Warnings before patch:
files: ['include/linux/kthread.h', 'kernel/cgroup/cpuset.c', 'kernel/kthread.c', 'kernel/sched/isolation.c']
Warning: include/linux/kthread.h:74 No description found for return value of 'kthread_run_on_cpu'
Warning: include/linux/kthread.h:232 No description found for return value of 'kthread_run_worker_on_cpu'
Warning: kernel/cgroup/cpuset.c:1514 No description found for return value of 'rm_siblings_excl_cpus'
Warning: kernel/cgroup/cpuset.c:2557 No description found for return value of 'update_cpumask'
Warning: kernel/cgroup/cpuset.c:2617 No description found for return value of 'update_exclusive_cpumask'
Warning: kernel/cgroup/cpuset.c:3873 No description found for return value of 'cpuset_init'
Warning: kernel/cgroup/cpuset.c:4257 No description found for return value of 'cpuset_cpus_allowed_fallback'
Warning: kernel/cgroup/cpuset.c:4306 No description found for return value of 'cpuset_mems_allowed'
Warning: kernel/cgroup/cpuset.c:4324 No description found for return value of 'cpuset_nodemask_valid_mems_allowed'
Warning: kernel/cgroup/cpuset.c:4476 No description found for return value of 'cpuset_spread_node'
Warning: kernel/cgroup/cpuset.c:4484 No description found for return value of 'cpuset_mem_spread_node'
Warning: kernel/cgroup/cpuset.c:4505 No description found for return value of 'cpuset_mems_allowed_intersects'
Warning: kernel/kthread.c:166 No description found for return value of 'kthread_should_stop'
Warning: kernel/kthread.c:188 No description found for return value of 'kthread_should_park'
Warning: kernel/kthread.c:213 No description found for return value of 'kthread_freezable_should_stop'
Warning: kernel/kthread.c:235 No description found for return value of 'kthread_func'
Warning: kernel/kthread.c:252 No description found for return value of 'kthread_data'
Warning: kernel/kthread.c:267 No description found for return value of 'kthread_probe_data'
Warning: kernel/kthread.c:581 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:649 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:731 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:775 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:805 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:980 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1082 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1195 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1722 No description found for return value of 'kthread_blkcg'
Warning: include/linux/kthread.h:74 No description found for return value of 'kthread_run_on_cpu'
Warning: include/linux/kthread.h:232 No description found for return value of 'kthread_run_worker_on_cpu'
Warning: kernel/cgroup/cpuset.c:1514 No description found for return value of 'rm_siblings_excl_cpus'
Warning: kernel/cgroup/cpuset.c:2557 No description found for return value of 'update_cpumask'
Warning: kernel/cgroup/cpuset.c:2617 No description found for return value of 'update_exclusive_cpumask'
Warning: kernel/cgroup/cpuset.c:3873 No description found for return value of 'cpuset_init'
Warning: kernel/cgroup/cpuset.c:4257 No description found for return value of 'cpuset_cpus_allowed_fallback'
Warning: kernel/cgroup/cpuset.c:4306 No description found for return value of 'cpuset_mems_allowed'
Warning: kernel/cgroup/cpuset.c:4324 No description found for return value of 'cpuset_nodemask_valid_mems_allowed'
Warning: kernel/cgroup/cpuset.c:4476 No description found for return value of 'cpuset_spread_node'
Warning: kernel/cgroup/cpuset.c:4484 No description found for return value of 'cpuset_mem_spread_node'
Warning: kernel/cgroup/cpuset.c:4505 No description found for return value of 'cpuset_mems_allowed_intersects'
Warning: kernel/kthread.c:166 No description found for return value of 'kthread_should_stop'
Warning: kernel/kthread.c:188 No description found for return value of 'kthread_should_park'
Warning: kernel/kthread.c:213 No description found for return value of 'kthread_freezable_should_stop'
Warning: kernel/kthread.c:235 No description found for return value of 'kthread_func'
Warning: kernel/kthread.c:252 No description found for return value of 'kthread_data'
Warning: kernel/kthread.c:267 No description found for return value of 'kthread_probe_data'
Warning: kernel/kthread.c:581 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:649 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:731 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:775 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:805 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:980 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1082 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1195 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1722 No description found for return value of 'kthread_blkcg'

Current warnings:
files: ['include/linux/kthread.h', 'kernel/cgroup/cpuset.c', 'kernel/kthread.c', 'kernel/sched/isolation.c']
Warning: include/linux/kthread.h:74 No description found for return value of 'kthread_run_on_cpu'
Warning: include/linux/kthread.h:233 No description found for return value of 'kthread_run_worker_on_cpu'
Warning: kernel/cgroup/cpuset.c:1513 No description found for return value of 'rm_siblings_excl_cpus'
Warning: kernel/cgroup/cpuset.c:2556 No description found for return value of 'update_cpumask'
Warning: kernel/cgroup/cpuset.c:2616 No description found for return value of 'update_exclusive_cpumask'
Warning: kernel/cgroup/cpuset.c:3872 No description found for return value of 'cpuset_init'
Warning: kernel/cgroup/cpuset.c:4256 No description found for return value of 'cpuset_cpus_allowed_fallback'
Warning: kernel/cgroup/cpuset.c:4305 No description found for return value of 'cpuset_mems_allowed'
Warning: kernel/cgroup/cpuset.c:4323 No description found for return value of 'cpuset_nodemask_valid_mems_allowed'
Warning: kernel/cgroup/cpuset.c:4475 No description found for return value of 'cpuset_spread_node'
Warning: kernel/cgroup/cpuset.c:4483 No description found for return value of 'cpuset_mem_spread_node'
Warning: kernel/cgroup/cpuset.c:4504 No description found for return value of 'cpuset_mems_allowed_intersects'
Warning: kernel/kthread.c:166 No description found for return value of 'kthread_should_stop'
Warning: kernel/kthread.c:188 No description found for return value of 'kthread_should_park'
Warning: kernel/kthread.c:213 No description found for return value of 'kthread_freezable_should_stop'
Warning: kernel/kthread.c:235 No description found for return value of 'kthread_func'
Warning: kernel/kthread.c:252 No description found for return value of 'kthread_data'
Warning: kernel/kthread.c:267 No description found for return value of 'kthread_probe_data'
Warning: kernel/kthread.c:581 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:649 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:731 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:775 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:805 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:950 No description found for return value of 'kthreads_update_housekeeping'
Warning: kernel/kthread.c:1001 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1103 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1216 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1743 No description found for return value of 'kthread_blkcg'
Warning: include/linux/kthread.h:74 No description found for return value of 'kthread_run_on_cpu'
Warning: include/linux/kthread.h:233 No description found for return value of 'kthread_run_worker_on_cpu'
Warning: kernel/cgroup/cpuset.c:1513 No description found for return value of 'rm_siblings_excl_cpus'
Warning: kernel/cgroup/cpuset.c:2556 No description found for return value of 'update_cpumask'
Warning: kernel/cgroup/cpuset.c:2616 No description found for return value of 'update_exclusive_cpumask'
Warning: kernel/cgroup/cpuset.c:3872 No description found for return value of 'cpuset_init'
Warning: kernel/cgroup/cpuset.c:4256 No description found for return value of 'cpuset_cpus_allowed_fallback'
Warning: kernel/cgroup/cpuset.c:4305 No description found for return value of 'cpuset_mems_allowed'
Warning: kernel/cgroup/cpuset.c:4323 No description found for return value of 'cpuset_nodemask_valid_mems_allowed'
Warning: kernel/cgroup/cpuset.c:4475 No description found for return value of 'cpuset_spread_node'
Warning: kernel/cgroup/cpuset.c:4483 No description found for return value of 'cpuset_mem_spread_node'
Warning: kernel/cgroup/cpuset.c:4504 No description found for return value of 'cpuset_mems_allowed_intersects'
Warning: kernel/kthread.c:166 No description found for return value of 'kthread_should_stop'
Warning: kernel/kthread.c:188 No description found for return value of 'kthread_should_park'
Warning: kernel/kthread.c:213 No description found for return value of 'kthread_freezable_should_stop'
Warning: kernel/kthread.c:235 No description found for return value of 'kthread_func'
Warning: kernel/kthread.c:252 No description found for return value of 'kthread_data'
Warning: kernel/kthread.c:267 No description found for return value of 'kthread_probe_data'
Warning: kernel/kthread.c:581 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:649 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:731 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:775 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:805 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:950 No description found for return value of 'kthreads_update_housekeeping'
Warning: kernel/kthread.c:1001 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1103 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1216 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1743 No description found for return value of 'kthread_blkcg'

Warnings before: 54 after: 56 (add: 2)

New warnings added:
Warning: kernel/kthread.c:950 No description found for return value of 'kthreads_update_housekeeping'
Warning: kernel/kthread.c:950 No description found for return value of 'kthreads_update_housekeeping'
Per-file breakdown:
     2 kernel/kthread.c