ref_start        1292 arch/x86/kernel/tsc.c 	static u64 tsc_start = ULLONG_MAX, ref_start;
ref_start        1314 arch/x86/kernel/tsc.c 		tsc_start = tsc_read_refs(&ref_start, hpet);
ref_start        1322 arch/x86/kernel/tsc.c 	if (ref_start == ref_stop)
ref_start        1332 arch/x86/kernel/tsc.c 		freq = calc_hpet_ref(delta, ref_start, ref_stop);
ref_start        1334 arch/x86/kernel/tsc.c 		freq = calc_pmtimer_ref(delta, ref_start, ref_stop);