CIF_ENABLED_WAIT
#define _CIF_ENABLED_WAIT BIT(CIF_ENABLED_WAIT)
set_cpu_flag(CIF_ENABLED_WAIT);
from_idle = test_and_clear_cpu_flag(CIF_ENABLED_WAIT);
from_idle = test_and_clear_cpu_flag(CIF_ENABLED_WAIT);
if (test_cpu_flag_of(CIF_ENABLED_WAIT, cpu))