linux-kernel - kernel/sched/fair.c:10823:6: warning: no previous prototype for function 'task_vruntime

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Date:   Sat, 6 Nov 2021 21:46:01 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Joel Fernandes (Google)" <joel@...lfernandes.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: kernel/sched/fair.c:10823:6: warning: no previous prototype for
 function 'task_vruntime_update'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   fe91c4725aeed35023ba4f7a1e1adfebb6878c23
commit: c6047c2e3af68dae23ad884249e0d42ff28d2d1b sched/fair: Snapshot the min_vruntime of CPUs on force idle
date:   6 months ago
config: x86_64-randconfig-a001-20210928 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
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/torvalds/linux.git/commit/?id=c6047c2e3af68dae23ad884249e0d42ff28d2d1b
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout c6047c2e3af68dae23ad884249e0d42ff28d2d1b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 

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/fair.c:10823:6: warning: no previous prototype for function 'task_vruntime_update' [-Wmissing-prototypes]
   void task_vruntime_update(struct rq *rq, struct task_struct *p, bool in_fi)
        ^
   kernel/sched/fair.c:10823:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void task_vruntime_update(struct rq *rq, struct task_struct *p, bool in_fi)
   ^
   static 
   1 warning generated.


vim +/task_vruntime_update +10823 kernel/sched/fair.c

 10822	
 10823	void task_vruntime_update(struct rq *rq, struct task_struct *p, bool in_fi)
 10824	{
 10825		struct sched_entity *se = &p->se;
 10826	
 10827		if (p->sched_class != &fair_sched_class)
 10828			return;
 10829	
 10830		se_fi_update(se, rq->core->core_forceidle_seq, in_fi);
 10831	}
 10832	

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

Download attachment ".config.gz" of type "application/gzip" (35752 bytes)