Pull misc into release branch

[linux-2.6-omap-h63xx.git] / drivers / cpufreq / cpufreq_ondemand.c

diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index dc6f357390e22c557018755cee756825c3b30eda..e794527e49251d10564e703805b1965844c12b65 100644 (file)
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -96,15 +96,25 @@ static struct dbs_tuners {
 
 static inline cputime64_t get_cpu_idle_time(unsigned int cpu)
 {
-       cputime64_t retval;
+       cputime64_t idle_time;
+       cputime64_t cur_jiffies;
+       cputime64_t busy_time;
 
-       retval = cputime64_add(kstat_cpu(cpu).cpustat.idle,
-                       kstat_cpu(cpu).cpustat.iowait);
+       cur_jiffies = jiffies64_to_cputime64(get_jiffies_64());
+       busy_time = cputime64_add(kstat_cpu(cpu).cpustat.user,
+                       kstat_cpu(cpu).cpustat.system);
 
-       if (dbs_tuners_ins.ignore_nice)
-               retval = cputime64_add(retval, kstat_cpu(cpu).cpustat.nice);
+       busy_time = cputime64_add(busy_time, kstat_cpu(cpu).cpustat.irq);
+       busy_time = cputime64_add(busy_time, kstat_cpu(cpu).cpustat.softirq);
+       busy_time = cputime64_add(busy_time, kstat_cpu(cpu).cpustat.steal);
 
-       return retval;
+       if (!dbs_tuners_ins.ignore_nice) {
+               busy_time = cputime64_add(busy_time,
+                               kstat_cpu(cpu).cpustat.nice);
+       }
+
+       idle_time = cputime64_sub(cur_jiffies, busy_time);
+       return idle_time;
 }
 
 /*
@@ -339,7 +349,8 @@ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
        cur_jiffies = jiffies64_to_cputime64(get_jiffies_64());
        total_ticks = (unsigned int) cputime64_sub(cur_jiffies,
                        this_dbs_info->prev_cpu_wall);
-       this_dbs_info->prev_cpu_wall = cur_jiffies;
+       this_dbs_info->prev_cpu_wall = get_jiffies_64();
+
        if (!total_ticks)
                return;
        /*