sync_upd_work
struct work_struct sync_upd_work;
sync_upd_work);
cancel_work_sync(&sched->sync_upd_work);
container_of(work, struct panthor_group, sync_upd_work);
INIT_WORK(&group->sync_upd_work, group_sync_upd_work);
disable_work_sync(&sched->sync_upd_work);
INIT_WORK(&sched->sync_upd_work, sync_upd_work);
struct work_struct sync_upd_work;