403:13: warning: no previous prototype for 'sched_init_smp' [-Wmissing-prototypes]
    9403 | void __init sched_init_smp(void)
         |             ^~~~~~~~~~~~~~
>> kernel/sched/core.c:9431:13: warning: no previous prototype for 'sched_init' [-Wmissing-prototypes]
    9431 | void __init sched_init(void)
         |             ^~~~~~~~~~


vim +/task_sched_runtime +5220 kernel/sched/core.c

6075620b0590eaf kernel/sched/core.c Giovanni Gherdovich 2016-08-05  5214  
c5f8d99585d7b5b kernel/sched.c      Hidetoshi Seto      2009-03-31  5215  /*
c5f8d99585d7b5b kernel/sched.c      Hidetoshi Seto      2009-03-31  5216   * Return accounted runtime for the task.
c5f8d99585d7b5b kernel/sched.c      Hidetoshi Seto      2009-03-31  5217   * In case the task is currently running, return the runtime plus current's
c5f8d99585d7b5b kernel/sched.c      Hidetoshi Seto      2009-03-31  5218   * pending runtime that have not been accounted yet.
c5f8d99585d7b5b kernel/sched.c      Hidetoshi Seto      2009-03-31  5219   */
c5f8d99585d7b5b kernel/sched.c      Hidetoshi Seto      2009-03-31 @5220  unsigned long long task_sched_runtime(struct task_struct *p)
c5f8d99585d7b5b kernel/sched.c      Hidetoshi Seto      2009-03-31  5221  {
eb58075149b7f03 kernel/sched/core.c Peter Zijlstra      2015-07-31  5222  	struct rq_flags rf;
c5f8d99585d7b5b kernel/sched.c      Hidetoshi Seto      2009-03-31  5223  	struct rq *rq;
6e998916dfe327e kernel/sched/core.c Stanislaw Gruszka   2014-11-12  5224  	u64 ns;
c5f8d99585d7b5b kernel/sched.c      Hidetoshi Seto      2009-03-31  5225  

:::::: The code at line 5220 was first introduced by commit
:::::: c5f8d99585d7b5b7e857fabf8aefd0174903a98c posixtimers, sched: Fix posix clock monotonicity

:::::: TO: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
:::::: CC: Ingo Molnar <mingo@...e.hu>

---
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