diff options
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 1 | ||||
| -rw-r--r-- | drivers/cpufreq/acpi-cpufreq.c | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 117e24fbfd8a..02813a7f3a7c 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1833,6 +1833,7 @@ void arch_set_max_freq_ratio(bool turbo_disabled) arch_max_freq_ratio = turbo_disabled ? SCHED_CAPACITY_SCALE : arch_turbo_freq_ratio; } +EXPORT_SYMBOL_GPL(arch_set_max_freq_ratio); static bool turbo_disabled(void) { diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 4614f1c6f50a..d3e5a6fceb61 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -806,6 +806,14 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy) state_count++; valid_states++; data->first_perf_state = valid_states; + } else { + /* + * If the maximum "boost" frequency is unknown, ask the arch + * scale-invariance code to use the "nominal" performance for + * CPU utilization scaling so as to prevent the schedutil + * governor from selecting inadequate CPU frequencies. + */ + arch_set_max_freq_ratio(true); } freq_table = kcalloc(state_count, sizeof(*freq_table), GFP_KERNEL); |