- Update to 3.3-rc2.

[linux-flexiantxendom0-3.2.10.git] / drivers / cpufreq / cpufreq_ondemand.c

diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index dff761f..6081d57 100644 (file)
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -120,27 +120,26 @@ static struct dbs_tuners {
        .powersave_bias = 0,
 };
 
-static inline cputime64_t get_cpu_idle_time_jiffy(unsigned int cpu,
-                                                       cputime64_t *wall)
+static inline u64 get_cpu_idle_time_jiffy(unsigned int cpu, u64 *wall)
 {
-       cputime64_t idle_time;
-       cputime64_t cur_wall_time;
-       cputime64_t busy_time;
+       u64 idle_time;
+       u64 cur_wall_time;
+       u64 busy_time;
 
        cur_wall_time = jiffies64_to_cputime64(get_jiffies_64());
-       busy_time = cputime64_add(kstat_cpu(cpu).cpustat.user,
-                       kstat_cpu(cpu).cpustat.system);
 
-       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);
-       busy_time = cputime64_add(busy_time, kstat_cpu(cpu).cpustat.nice);
+       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 = cputime64_sub(cur_wall_time, busy_time);
+       idle_time = cur_wall_time - busy_time;
        if (wall)
-               *wall = (cputime64_t)jiffies_to_usecs(cur_wall_time);
+               *wall = jiffies_to_usecs(cur_wall_time);
 
-       return (cputime64_t)jiffies_to_usecs(idle_time);
+       return jiffies_to_usecs(idle_time);
 }
 
 static inline cputime64_t get_cpu_idle_time(unsigned int cpu, cputime64_t *wall)
@@ -346,7 +345,7 @@ static ssize_t store_ignore_nice_load(struct kobject *a, struct attribute *b,
                dbs_info->prev_cpu_idle = get_cpu_idle_time(j,
                                                &dbs_info->prev_cpu_wall);
                if (dbs_tuners_ins.ignore_nice)
-                       dbs_info->prev_cpu_nice = kstat_cpu(j).cpustat.nice;
+                       dbs_info->prev_cpu_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];
 
        }
        return count;
@@ -443,24 +442,24 @@ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
                cur_idle_time = get_cpu_idle_time(j, &cur_wall_time);
                cur_iowait_time = get_cpu_iowait_time(j, &cur_wall_time);
 
-               wall_time = (unsigned int) cputime64_sub(cur_wall_time,
-                               j_dbs_info->prev_cpu_wall);
+               wall_time = (unsigned int)
+                       (cur_wall_time - j_dbs_info->prev_cpu_wall);
                j_dbs_info->prev_cpu_wall = cur_wall_time;
 
-               idle_time = (unsigned int) cputime64_sub(cur_idle_time,
-                               j_dbs_info->prev_cpu_idle);
+               idle_time = (unsigned int)
+                       (cur_idle_time - j_dbs_info->prev_cpu_idle);
                j_dbs_info->prev_cpu_idle = cur_idle_time;
 
-               iowait_time = (unsigned int) cputime64_sub(cur_iowait_time,
-                               j_dbs_info->prev_cpu_iowait);
+               iowait_time = (unsigned int)
+                       (cur_iowait_time - j_dbs_info->prev_cpu_iowait);
                j_dbs_info->prev_cpu_iowait = cur_iowait_time;
 
                if (dbs_tuners_ins.ignore_nice) {
-                       cputime64_t cur_nice;
+                       u64 cur_nice;
                        unsigned long cur_nice_jiffies;
 
-                       cur_nice = cputime64_sub(kstat_cpu(j).cpustat.nice,
-                                        j_dbs_info->prev_cpu_nice);
+                       cur_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE] -
+                                        j_dbs_info->prev_cpu_nice;
                        /*
                         * Assumption: nice time between sampling periods will
                         * be less than 2^32 jiffies for 32 bit sys
@@ -468,7 +467,7 @@ static void dbs_check_cpu(struct cpu_dbs_info_s *this_dbs_info)
                        cur_nice_jiffies = (unsigned long)
                                        cputime64_to_jiffies64(cur_nice);
 
-                       j_dbs_info->prev_cpu_nice = kstat_cpu(j).cpustat.nice;
+                       j_dbs_info->prev_cpu_nice = kcpustat_cpu(j).cpustat[CPUTIME_NICE];
                        idle_time += jiffies_to_usecs(cur_nice_jiffies);
                }
 
@@ -647,10 +646,9 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 
                        j_dbs_info->prev_cpu_idle = get_cpu_idle_time(j,
                                                &j_dbs_info->prev_cpu_wall);
-                       if (dbs_tuners_ins.ignore_nice) {
+                       if (dbs_tuners_ins.ignore_nice)
                                j_dbs_info->prev_cpu_nice =
-                                               kstat_cpu(j).cpustat.nice;
-                       }
+                                               kcpustat_cpu(j).cpustat[CPUTIME_NICE];
                }
                this_dbs_info->cpu = cpu;
                this_dbs_info->rate_mult = 1;
@@ -739,11 +737,10 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 
 static int __init cpufreq_gov_dbs_init(void)
 {
-       cputime64_t wall;
        u64 idle_time;
        int cpu = get_cpu();
 
-       idle_time = get_cpu_idle_time_us(cpu, &wall);
+       idle_time = get_cpu_idle_time_us(cpu, NULL);
        put_cpu();
        if (idle_time != -1ULL) {
                /* Idle micro accounting is supported. Use finer thresholds */