TICK_SCHED_REMOTE_RUNNING
os = atomic_fetch_add_unless(&twork->state, -1, TICK_SCHED_REMOTE_RUNNING);
if (os == TICK_SCHED_REMOTE_RUNNING)
os = atomic_xchg(&twork->state, TICK_SCHED_REMOTE_RUNNING);
WARN_ON_ONCE(os == TICK_SCHED_REMOTE_RUNNING);
WARN_ON_ONCE(os != TICK_SCHED_REMOTE_RUNNING);