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s390/cputime: simplify account_system_index_scaled

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The account_system_index_scaled gets two cputime values, a raw value
derived from CPU timer deltas and a scaled value. The scaled value
is always calculated from the raw value, the code can be simplified
by moving the scale_vtime call into account_system_index_scaled.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2017-05-12 15:31:38 +02:00
parent 6c386da799
commit b29e061bb7
1 changed files with 5 additions and 9 deletions
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14
arch/s390/kernel/vtime.c
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@ -110,11 +110,10 @@ static inline u64 scale_vtime(u64 vtime)
return vtime;
}
static void account_system_index_scaled(struct task_struct *p,
u64 cputime, u64 scaled,
static void account_system_index_scaled(struct task_struct *p, u64 cputime,
enum cpu_usage_stat index)
{
p->stimescaled += cputime_to_nsecs(scaled);
p->stimescaled += cputime_to_nsecs(scale_vtime(cputime));
account_system_index_time(p, cputime_to_nsecs(cputime), index);
}
@ -176,14 +175,11 @@ static int do_account_vtime(struct task_struct *tsk)
}
if (system)
account_system_index_scaled(tsk, system, scale_vtime(system),
CPUTIME_SYSTEM);
account_system_index_scaled(tsk, system, CPUTIME_SYSTEM);
if (hardirq)
account_system_index_scaled(tsk, hardirq, scale_vtime(hardirq),
CPUTIME_IRQ);
account_system_index_scaled(tsk, hardirq, CPUTIME_IRQ);
if (softirq)
account_system_index_scaled(tsk, softirq, scale_vtime(softirq),
CPUTIME_SOFTIRQ);
account_system_index_scaled(tsk, softirq, CPUTIME_SOFTIRQ);
steal = S390_lowcore.steal_timer;
if ((s64) steal > 0) {