preempt_disable(); 
void default_idle(void){	long oldval;	unsigned int cpu = smp_processor_id();	while (1) {		oldval = test_and_clear_thread_flag(TIF_NEED_RESCHED);		if (!oldval) {			set_thread_flag(TIF_POLLING_NRFLAG);			while (!need_resched() && !cpu_is_offline(cpu)) {				ppc64_runlatch_off();				/*				 * Go into low thread priority and possibly				 * low power mode.				 */				HMT_low();				HMT_very_low();			}			HMT_medium();			clear_thread_flag(TIF_POLLING_NRFLAG);		} else {			set_need_resched();		}		ppc64_runlatch_on();		schedule();		if (cpu_is_offline(cpu) && system_state == SYSTEM_RUNNING)			cpu_die();	}}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/5bfb5d690f36d316a5f3b4f7775fda996faa6b12/idle.c/clean/arch/ppc64/kernel/idle.c