cpufreq: Move traces and update to policy->cur to cpufreq core

The cpufreq core handles the updates to policy->cur and recording of
cpufreq trace events for all the governors except schedutil's fast
switch case.

Move that as well to cpufreq core for consistency and readability.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 2d0e2e4..db00693 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2068,6 +2068,7 @@ unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy,
 					unsigned int target_freq)
 {
 	unsigned int freq;
+	int cpu;
 
 	target_freq = clamp_val(target_freq, policy->min, policy->max);
 	freq = cpufreq_driver->fast_switch(policy, target_freq);
@@ -2075,10 +2076,16 @@ unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy,
 	if (!freq)
 		return 0;
 
+	policy->cur = freq;
 	arch_set_freq_scale(policy->related_cpus, freq,
 			    policy->cpuinfo.max_freq);
 	cpufreq_stats_record_transition(policy, freq);
 
+	if (trace_cpu_frequency_enabled()) {
+		for_each_cpu(cpu, policy->cpus)
+			trace_cpu_frequency(freq, cpu);
+	}
+
 	return freq;
 }
 EXPORT_SYMBOL_GPL(cpufreq_driver_fast_switch);