check_msr
er->extra_msr_access = check_msr(er->msr, 0x11UL);
if (x86_pmu.lbr_tos && !check_msr(x86_pmu.lbr_tos, 0x3UL))
if (!(check_msr(x86_pmu.lbr_from + i, 0xffffUL) &&
check_msr(x86_pmu.lbr_to + i, 0xffffUL)))
check_msr(MSR_CORE_PERF_GLOBAL_CTRL, 1);
check_msr(MSR_P6_EVNTSEL0, 0xffff);
check_msr(MSR_IA32_PMC0, 0xffff);
check_msr(MSR_K7_EVNTSEL0, 0xffff);
check_msr(MSR_K7_PERFCTR0, 0xffff);