diff options
Diffstat (limited to 'arch/s390/kernel/vtime.c')
| -rw-r--r-- | arch/s390/kernel/vtime.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 22a895ecb7a4..dfe6f0856617 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -32,7 +32,7 @@ DEFINE_PER_CPU(struct vtimer_queue, virt_cpu_timer); * Update process times based on virtual cpu times stored by entry.S * to the lowcore fields user_timer, system_timer & steal_clock. */ -void account_user_vtime(struct task_struct *tsk) +void account_tick_vtime(struct task_struct *tsk) { cputime_t cputime; __u64 timer, clock; @@ -76,6 +76,31 @@ void account_user_vtime(struct task_struct *tsk) * Update process times based on virtual cpu times stored by entry.S * to the lowcore fields user_timer, system_timer & steal_clock. */ +void account_vtime(struct task_struct *tsk) +{ + cputime_t cputime; + __u64 timer; + + timer = S390_lowcore.last_update_timer; + asm volatile (" STPT %0" /* Store current cpu timer value */ + : "=m" (S390_lowcore.last_update_timer) ); + S390_lowcore.system_timer += timer - S390_lowcore.last_update_timer; + + cputime = S390_lowcore.user_timer >> 12; + S390_lowcore.user_timer -= cputime << 12; + S390_lowcore.steal_clock -= cputime << 12; + account_user_time(tsk, cputime); + + cputime = S390_lowcore.system_timer >> 12; + S390_lowcore.system_timer -= cputime << 12; + S390_lowcore.steal_clock -= cputime << 12; + account_system_time(tsk, 0, cputime); +} + +/* + * Update process times based on virtual cpu times stored by entry.S + * to the lowcore fields user_timer, system_timer & steal_clock. + */ void account_system_vtime(struct task_struct *tsk) { cputime_t cputime; |