hrtimers_prepare_cpu  532 include/linux/hrtimer.h int hrtimers_prepare_cpu(unsigned int cpu);
hrtimers_prepare_cpu 1400 kernel/cpu.c   		.startup.single		= hrtimers_prepare_cpu,
hrtimers_prepare_cpu 2091 kernel/time/hrtimer.c 	hrtimers_prepare_cpu(smp_processor_id());