Re: [PATCH 2/4] sched/core: introduce core to struct cfs_rq

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

Hi Cruz,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.7-rc1 next-20231115]
[cannot apply to tip/sched/core]
[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/Cruz-Zhao/sched-core-introduce-core_id-to-struct-rq/20231115-193559
base:   linus/master
patch link:    https://lore.kernel.org/r/20231115113341.13261-3-CruzZhao%40linux.alibaba.com
patch subject: [PATCH 2/4] sched/core: introduce core to struct cfs_rq
config: x86_64-buildonly-randconfig-004-20231116 (https://download.01.org/0day-ci/archive/20231116/202311160408.5eq3Ye68-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231116/202311160408.5eq3Ye68-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311160408.5eq3Ye68-lkp@intel.com/

All errors (new ones prefixed by >>):

   kernel/sched/fair.c: In function 'alloc_fair_sched_group':
>> kernel/sched/fair.c:12728:17: error: implicit declaration of function 'sched_core_init_cfs_rq'; did you mean 'sched_core_idle_cpu'? [-Werror=implicit-function-declaration]
   12728 |                 sched_core_init_cfs_rq(tg, cfs_rq);
         |                 ^~~~~~~~~~~~~~~~~~~~~~
         |                 sched_core_idle_cpu
   cc1: some warnings being treated as errors


vim +12728 kernel/sched/fair.c

 12697	
 12698	int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent)
 12699	{
 12700		struct sched_entity *se;
 12701		struct cfs_rq *cfs_rq;
 12702		int i;
 12703	
 12704		tg->cfs_rq = kcalloc(nr_cpu_ids, sizeof(cfs_rq), GFP_KERNEL);
 12705		if (!tg->cfs_rq)
 12706			goto err;
 12707		tg->se = kcalloc(nr_cpu_ids, sizeof(se), GFP_KERNEL);
 12708		if (!tg->se)
 12709			goto err;
 12710	
 12711		tg->shares = NICE_0_LOAD;
 12712	
 12713		init_cfs_bandwidth(tg_cfs_bandwidth(tg), tg_cfs_bandwidth(parent));
 12714	
 12715		for_each_possible_cpu(i) {
 12716			cfs_rq = kzalloc_node(sizeof(struct cfs_rq),
 12717					      GFP_KERNEL, cpu_to_node(i));
 12718			if (!cfs_rq)
 12719				goto err;
 12720	
 12721			se = kzalloc_node(sizeof(struct sched_entity_stats),
 12722					  GFP_KERNEL, cpu_to_node(i));
 12723			if (!se)
 12724				goto err_free_rq;
 12725	
 12726			init_cfs_rq(cfs_rq);
 12727			init_tg_cfs_entry(tg, cfs_rq, se, i, parent->se[i]);
 12728			sched_core_init_cfs_rq(tg, cfs_rq);
 12729			init_entity_runnable_average(se);
 12730		}
 12731	
 12732		return 1;
 12733	
 12734	err_free_rq:
 12735		kfree(cfs_rq);
 12736	err:
 12737		return 0;
 12738	}
 12739	

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