macintosh/rack-meter: Convert cputime64_t use to u64

cputime_t is going to be removed and replaced by nsecs units,
so convert the drivers/macintosh/rack-meter.c use to u64..

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1485832191-26889-5-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/drivers/macintosh/rack-meter.c b/drivers/macintosh/rack-meter.c
index c114594136d41d11cb54fc691a2014c756b40f51..e199fd6c71ced6dfbe94bb4e0f7581d6ff408550 100644 (file)
--- a/drivers/macintosh/rack-meter.c
+++ b/drivers/macintosh/rack-meter.c
@@ -52,8 +52,8 @@ struct rackmeter_dma {
 struct rackmeter_cpu {
        struct delayed_work     sniffer;
        struct rackmeter        *rm;
-       cputime64_t             prev_wall;
-       cputime64_t             prev_idle;
+       u64                     prev_wall;
+       u64                     prev_idle;
        int                     zero;
 } ____cacheline_aligned;
 
@@ -81,7 +81,7 @@ static int rackmeter_ignore_nice;
 /* This is copied from cpufreq_ondemand, maybe we should put it in
  * a common header somewhere
  */
-static inline cputime64_t get_cpu_idle_time(unsigned int cpu)
+static inline u64 get_cpu_idle_time(unsigned int cpu)
 {
        u64 retval;
 
@@ -91,7 +91,7 @@ static inline cputime64_t get_cpu_idle_time(unsigned int cpu)
        if (rackmeter_ignore_nice)
                retval += kcpustat_cpu(cpu).cpustat[CPUTIME_NICE];
 
-       return nsecs_to_cputime64(retval);
+       return retval;
 }
 
 static void rackmeter_setup_i2s(struct rackmeter *rm)
@@ -217,23 +217,23 @@ static void rackmeter_do_timer(struct work_struct *work)
                container_of(work, struct rackmeter_cpu, sniffer.work);
        struct rackmeter *rm = rcpu->rm;
        unsigned int cpu = smp_processor_id();
-       cputime64_t cur_jiffies, total_idle_ticks;
-       unsigned int total_ticks, idle_ticks;
+       u64 cur_nsecs, total_idle_nsecs;
+       u64 total_nsecs, idle_nsecs;
        int i, offset, load, cumm, pause;
 
-       cur_jiffies = jiffies64_to_cputime64(get_jiffies_64());
-       total_ticks = (unsigned int) (cur_jiffies - rcpu->prev_wall);
-       rcpu->prev_wall = cur_jiffies;
+       cur_nsecs = jiffies64_to_nsecs(get_jiffies_64());
+       total_nsecs = cur_nsecs - rcpu->prev_wall;
+       rcpu->prev_wall = cur_nsecs;
 
-       total_idle_ticks = get_cpu_idle_time(cpu);
-       idle_ticks = (unsigned int) (total_idle_ticks - rcpu->prev_idle);
-       idle_ticks = min(idle_ticks, total_ticks);
-       rcpu->prev_idle = total_idle_ticks;
+       total_idle_nsecs = get_cpu_idle_time(cpu);
+       idle_nsecs = total_idle_nsecs - rcpu->prev_idle;
+       idle_nsecs = min(idle_nsecs, total_nsecs);
+       rcpu->prev_idle = total_idle_nsecs;
 
        /* We do a very dumb calculation to update the LEDs for now,
         * we'll do better once we have actual PWM implemented
         */
-       load = (9 * (total_ticks - idle_ticks)) / total_ticks;
+       load = div64_u64(9 * (total_nsecs - idle_nsecs), total_nsecs);
 
        offset = cpu << 3;
        cumm = 0;
@@ -278,7 +278,7 @@ static void rackmeter_init_cpu_sniffer(struct rackmeter *rm)
                        continue;
                rcpu = &rm->cpu[cpu];
                rcpu->prev_idle = get_cpu_idle_time(cpu);
-               rcpu->prev_wall = jiffies64_to_cputime64(get_jiffies_64());
+               rcpu->prev_wall = jiffies64_to_nsecs(get_jiffies_64());
                schedule_delayed_work_on(cpu, &rm->cpu[cpu].sniffer,
                                         msecs_to_jiffies(CPU_SAMPLING_RATE));
        }