Hi Jing, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 56b56ac9eef7eb836517da7cac03b570a664b49b commit: be8d95530886b0aaa5a59b5c43a285667c9eebc6 [2870/2870] memcg: support priority for oom config: x86_64-buildonly-randconfig-001-20250909 (https://download.01.org/0day-ci/archive/20250909/202509091707.YxEsJCE3-lkp@i...) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250909/202509091707.YxEsJCE3-lkp@i...) 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/202509091707.YxEsJCE3-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

mm/oom_kill.c:316: warning: Function parameter or member 'task' not described in 'oom_next_task' mm/oom_kill.c:316: warning: Function parameter or member 'oc' not described in 'oom_next_task' mm/oom_kill.c:316: warning: Function parameter or member 'points' not described in 'oom_next_task' mm/oom_kill.c:316: warning: expecting prototype for We choose the task in low(). Prototype was for oom_next_task() instead

vim +316 mm/oom_kill.c 308 309 #ifdef CONFIG_MEMCG_OOM_PRIORITY 310 /** 311 * We choose the task in low-priority memcg firstly. For the same state, we 312 * choose the task with the highest number of 'points'. 313 */ 314 static bool oom_next_task(struct task_struct *task, struct oom_control *oc, 315 long points)

316 { 317 struct mem_cgroup *cur_memcg; 318 struct mem_cgroup *oc_memcg; 319 int cur_memcg_prio, oc_memcg_prio; 320 321 if (points == LONG_MIN) 322 return true; 323 324 if (!oc->chosen) 325 return false; 326 327 rcu_read_lock(); 328 oc_memcg = mem_cgroup_from_task(oc->chosen); 329 cur_memcg = mem_cgroup_from_task(task); 330 oc_memcg_prio = READ_ONCE(oc_memcg->oom_prio); 331 cur_memcg_prio = READ_ONCE(cur_memcg->oom_prio); 332 rcu_read_unlock(); 333 334 if (cur_memcg_prio == oc_memcg_prio) 335 return points < oc->chosen_points; 336 337 /* if oc is low-priority, so skip the task */ 338 if (oc_memcg_prio == MEMCG_LOW_OOM_PRIORITY) 339 return true; 340 341 return false; 342 } 343 #else 344 static inline bool oom_next_task(struct task_struct *task, 345 struct oom_control *oc, long points) 346 { 347 return points == LONG_MIN || points < oc->chosen_points; 348 } 349 #endif 350

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