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KVM: i8254: remove pit and kvm from kvm_kpit_state

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kvm isn't ever used and pit can be accessed with container_of.
If you *really* need kvm, pit_state_to_pit(ps)->kvm.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Radim Krčmář 2016-03-02 22:56:48 +01:00 • committed by Paolo Bonzini
parent 08e5ccf3ae
commit a3e1311549
2 changed files with 9 additions and 7 deletions
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14
arch/x86/kvm/i8254.c
View file

@ -215,10 +215,16 @@ static void pit_latch_status(struct kvm_pit *pit, int channel)
} }
} }
static inline struct kvm_pit *pit_state_to_pit(struct kvm_kpit_state *ps)
{
return container_of(ps, struct kvm_pit, pit_state);
}
static void kvm_pit_ack_irq(struct kvm_irq_ack_notifier *kian) static void kvm_pit_ack_irq(struct kvm_irq_ack_notifier *kian)
{ {
struct kvm_kpit_state *ps = container_of(kian, struct kvm_kpit_state, struct kvm_kpit_state *ps = container_of(kian, struct kvm_kpit_state,
irq_ack_notifier); irq_ack_notifier);
struct kvm_pit *pit = pit_state_to_pit(ps);
atomic_set(&ps->irq_ack, 1); atomic_set(&ps->irq_ack, 1);
/* irq_ack should be set before pending is read. Order accesses with /* irq_ack should be set before pending is read. Order accesses with
@ -226,7 +232,7 @@ static void kvm_pit_ack_irq(struct kvm_irq_ack_notifier *kian)
*/ */
smp_mb(); smp_mb();
if (atomic_dec_if_positive(&ps->pending) > 0) if (atomic_dec_if_positive(&ps->pending) > 0)
queue_kthread_work(&ps->pit->worker, &ps->pit->expired); queue_kthread_work(&pit->worker, &pit->expired);
} }
void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu) void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu)
@ -281,7 +287,7 @@ static void pit_do_work(struct kthread_work *work)
static enum hrtimer_restart pit_timer_fn(struct hrtimer *data) static enum hrtimer_restart pit_timer_fn(struct hrtimer *data)
{ {
struct kvm_kpit_state *ps = container_of(data, struct kvm_kpit_state, timer); struct kvm_kpit_state *ps = container_of(data, struct kvm_kpit_state, timer);
struct kvm_pit *pt = ps->kvm->arch.vpit; struct kvm_pit *pt = pit_state_to_pit(ps);
if (ps->reinject) if (ps->reinject)
atomic_inc(&ps->pending); atomic_inc(&ps->pending);
@ -338,12 +344,11 @@ static void create_pit_timer(struct kvm_pit *pit, u32 val, int is_period)
/* TODO The new value only affected after the retriggered */ /* TODO The new value only affected after the retriggered */
hrtimer_cancel(&ps->timer); hrtimer_cancel(&ps->timer);
flush_kthread_work(&ps->pit->expired); flush_kthread_work(&pit->expired);
ps->period = interval; ps->period = interval;
ps->is_periodic = is_period; ps->is_periodic = is_period;
ps->timer.function = pit_timer_fn; ps->timer.function = pit_timer_fn;
ps->kvm = pit->kvm;
kvm_pit_reset_reinject(pit); kvm_pit_reset_reinject(pit);
@ -696,7 +701,6 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags)
pit->kvm = kvm; pit->kvm = kvm;
pit_state = &pit->pit_state; pit_state = &pit->pit_state;
pit_state->pit = pit;
hrtimer_init(&pit_state->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); hrtimer_init(&pit_state->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
pit_state->irq_ack_notifier.gsi = 0; pit_state->irq_ack_notifier.gsi = 0;

2
arch/x86/kvm/i8254.h
View file

@ -31,8 +31,6 @@ struct kvm_kpit_state {
u32 speaker_data_on; u32 speaker_data_on;
struct mutex lock; struct mutex lock;
struct kvm *kvm;
struct kvm_pit *pit;
bool reinject; bool reinject;
atomic_t pending; /* accumulated triggered timers */ atomic_t pending; /* accumulated triggered timers */
atomic_t irq_ack; atomic_t irq_ack;