lbr_from_nr      4061 arch/x86/events/intel/core.c 	unsigned long lbr_from_nr = x86_pmu.lbr_from + x86_pmu.lbr_nr;
lbr_from_nr      4063 arch/x86/events/intel/core.c 	return x86_pmu.lbr_from <= msr && msr < lbr_from_nr;