Re: [PATCH v3 8/8] sched/fair: Add latency list

[kernel test robot <lkp@intel.com>]

Hi Vincent,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tip/sched/core]
[also build test WARNING on linus/master v6.0-rc4 next-20220909]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Vincent-Guittot/Add-latency-priority-for-CFS-class/20220909-210655
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git fb04563d1cae6f361892b4a339ad92100b1eb0d0
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20220909/202209092349.DjjxV7GB-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
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://github.com/intel-lab-lkp/linux/commit/4bdc6637b9aab44577b65686a745a14b325f4c23
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Vincent-Guittot/Add-latency-priority-for-CFS-class/20220909-210655
        git checkout 4bdc6637b9aab44577b65686a745a14b325f4c23
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash kernel/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> kernel/sched/fair.c:727:22: warning: no previous prototype for '__pick_first_latency' [-Wmissing-prototypes]
     727 | struct sched_entity *__pick_first_latency(struct cfs_rq *cfs_rq)
         |                      ^~~~~~~~~~~~~~~~~~~~
   kernel/sched/fair.c:742:5: warning: no previous prototype for 'sched_update_scaling' [-Wmissing-prototypes]
     742 | int sched_update_scaling(void)
         |     ^~~~~~~~~~~~~~~~~~~~


vim +/__pick_first_latency +727 kernel/sched/fair.c

   726	
 > 727	struct sched_entity *__pick_first_latency(struct cfs_rq *cfs_rq)
   728	{
   729		struct rb_node *left = rb_first_cached(&cfs_rq->latency_timeline);
   730	
   731		if (!left)
   732			return NULL;
   733	
   734		return __latency_node_2_se(left);
   735	}
   736	

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https://01.org/lkp