CPUID_TSC_LEAF 196 arch/x86/events/intel/pt.c if (boot_cpu_data.cpuid_level >= CPUID_TSC_LEAF) { CPUID_TSC_LEAF 199 arch/x86/events/intel/pt.c cpuid(CPUID_TSC_LEAF, &eax, &ebx, &ecx, &edx);