[S390] cputime: add sparse checking and cleanup
[linux-2.6.git] / drivers / macintosh / rack-meter.c
index 2637c13..909908e 100644 (file)
@@ -83,11 +83,10 @@ static inline cputime64_t get_cpu_idle_time(unsigned int cpu)
 {
        cputime64_t retval;
 
-       retval = cputime64_add(kstat_cpu(cpu).cpustat.idle,
-                       kstat_cpu(cpu).cpustat.iowait);
+       retval = kstat_cpu(cpu).cpustat.idle + kstat_cpu(cpu).cpustat.iowait;
 
        if (rackmeter_ignore_nice)
-               retval = cputime64_add(retval, kstat_cpu(cpu).cpustat.nice);
+               retval += kstat_cpu(cpu).cpustat.nice;
 
        return retval;
 }
@@ -220,13 +219,11 @@ static void rackmeter_do_timer(struct work_struct *work)
        int i, offset, load, cumm, pause;
 
        cur_jiffies = jiffies64_to_cputime64(get_jiffies_64());
-       total_ticks = (unsigned int)cputime64_sub(cur_jiffies,
-                                                 rcpu->prev_wall);
+       total_ticks = (unsigned int) (cur_jiffies - rcpu->prev_wall);
        rcpu->prev_wall = cur_jiffies;
 
        total_idle_ticks = get_cpu_idle_time(cpu);
-       idle_ticks = (unsigned int) cputime64_sub(total_idle_ticks,
-                               rcpu->prev_idle);
+       idle_ticks = (unsigned int) (total_idle_ticks - rcpu->prev_idle);
        rcpu->prev_idle = total_idle_ticks;
 
        /* We do a very dumb calculation to update the LEDs for now,