MSR_AMD_PERF_CTL 263 drivers/cpufreq/acpi-cpufreq.c rdmsr(MSR_AMD_PERF_CTL, val, dummy); MSR_AMD_PERF_CTL 269 drivers/cpufreq/acpi-cpufreq.c wrmsr(MSR_AMD_PERF_CTL, val, 0);