native_sched_clock 11 arch/x86/include/asm/timer.h unsigned long long native_sched_clock(void); native_sched_clock 301 arch/x86/kernel/paravirt.c .time.sched_clock = native_sched_clock, native_sched_clock 250 arch/x86/kernel/tsc.c return pv_ops.time.sched_clock == native_sched_clock;