diff options
Diffstat (limited to 'drivers/cpufreq/intel_pstate.c')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 52 |
1 files changed, 46 insertions, 6 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index b6a1aadaff9f..9578312e43f2 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -373,11 +373,24 @@ static void intel_pstate_set_itmt_prio(int cpu) } } } -#else + +static int intel_pstate_get_cppc_guranteed(int cpu) +{ + struct cppc_perf_caps cppc_perf; + int ret; + + ret = cppc_get_perf_caps(cpu, &cppc_perf); + if (ret) + return ret; + + return cppc_perf.guaranteed_perf; +} + +#else /* CONFIG_ACPI_CPPC_LIB */ static void intel_pstate_set_itmt_prio(int cpu) { } -#endif +#endif /* CONFIG_ACPI_CPPC_LIB */ static void intel_pstate_init_acpi_perf_limits(struct cpufreq_policy *policy) { @@ -459,7 +472,7 @@ static void intel_pstate_exit_perf_limits(struct cpufreq_policy *policy) acpi_processor_unregister_performance(policy->cpu); } -#else +#else /* CONFIG_ACPI */ static inline void intel_pstate_init_acpi_perf_limits(struct cpufreq_policy *policy) { } @@ -472,7 +485,14 @@ static inline bool intel_pstate_acpi_pm_profile_server(void) { return false; } -#endif +#endif /* CONFIG_ACPI */ + +#ifndef CONFIG_ACPI_CPPC_LIB +static int intel_pstate_get_cppc_guranteed(int cpu) +{ + return -ENOTSUPP; +} +#endif /* CONFIG_ACPI_CPPC_LIB */ static inline void update_turbo_state(void) { @@ -699,9 +719,29 @@ static ssize_t show_energy_performance_preference( cpufreq_freq_attr_rw(energy_performance_preference); +static ssize_t show_base_frequency(struct cpufreq_policy *policy, char *buf) +{ + struct cpudata *cpu; + u64 cap; + int ratio; + + ratio = intel_pstate_get_cppc_guranteed(policy->cpu); + if (ratio <= 0) { + rdmsrl_on_cpu(policy->cpu, MSR_HWP_CAPABILITIES, &cap); + ratio = HWP_GUARANTEED_PERF(cap); + } + + cpu = all_cpu_data[policy->cpu]; + + return sprintf(buf, "%d\n", ratio * cpu->pstate.scaling); +} + +cpufreq_freq_attr_ro(base_frequency); + static struct freq_attr *hwp_cpufreq_attrs[] = { &energy_performance_preference, &energy_performance_available_preferences, + &base_frequency, NULL, }; @@ -1778,7 +1818,7 @@ static const struct pstate_funcs knl_funcs = { static const struct x86_cpu_id intel_pstate_cpu_ids[] = { ICPU(INTEL_FAM6_SANDYBRIDGE, core_funcs), ICPU(INTEL_FAM6_SANDYBRIDGE_X, core_funcs), - ICPU(INTEL_FAM6_ATOM_SILVERMONT1, silvermont_funcs), + ICPU(INTEL_FAM6_ATOM_SILVERMONT, silvermont_funcs), ICPU(INTEL_FAM6_IVYBRIDGE, core_funcs), ICPU(INTEL_FAM6_HASWELL_CORE, core_funcs), ICPU(INTEL_FAM6_BROADWELL_CORE, core_funcs), @@ -1795,7 +1835,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = { ICPU(INTEL_FAM6_XEON_PHI_KNL, knl_funcs), ICPU(INTEL_FAM6_XEON_PHI_KNM, knl_funcs), ICPU(INTEL_FAM6_ATOM_GOLDMONT, core_funcs), - ICPU(INTEL_FAM6_ATOM_GEMINI_LAKE, core_funcs), + ICPU(INTEL_FAM6_ATOM_GOLDMONT_PLUS, core_funcs), ICPU(INTEL_FAM6_SKYLAKE_X, core_funcs), {} }; |