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Diffstat (limited to 'arch/s390/kernel/vtime.c')
-rw-r--r--arch/s390/kernel/vtime.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 98f850e00008..a69a0911ed0e 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -124,7 +124,7 @@ static void account_system_index_scaled(struct task_struct *p, u64 cputime,
*/
static int do_account_vtime(struct task_struct *tsk)
{
- u64 timer, clock, user, guest, system, hardirq, softirq, steal;
+ u64 timer, clock, user, guest, system, hardirq, softirq;
timer = S390_lowcore.last_update_timer;
clock = S390_lowcore.last_update_clock;
@@ -182,12 +182,6 @@ static int do_account_vtime(struct task_struct *tsk)
if (softirq)
account_system_index_scaled(tsk, softirq, CPUTIME_SOFTIRQ);
- steal = S390_lowcore.steal_timer;
- if ((s64) steal > 0) {
- S390_lowcore.steal_timer = 0;
- account_steal_time(cputime_to_nsecs(steal));
- }
-
return virt_timer_forward(user + guest + system + hardirq + softirq);
}
@@ -213,8 +207,19 @@ void vtime_task_switch(struct task_struct *prev)
*/
void vtime_flush(struct task_struct *tsk)
{
+ u64 steal, avg_steal;
+
if (do_account_vtime(tsk))
virt_timer_expire();
+
+ steal = S390_lowcore.steal_timer;
+ avg_steal = S390_lowcore.avg_steal_timer / 2;
+ if ((s64) steal > 0) {
+ S390_lowcore.steal_timer = 0;
+ account_steal_time(steal);
+ avg_steal += steal;
+ }
+ S390_lowcore.avg_steal_timer = avg_steal;
}
/*