cpufreq: interactive: Use generic get_cpu_idle_time() from cpufreq.c

Now that a generic version of get_cpu_idle_time() is available, use that for the interactive governor.

[toddpoynor@google.com: commit text changes]
Change-Id: Ia38b57085aac99ec3d415fe44471d5dfde519c2c
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>

diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cpufreq_interactive.c
index 8297ac69863b539860f08fe18c6b7c8095b014ee..ff77b300df88b3a504753527603043b35a49d385 100644 (file)
--- a/drivers/cpufreq/cpufreq_interactive.c
+++ b/drivers/cpufreq/cpufreq_interactive.c
@@ -30,8 +30,6 @@
 #include <linux/workqueue.h>
 #include <linux/kthread.h>
 #include <linux/slab.h>
-#include <linux/kernel_stat.h>
-#include <asm/cputime.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/cpufreq_interactive.h>
@@ -119,44 +117,6 @@ struct cpufreq_interactive_tunables *common_tunables;
 
 static struct attribute_group *get_sysfs_attr(void);
 
-static inline cputime64_t get_cpu_idle_time_jiffy(unsigned int cpu,
-                                                 cputime64_t *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 = jiffies_to_usecs(cur_wall_time);
-
-       return jiffies_to_usecs(idle_time);
-}
-
-static inline cputime64_t get_cpu_idle_time(
-       unsigned int cpu,
-       cputime64_t *wall,
-       bool io_is_busy)
-{
-       u64 idle_time = get_cpu_idle_time_us(cpu, wall);
-
-       if (idle_time == -1ULL)
-               idle_time = get_cpu_idle_time_jiffy(cpu, wall);
-       else if (!io_is_busy)
-               idle_time += get_cpu_iowait_time_us(cpu, wall);
-
-       return idle_time;
-}
-
 static void cpufreq_interactive_timer_resched(
        struct cpufreq_interactive_cpuinfo *pcpu)
 {