tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: ea8b5fbcdf7f5ce2d966ae6aa4e95e2ebde6cb03 commit: b7772972a0a76efac27078392f3f706914fe2af7 [3388/3388] sched/core: Add cpu.steal_task in cgroup v1 cpu subsystem config: x86_64-randconfig-r054-20251209 (https://download.01.org/0day-ci/archive/20251210/202512101034.mDWav7mE-lkp@i...) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 6ec8c4351cfc1d0627d1633b02ea787bd29c77d8) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251210/202512101034.mDWav7mE-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/202512101034.mDWav7mE-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from <built-in>:2: In file included from include/linux/compiler_types.h:69: include/linux/compiler-clang.h:34:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined] 34 | #define __SANITIZE_ADDRESS__ | ^ <built-in>:352:9: note: previous definition is here 352 | #define __SANITIZE_ADDRESS__ 1 | ^ kernel/sched/core.c:2750:6: warning: no previous prototype for function 'sched_set_stop_task' [-Wmissing-prototypes] 2750 | void sched_set_stop_task(int cpu, struct task_struct *stop) | ^ kernel/sched/core.c:2750:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 2750 | void sched_set_stop_task(int cpu, struct task_struct *stop) | ^ | static kernel/sched/core.c:8279:3: error: use of undeclared identifier 'root_task_group'; did you mean 'root_mem_cgroup'? 8279 | root_task_group.steal_task = TG_STEAL_NO; | ^~~~~~~~~~~~~~~ | root_mem_cgroup include/linux/memcontrol.h:461:27: note: 'root_mem_cgroup' declared here 461 | extern struct mem_cgroup *root_mem_cgroup; | ^

...

kernel/sched/core.c:8279:18: error: member reference type 'struct mem_cgroup *' is a pointer; did you mean to use '->'? 8279 | root_task_group.steal_task = TG_STEAL_NO; | ~~~~~~~~~~~~~~~^ | -> kernel/sched/core.c:8279:19: error: no member named 'steal_task' in 'struct mem_cgroup' 8279 | root_task_group.steal_task = TG_STEAL_NO; | ~~~~~~~~~~~~~~~ ^ kernel/sched/core.c:8279:32: error: use of undeclared identifier 'TG_STEAL_NO' 8279 | root_task_group.steal_task = TG_STEAL_NO; | ^~~~~~~~~~~ 2 warnings and 4 errors generated.

vim +8279 kernel/sched/core.c 8253 8254 wait_bit_init(); 8255 8256 #ifdef CONFIG_FAIR_GROUP_SCHED 8257 ptr += 2 * nr_cpu_ids * sizeof(void **); 8258 #endif 8259 #ifdef CONFIG_RT_GROUP_SCHED 8260 ptr += 2 * nr_cpu_ids * sizeof(void **); 8261 #endif 8262 if (ptr) { 8263 ptr = (unsigned long)kzalloc(ptr, GFP_NOWAIT); 8264 8265 #ifdef CONFIG_FAIR_GROUP_SCHED 8266 root_task_group.se = (struct sched_entity **)ptr; 8267 ptr += nr_cpu_ids * sizeof(void **); 8268 8269 root_task_group.cfs_rq = (struct cfs_rq **)ptr; 8270 ptr += nr_cpu_ids * sizeof(void **); 8271 8272 root_task_group.shares = ROOT_TASK_GROUP_LOAD; 8273 init_cfs_bandwidth(&root_task_group.cfs_bandwidth); 8274 #endif /* CONFIG_FAIR_GROUP_SCHED */ 8275 #ifdef CONFIG_QOS_SCHED_SMT_EXPELLER 8276 root_task_group.smt_expell = TG_SMT_EXPELL; 8277 #endif 8278 #ifdef CONFIG_SCHED_STEAL

8279 root_task_group.steal_task = TG_STEAL_NO; 8280 #endif 8281 #ifdef CONFIG_RT_GROUP_SCHED 8282 root_task_group.rt_se = (struct sched_rt_entity **)ptr; 8283 ptr += nr_cpu_ids * sizeof(void **); 8284 8285 root_task_group.rt_rq = (struct rt_rq **)ptr; 8286 ptr += nr_cpu_ids * sizeof(void **); 8287

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