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| author | Dietmar Eggemann <dietmar.eggemann@arm.com> | 2018-02-26 14:11:03 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-02-26 23:27:56 +0100 |
| commit | 9326fdf3fbdfbc3c78de001969df8256913d98e7 (patch) | |
| tree | afab0468017276957e58cb86be1fa7abbc0bcdb6 | |
| parent | Linux 4.16-rc2 (diff) | |
| download | linux-9326fdf3fbdfbc3c78de001969df8256913d98e7.tar.xz linux-9326fdf3fbdfbc3c78de001969df8256913d98e7.zip | |
cpufreq: scpi: invoke frequency-invariance setter function
Commit 343a8d17fa8d (cpufreq: scpi: remove arm_big_little dependency)
changed the cpufreq driver on juno from arm_big_little to scpi.
The scpi set_target function does not call the frequency-invariance
setter function arch_set_freq_scale() like the arm_big_little set_target
function does. As a result the task scheduler load and utilization
signals are not frequency-invariant on this platform anymore.
Fix this by adding a call to arch_set_freq_scale() into
scpi_cpufreq_set_target().
Fixes: 343a8d17fa8d (cpufreq: scpi: remove arm_big_little dependency)
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/cpufreq/scpi-cpufreq.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c index c32a833e1b00..d300a163945f 100644 --- a/drivers/cpufreq/scpi-cpufreq.c +++ b/drivers/cpufreq/scpi-cpufreq.c @@ -51,15 +51,23 @@ static unsigned int scpi_cpufreq_get_rate(unsigned int cpu) static int scpi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index) { + unsigned long freq = policy->freq_table[index].frequency; struct scpi_data *priv = policy->driver_data; - u64 rate = policy->freq_table[index].frequency * 1000; + u64 rate = freq * 1000; int ret; ret = clk_set_rate(priv->clk, rate); - if (!ret && (clk_get_rate(priv->clk) != rate)) - ret = -EIO; - return ret; + if (ret) + return ret; + + if (clk_get_rate(priv->clk) != rate) + return -EIO; + + arch_set_freq_scale(policy->related_cpus, freq, + policy->cpuinfo.max_freq); + + return 0; } static int |