diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/cputime.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/vtime.c | 13 | ||||
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 4 |
3 files changed, 13 insertions, 5 deletions
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h index 023d5ae24482..d2ff41370c0c 100644 --- a/arch/s390/include/asm/cputime.h +++ b/arch/s390/include/asm/cputime.h @@ -14,6 +14,7 @@ #define __ARCH_HAS_VTIME_ACCOUNT +#define __ARCH_HAS_VTIME_TASK_SWITCH /* We want to use full resolution of the CPU timer: 2**-12 micro-seconds. */ diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 790334427895..e84b8b68444a 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -112,7 +112,12 @@ void vtime_task_switch(struct task_struct *prev) S390_lowcore.system_timer = ti->system_timer; } -void account_process_tick(struct task_struct *tsk, int user_tick) +/* + * In s390, accounting pending user time also implies + * accounting system time in order to correctly compute + * the stolen time accounting. + */ +void vtime_account_user(struct task_struct *tsk) { if (do_account_vtime(tsk, HARDIRQ_OFFSET)) virt_timer_expire(); @@ -127,6 +132,8 @@ void vtime_account(struct task_struct *tsk) struct thread_info *ti = task_thread_info(tsk); u64 timer, system; + WARN_ON_ONCE(!irqs_disabled()); + timer = S390_lowcore.last_update_timer; S390_lowcore.last_update_timer = get_vtimer(); S390_lowcore.system_timer += timer - S390_lowcore.last_update_timer; @@ -140,6 +147,10 @@ void vtime_account(struct task_struct *tsk) } EXPORT_SYMBOL_GPL(vtime_account); +void vtime_account_system(struct task_struct *tsk) +__attribute__((alias("vtime_account"))); +EXPORT_SYMBOL_GPL(vtime_account_system); + void __kprobes vtime_stop_cpu(void) { struct s390_idle_data *idle = &__get_cpu_var(s390_idle); diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index ecced9d18986..d91a95568002 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -608,9 +608,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu) kvm_s390_deliver_pending_interrupts(vcpu); vcpu->arch.sie_block->icptcode = 0; - local_irq_disable(); kvm_guest_enter(); - local_irq_enable(); VCPU_EVENT(vcpu, 6, "entering sie flags %x", atomic_read(&vcpu->arch.sie_block->cpuflags)); trace_kvm_s390_sie_enter(vcpu, @@ -629,9 +627,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu) VCPU_EVENT(vcpu, 6, "exit sie icptcode %d", vcpu->arch.sie_block->icptcode); trace_kvm_s390_sie_exit(vcpu, vcpu->arch.sie_block->icptcode); - local_irq_disable(); kvm_guest_exit(); - local_irq_enable(); memcpy(&vcpu->run->s.regs.gprs[14], &vcpu->arch.sie_block->gg14, 16); return rc; |