TASKLET_STATE_RUN
while (test_bit(TASKLET_STATE_RUN, &ts->state))
while (test_bit(TASKLET_STATE_RUN, &ts->state))
return test_bit(TASKLET_STATE_RUN, &t->state);
clear_bit(TASKLET_STATE_RUN, &ts->state);
return !test_and_set_bit(TASKLET_STATE_RUN, &ts->state);