cpu_data[0].udelay_val = loops_per_jiffy;
void __init smp_prepare_cpus(unsigned int max_cpus){	cpu_data[0].udelay_val = loops_per_jiffy;	init_new_context(current, &init_mm);	current_thread_info()->cpu = 0;	smp_tune_scheduling();	prom_prepare_cpus(max_cpus);}