diff options
Diffstat (limited to 'tools/power/cpupower/utils/helpers/msr.c')
| -rw-r--r-- | tools/power/cpupower/utils/helpers/msr.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/helpers/msr.c b/tools/power/cpupower/utils/helpers/msr.c index 93d48bd56e5..7869ca64dfd 100644 --- a/tools/power/cpupower/utils/helpers/msr.c +++ b/tools/power/cpupower/utils/helpers/msr.c @@ -11,6 +11,7 @@ #define MSR_IA32_PERF_STATUS 0x198 #define MSR_IA32_MISC_ENABLES 0x1a0 #define MSR_IA32_ENERGY_PERF_BIAS 0x1b0 +#define MSR_NEHALEM_TURBO_RATIO_LIMIT 0x1ad /* * read_msr @@ -79,6 +80,7 @@ int msr_intel_has_boost_support(unsigned int cpu) ret = read_msr(cpu, MSR_IA32_MISC_ENABLES, &misc_enables); if (ret) return ret; + return (misc_enables >> 38) & 0x1; } @@ -119,4 +121,18 @@ int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val) return ret; return 0; } + +unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu) +{ + unsigned long long val; + int ret; + + if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_HAS_TURBO_RATIO)) + return -1; + + ret = read_msr(cpu, MSR_NEHALEM_TURBO_RATIO_LIMIT, &val); + if (ret) + return ret; + return val; +} #endif |