[PATCH v3 08/20] KVM: arm/arm64: Rename soft timer to bg_timer

Christoffer Dall
2017-09-23T00:42:06Z

As we are about to introduce a separate hrtimer for the physical timer,
call this timer bg_timer, because we refer to this timer as the
background timer in the code and comments elsewhere.

Signed-off-by: Christoffer Dall <cdall@linaro.org>
---
include/kvm/arm_arch_timer.h | 3 +--
virt/kvm/arm/arch_timer.c | 22 +++++++++++-----------
2 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h
index f0053f8..dcbb2e1 100644
--- a/include/kvm/arm_arch_timer.h
+++ b/include/kvm/arm_arch_timer.h
@@ -43,8 +43,7 @@ struct arch_timer_cpu {
struct arch_timer_context ptimer;

/* Background timer used when the guest is not running */
- struct hrtimer timer;
-
+ struct hrtimer bg_timer;
/* Work queued with the above timer expires */
struct work_struct expired;

diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index 871d8ae..c2e8326 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -56,7 +56,7 @@ u64 kvm_phys_timer_read(void)
return timecounter->cc->read(timecounter->cc);
}

-static bool soft_timer_is_armed(struct arch_timer_cpu *timer)
+static bool bg_timer_is_armed(struct arch_timer_cpu *timer)
{
return timer->armed;
}
@@ -154,13 +154,13 @@ static u64 kvm_timer_earliest_exp(struct kvm_vcpu *vcpu)
return min(min_virt, min_phys);
}

-static enum hrtimer_restart kvm_timer_expire(struct hrtimer *hrt)
+static enum hrtimer_restart kvm_bg_timer_expire(struct hrtimer *hrt)
{
struct arch_timer_cpu *timer;
struct kvm_vcpu *vcpu;
u64 ns;

- timer = container_of(hrt, struct arch_timer_cpu, timer);
+ timer = container_of(hrt, struct arch_timer_cpu, bg_timer);
vcpu = container_of(timer, struct kvm_vcpu, arch.timer_cpu);

/*
@@ -267,7 +267,7 @@ static void kvm_timer_emulate(struct kvm_vcpu *vcpu,
return;

/* The timer has not yet expired, schedule a background timer */
- soft_timer_start(&timer->timer, kvm_timer_compute_delta(timer_ctx));
+ soft_timer_start(&timer->bg_timer, kvm_timer_compute_delta(timer_ctx));
}

/*
@@ -281,7 +281,7 @@ void kvm_timer_schedule(struct kvm_vcpu *vcpu)
struct arch_timer_context *vtimer = vcpu_vtimer(vcpu);
struct arch_timer_context *ptimer = vcpu_ptimer(vcpu);

- BUG_ON(soft_timer_is_armed(timer));
+ BUG_ON(bg_timer_is_armed(timer));

/*
* No need to schedule a background timer if any guest timer has
@@ -303,14 +303,14 @@ void kvm_timer_schedule(struct kvm_vcpu *vcpu)
* Set the earliest expiration time among the guest timers.
*/
timer->armed = true;
- soft_timer_start(&timer->timer, kvm_timer_earliest_exp(vcpu));
+ soft_timer_start(&timer->bg_timer, kvm_timer_earliest_exp(vcpu));
}

void kvm_timer_unschedule(struct kvm_vcpu *vcpu)
{
struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;

- soft_timer_cancel(&timer->timer, &timer->expired);
+ soft_timer_cancel(&timer->bg_timer, &timer->expired);
timer->armed = false;
}

@@ -447,7 +447,7 @@ void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu)
* This is to cancel the background timer for the physical timer
* emulation if it is set.
*/
- soft_timer_cancel(&timer->timer, &timer->expired);
+ soft_timer_cancel(&timer->bg_timer, &timer->expired);

/*
* The guest could have modified the timer registers or the timer
@@ -504,8 +504,8 @@ void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu)
vcpu_ptimer(vcpu)->cntvoff = 0;

INIT_WORK(&timer->expired, kvm_timer_inject_irq_work);
- hrtimer_init(&timer->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
- timer->timer.function = kvm_timer_expire;
+ hrtimer_init(&timer->bg_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
+ timer->bg_timer.function = kvm_bg_timer_expire;

vtimer->irq.irq = default_vtimer_irq.irq;
ptimer->irq.irq = default_ptimer_irq.irq;
@@ -614,7 +614,7 @@ void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu)
struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
struct arch_timer_context *vtimer = vcpu_vtimer(vcpu);

- soft_timer_cancel(&timer->timer, &timer->expired);
+ soft_timer_cancel(&timer->bg_timer, &timer->expired);
kvm_vgic_unmap_phys_irq(vcpu, vtimer->irq.irq);
}

--
2.9.0