Messages in this thread | | | Date | Wed, 9 Jan 2019 16:15:11 +0530 | From | Viresh Kumar <> | Subject | Re: [PATCH] cpufreq: scmi: Fix frequency invariance in slow path |
| |
On 09-01-19, 10:42, Quentin Perret wrote: > The scmi-cpufreq driver calls the arch_set_freq_scale() callback on > frequency changes to provide scale-invariant load-tracking signals to > the scheduler. However, in the slow path, it does so while specifying > the current and max frequencies in different units, hence resulting in a > broken freq_scale factor. > > Fix this by passing all frequencies in KHz, as stored in the CPUFreq > frequency table. > > Fixes: 99d6bdf33877 ("cpufreq: add support for CPU DVFS based on SCMI > message protocol") > Signed-off-by: Quentin Perret <quentin.perret@arm.com> > --- > drivers/cpufreq/scmi-cpufreq.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c > index 50b1551ba894..3f0693439486 100644 > --- a/drivers/cpufreq/scmi-cpufreq.c > +++ b/drivers/cpufreq/scmi-cpufreq.c > @@ -52,9 +52,9 @@ scmi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index) > int ret; > struct scmi_data *priv = policy->driver_data; > struct scmi_perf_ops *perf_ops = handle->perf_ops; > - u64 freq = policy->freq_table[index].frequency * 1000; > + u64 freq = policy->freq_table[index].frequency; > > - ret = perf_ops->freq_set(handle, priv->domain_id, freq, false); > + ret = perf_ops->freq_set(handle, priv->domain_id, freq * 1000, false); > if (!ret) > arch_set_freq_scale(policy->related_cpus, freq, > policy->cpuinfo.max_freq);
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
-- viresh
| |