build_err.log

kernel/sched/psi.c: In function ‘cgroup_move_task’:
kernel/sched/psi.c:661:7: error: implicit declaration of function ‘task_rq_lock’; did you mean ‘task_unlock’? [-Werror=implicit-function-declarati
on]                                                
  rq = task_rq_lock(task, &rf);          
       ^~~~~~~~~~~~          
       task_unlock                                 
kernel/sched/psi.c:661:5: warning: assignment to ‘struct rq *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
  rq = task_rq_lock(task, &rf);                   
     ^                                          
kernel/sched/psi.c:663:6: error: implicit declaration of function ‘task_on_rq_queued’ [-Werror=implicit-function-declaration]
  if (task_on_rq_queued(task))              
      ^~~~~~~~~~~~~~~~~                                  
kernel/sched/psi.c:680:2: error: implicit declaration of function ‘task_rq_unlock’; did you mean ‘task_unlock’? [-Werror=implicit-function-declara
tion]                                             
  task_rq_unlock(rq, task, &rf);
  ^~~~~~~~~~~~~~
  task_unlock
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:292: kernel/sched/psi.o] Error 1
make[1]: *** [scripts/Makefile.build:516: kernel/sched] Error 2