cpufreq: Use transition_delay_us for legacy governors as well

The policy->transition_delay_us field is used only by the schedutil
governor currently, and this field describes how fast the driver wants
the cpufreq governor to change CPUs frequency. It should rather be a
common thing across all governors, as it doesn't have any schedutil
dependency here.

Create a new helper cpufreq_policy_transition_delay_us() to get the
transition delay across all governors.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 1 insertions, 10 deletions

diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index 29a397067ffa..89c4dd9777bb 100644
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -528,16 +528,7 @@ static int sugov_init(struct cpufreq_policy *policy)
                 goto stop_kthread;
         }
 
-        if (policy->transition_delay_us) {
-                tunables->rate_limit_us = policy->transition_delay_us;
-        } else {
-                unsigned int lat;
-
-                tunables->rate_limit_us = LATENCY_MULTIPLIER;
-                lat = policy->cpuinfo.transition_latency / NSEC_PER_USEC;
-                if (lat)
-                        tunables->rate_limit_us *= lat;
-        }
+        tunables->rate_limit_us = cpufreq_policy_transition_delay_us(policy);
 
         policy->governor_data = sg_policy;
         sg_policy->tunables = tunables;