Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-android

[firefly-linux-kernel-4.4.55.git] / drivers / cpufreq / cpufreq_governor.c

diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 27b0e2a295ea6055367a12af5023ac3ca03d12f9..ece1df8eac852f0c5da415fef74b2f848554a1cb 100644 (file)
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -23,20 +23,11 @@
 #include <linux/kernel_stat.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
-#include <linux/tick.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
 
 #include "cpufreq_governor.h"
 
-static struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy)
-{
-       if (have_governor_per_policy())
-               return &policy->kobj;
-       else
-               return cpufreq_global_kobject;
-}
-
 static struct attribute_group *get_sysfs_attr(struct dbs_data *dbs_data)
 {
        if (have_governor_per_policy())
@@ -45,41 +36,6 @@ static struct attribute_group *get_sysfs_attr(struct dbs_data *dbs_data)
                return dbs_data->cdata->attr_group_gov_sys;
 }
 
-static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
-{
-       u64 idle_time;
-       u64 cur_wall_time;
-       u64 busy_time;
-
-       cur_wall_time = jiffies64_to_cputime64(get_jiffies_64());
-
-       busy_time = kcpustat_cpu(cpu).cpustat[CPUTIME_USER];
-       busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SYSTEM];
-       busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_IRQ];
-       busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_SOFTIRQ];
-       busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_STEAL];
-       busy_time += kcpustat_cpu(cpu).cpustat[CPUTIME_NICE];
-
-       idle_time = cur_wall_time - busy_time;
-       if (wall)
-               *wall = cputime_to_usecs(cur_wall_time);
-
-       return cputime_to_usecs(idle_time);
-}
-
-u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy)
-{
-       u64 idle_time = get_cpu_idle_time_us(cpu, io_busy ? wall : NULL);
-
-       if (idle_time == -1ULL)
-               return get_cpu_idle_time_jiffy(cpu, wall);
-       else if (!io_busy)
-               idle_time += get_cpu_iowait_time_us(cpu, wall);
-
-       return idle_time;
-}
-EXPORT_SYMBOL_GPL(get_cpu_idle_time);
-
 void dbs_check_cpu(struct dbs_data *dbs_data, int cpu)
 {
        struct cpu_dbs_common_info *cdbs = dbs_data->cdata->get_cpu_cdbs(cpu);
@@ -396,6 +352,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 
                mutex_lock(&dbs_data->mutex);
                mutex_destroy(&cpu_cdbs->timer_mutex);
+               cpu_cdbs->cur_policy = NULL;
 
                mutex_unlock(&dbs_data->mutex);