diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 1 | ||||
| -rw-r--r-- | arch/s390/include/asm/vtime.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/vtime.c | 51 |
3 files changed, 34 insertions, 19 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index a9b1328e375d..cbd81f615691 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -178,6 +178,7 @@ config S390 select HAVE_RSEQ select HAVE_SYSCALL_TRACEPOINTS select HAVE_VIRT_CPU_ACCOUNTING + select HAVE_VIRT_CPU_ACCOUNTING_IDLE select IOMMU_HELPER if PCI select IOMMU_SUPPORT if PCI select MODULES_USE_ELF_RELA diff --git a/arch/s390/include/asm/vtime.h b/arch/s390/include/asm/vtime.h index 3622d4ebc73a..fac6a67988eb 100644 --- a/arch/s390/include/asm/vtime.h +++ b/arch/s390/include/asm/vtime.h @@ -2,7 +2,6 @@ #ifndef _S390_VTIME_H #define _S390_VTIME_H -#define __ARCH_HAS_VTIME_ACCOUNT #define __ARCH_HAS_VTIME_TASK_SWITCH #endif /* _S390_VTIME_H */ diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 8df10d3c8f6c..5aaa2ca6a928 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -222,35 +222,50 @@ void vtime_flush(struct task_struct *tsk) S390_lowcore.avg_steal_timer = avg_steal; } +static u64 vtime_delta(void) +{ + u64 timer = S390_lowcore.last_update_timer; + + S390_lowcore.last_update_timer = get_vtimer(); + + return timer - S390_lowcore.last_update_timer; +} + /* * Update process times based on virtual cpu times stored by entry.S * to the lowcore fields user_timer, system_timer & steal_clock. */ -void vtime_account_irq_enter(struct task_struct *tsk) +void vtime_account_kernel(struct task_struct *tsk) { - u64 timer; - - timer = S390_lowcore.last_update_timer; - S390_lowcore.last_update_timer = get_vtimer(); - timer -= S390_lowcore.last_update_timer; + u64 delta = vtime_delta(); - if ((tsk->flags & PF_VCPU) && (irq_count() == 0)) - S390_lowcore.guest_timer += timer; - else if (hardirq_count()) - S390_lowcore.hardirq_timer += timer; - else if (in_serving_softirq()) - S390_lowcore.softirq_timer += timer; + if (tsk->flags & PF_VCPU) + S390_lowcore.guest_timer += delta; else - S390_lowcore.system_timer += timer; + S390_lowcore.system_timer += delta; - virt_timer_forward(timer); + virt_timer_forward(delta); } -EXPORT_SYMBOL_GPL(vtime_account_irq_enter); - -void vtime_account_kernel(struct task_struct *tsk) -__attribute__((alias("vtime_account_irq_enter"))); EXPORT_SYMBOL_GPL(vtime_account_kernel); +void vtime_account_softirq(struct task_struct *tsk) +{ + u64 delta = vtime_delta(); + + S390_lowcore.softirq_timer += delta; + + virt_timer_forward(delta); +} + +void vtime_account_hardirq(struct task_struct *tsk) +{ + u64 delta = vtime_delta(); + + S390_lowcore.hardirq_timer += delta; + + virt_timer_forward(delta); +} + /* * Sorted add to a list. List is linear searched until first bigger * element is found. |