KVM: PPC: BookE: Add some more trace points
Without trace points, debugging what exactly is going on inside guest code can be very tricky. Add a few more trace points at places that hopefully tell us more when things go wrong. Signed-off-by: Alexander Graf <agraf@suse.de>
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3 changed files with 77 additions and 0 deletions
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@ -143,6 +143,7 @@ void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
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static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
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unsigned int priority)
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{
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trace_kvm_booke_queue_irqprio(vcpu, priority);
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set_bit(priority, &vcpu->arch.pending_exceptions);
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}
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@ -457,6 +458,8 @@ int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
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static void kvmppc_check_requests(struct kvm_vcpu *vcpu)
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{
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if (vcpu->requests) {
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trace_kvm_check_requests(vcpu);
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if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu))
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update_timer_ints(vcpu);
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#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
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@ -312,6 +312,7 @@ static inline void kvmppc_e500_ref_setup(struct tlbe_ref *ref,
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static inline void kvmppc_e500_ref_release(struct tlbe_ref *ref)
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{
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if (ref->flags & E500_TLB_VALID) {
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trace_kvm_booke206_ref_release(ref->pfn, ref->flags);
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ref->flags = 0;
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}
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}
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@ -1075,6 +1076,8 @@ void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr,
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int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
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{
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trace_kvm_unmap_hva(hva);
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/*
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* Flush all shadow tlb entries everywhere. This is slow, but
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* we are 100% sure that we catch the to be unmapped page
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@ -82,6 +82,21 @@ TRACE_EVENT(kvm_exit,
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)
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);
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TRACE_EVENT(kvm_unmap_hva,
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TP_PROTO(unsigned long hva),
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TP_ARGS(hva),
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TP_STRUCT__entry(
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__field( unsigned long, hva )
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),
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TP_fast_assign(
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__entry->hva = hva;
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),
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TP_printk("unmap hva 0x%lx\n", __entry->hva)
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);
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TRACE_EVENT(kvm_stlb_inval,
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TP_PROTO(unsigned int stlb_index),
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TP_ARGS(stlb_index),
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@ -149,6 +164,24 @@ TRACE_EVENT(kvm_gtlb_write,
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__entry->word1, __entry->word2)
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);
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TRACE_EVENT(kvm_check_requests,
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TP_PROTO(struct kvm_vcpu *vcpu),
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TP_ARGS(vcpu),
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TP_STRUCT__entry(
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__field( __u32, cpu_nr )
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__field( __u32, requests )
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),
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TP_fast_assign(
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__entry->cpu_nr = vcpu->vcpu_id;
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__entry->requests = vcpu->requests;
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),
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TP_printk("vcpu=%x requests=%x",
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__entry->cpu_nr, __entry->requests)
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);
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/*************************************************************************
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* Book3S trace points *
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@ -418,6 +451,44 @@ TRACE_EVENT(kvm_booke206_gtlb_write,
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__entry->mas2, __entry->mas7_3)
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);
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TRACE_EVENT(kvm_booke206_ref_release,
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TP_PROTO(__u64 pfn, __u32 flags),
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TP_ARGS(pfn, flags),
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TP_STRUCT__entry(
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__field( __u64, pfn )
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__field( __u32, flags )
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),
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TP_fast_assign(
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__entry->pfn = pfn;
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__entry->flags = flags;
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),
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TP_printk("pfn=%llx flags=%x",
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__entry->pfn, __entry->flags)
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);
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TRACE_EVENT(kvm_booke_queue_irqprio,
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TP_PROTO(struct kvm_vcpu *vcpu, unsigned int priority),
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TP_ARGS(vcpu, priority),
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TP_STRUCT__entry(
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__field( __u32, cpu_nr )
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__field( __u32, priority )
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__field( unsigned long, pending )
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),
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TP_fast_assign(
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__entry->cpu_nr = vcpu->vcpu_id;
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__entry->priority = priority;
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__entry->pending = vcpu->arch.pending_exceptions;
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),
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TP_printk("vcpu=%x prio=%x pending=%lx",
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__entry->cpu_nr, __entry->priority, __entry->pending)
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);
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#endif
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#endif /* _TRACE_KVM_H */
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