cpufreq: schedutil: Pass sg_policy to get_next_freq()

get_next_freq() uses sg_cpu only to get sg_policy, which the callers of
get_next_freq() already have. Pass sg_policy instead of sg_cpu to
get_next_freq(), to make it more efficient.

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

diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index 3ab2aea..cd7cd48 100644 (file)
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -116,7 +116,7 @@ static void sugov_update_commit(struct sugov_policy *sg_policy, u64 time,
 
 /**
  * get_next_freq - Compute a new frequency for a given cpufreq policy.
- * @sg_cpu: schedutil cpu object to compute the new frequency for.
+ * @sg_policy: schedutil policy object to compute the new frequency for.
  * @util: Current CPU utilization.
  * @max: CPU capacity.
  *
@@ -136,10 +136,9 @@ static void sugov_update_commit(struct sugov_policy *sg_policy, u64 time,
  * next_freq (as calculated above) is returned, subject to policy min/max and
  * cpufreq driver limitations.
  */
-static unsigned int get_next_freq(struct sugov_cpu *sg_cpu, unsigned long util,
-                                 unsigned long max)
+static unsigned int get_next_freq(struct sugov_policy *sg_policy,
+                                 unsigned long util, unsigned long max)
 {
-       struct sugov_policy *sg_policy = sg_cpu->sg_policy;
        struct cpufreq_policy *policy = sg_policy->policy;
        unsigned int freq = arch_scale_freq_invariant() ?
                                policy->cpuinfo.max_freq : policy->cur;
@@ -213,7 +212,7 @@ static void sugov_update_single(struct update_util_data *hook, u64 time,
        } else {
                sugov_get_util(&util, &max);
                sugov_iowait_boost(sg_cpu, &util, &max);
-               next_f = get_next_freq(sg_cpu, util, max);
+               next_f = get_next_freq(sg_policy, util, max);
        }
        sugov_update_commit(sg_policy, time, next_f);
 }
@@ -267,7 +266,7 @@ static unsigned int sugov_next_freq_shared(struct sugov_cpu *sg_cpu,
                sugov_iowait_boost(j_sg_cpu, &util, &max);
        }
 
-       return get_next_freq(sg_cpu, util, max);
+       return get_next_freq(sg_policy, util, max);
 }
 
 static void sugov_update_shared(struct update_util_data *hook, u64 time,