linux-kernel - Re: [PATCH] sched/fair: factor out common sched

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Message-ID: <202512211954.HdIWtguJ-lkp@intel.com>
Date: Sun, 21 Dec 2025 19:52:04 +0100
From: kernel test robot <lkp@...el.com>
To: Zhan Xusheng <zhanxusheng1024@...il.com>, peterz@...radead.org
Cc: oe-kbuild-all@...ts.linux.dev, vincent.guittot@...aro.org,
	dietmar.eggemann@....com, linux-sched@...r.kernel.org,
	linux-kernel@...r.kernel.org, Zhan Xusheng <zhanxusheng@...omi.com>
Subject: Re: [PATCH] sched/fair: factor out common sched_entity stats/task
 lookup

Hi Zhan,

kernel test robot noticed the following build errors:

[auto build test ERROR on tip/sched/core]
[also build test ERROR on peterz-queue/sched/core linus/master v6.16-rc1 next-20251219]
[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/Zhan-Xusheng/sched-fair-factor-out-common-sched_entity-stats-task-lookup/20251217-150252
base:   tip/sched/core
patch link:    https://lore.kernel.org/r/20251217070040.8723-1-zhanxusheng%40xiaomi.com
patch subject: [PATCH] sched/fair: factor out common sched_entity stats/task lookup
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20251221/202512211954.HdIWtguJ-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251221/202512211954.HdIWtguJ-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512211954.HdIWtguJ-lkp@intel.com/

All errors (new ones prefixed by >>):

   kernel/sched/fair.c: In function 'update_stats_enqueue_sleeper_fair':
>> kernel/sched/fair.c:1337:44: error: 'p' undeclared (first use in this function); did you mean 'up'?
    1337 |         get_se_stats_and_task(se, &stats, &p);
         |                                            ^
         |                                            up
   kernel/sched/fair.c:1337:44: note: each undeclared identifier is reported only once for each function it appears in


vim +1337 kernel/sched/fair.c

  1327	
  1328	static inline void
  1329	update_stats_enqueue_sleeper_fair(struct cfs_rq *cfs_rq, struct sched_entity *se)
  1330	{
  1331		struct sched_statistics *stats;
  1332		struct task_struct *tsk = NULL;
  1333	
  1334		if (!schedstat_enabled())
  1335			return;
  1336	
> 1337		get_se_stats_and_task(se, &stats, &p);
  1338	
  1339		__update_stats_enqueue_sleeper(rq_of(cfs_rq), tsk, stats);
  1340	}
  1341	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki