On Fri, Feb 5, 2021 at 12:59 PM Peter Zijlstra <[email protected]> wrote: > > On Thu, Feb 04, 2021 at 06:34:32PM +0100, Rafael J. Wysocki wrote: > > > arch/x86/kernel/smpboot.c | 1 + > > drivers/cpufreq/acpi-cpufreq.c | 8 ++++++++ > > 2 files changed, 9 insertions(+) > > > > Index: linux-pm/drivers/cpufreq/acpi-cpufreq.c > > =================================================================== > > --- linux-pm.orig/drivers/cpufreq/acpi-cpufreq.c > > +++ linux-pm/drivers/cpufreq/acpi-cpufreq.c > > @@ -806,6 +806,14 @@ static int acpi_cpufreq_cpu_init(struct > > 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); > > Index: linux-pm/arch/x86/kernel/smpboot.c > > =================================================================== > > --- linux-pm.orig/arch/x86/kernel/smpboot.c > > +++ linux-pm/arch/x86/kernel/smpboot.c > > @@ -1833,6 +1833,7 @@ void arch_set_max_freq_ratio(bool turbo_ > > arch_max_freq_ratio = turbo_disabled ? SCHED_CAPACITY_SCALE : > > arch_turbo_freq_ratio; > > } > > +EXPORT_SYMBOL_GPL(arch_set_max_freq_ratio); > > Acked-by: Peter Zijlstra (Intel) <[email protected]>
Thanks, I'm queuing up this lot for a post-rc7 late push.
