delayacct: Remove braindamaged type conversions

Converting cputime to timespec and timespec to nanoseconds makes no
sense. Use cputime_to_ns() and be done with it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>

1 files changed, 7 insertions, 11 deletions

diff --git a/kernel/delayacct.c b/kernel/delayacct.c
index cf2e65dddb19..ef90b04d783f 100644
--- a/kernel/delayacct.c
+++ b/kernel/delayacct.c
@@ -82,23 +82,19 @@ void __delayacct_blkio_end(void)
 
 int __delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk)
 {
-        s64 tmp;
-        unsigned long t1;
-        unsigned long long t2, t3;
-        unsigned long flags;
-        struct timespec ts;
         cputime_t utime, stime, stimescaled, utimescaled;
+        unsigned long long t2, t3;
+        unsigned long flags, t1;
+        s64 tmp;
 
-        tmp = (s64)d->cpu_run_real_total;
         task_cputime(tsk, &utime, &stime);
-        cputime_to_timespec(utime + stime, &ts);
-        tmp += timespec_to_ns(&ts);
+        tmp = (s64)d->cpu_run_real_total;
+        tmp += cputime_to_nsecs(utime + stime);
         d->cpu_run_real_total = (tmp < (s64)d->cpu_run_real_total) ? 0 : tmp;
 
-        tmp = (s64)d->cpu_scaled_run_real_total;
         task_cputime_scaled(tsk, &utimescaled, &stimescaled);
-        cputime_to_timespec(utimescaled + stimescaled, &ts);
-        tmp += timespec_to_ns(&ts);
+        tmp = (s64)d->cpu_scaled_run_real_total;
+        tmp += cputime_to_nsecs(utimescaled + stimescaled);
         d->cpu_scaled_run_real_total =
                 (tmp < (s64)d->cpu_scaled_run_real_total) ? 0 : tmp;