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KVM: fix tracing kvm_try_async_get_page
Tracing 'async' and *pfn is useless, since 'async' is always true, and '*pfn' is always "fault_pfn' We can trace 'gva' and 'gfn' instead, it can help us to see the life-cycle of an async_pf Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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@ -2628,7 +2628,7 @@ static bool try_async_pf(struct kvm_vcpu *vcpu, bool no_apf, gfn_t gfn,
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put_page(pfn_to_page(*pfn));
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put_page(pfn_to_page(*pfn));
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if (!no_apf && can_do_async_pf(vcpu)) {
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if (!no_apf && can_do_async_pf(vcpu)) {
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trace_kvm_try_async_get_page(async, *pfn);
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trace_kvm_try_async_get_page(gva, gfn);
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if (kvm_find_async_pf_gfn(vcpu, gfn)) {
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if (kvm_find_async_pf_gfn(vcpu, gfn)) {
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trace_kvm_async_pf_doublefault(gva, gfn);
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trace_kvm_async_pf_doublefault(gva, gfn);
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kvm_make_request(KVM_REQ_APF_HALT, vcpu);
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kvm_make_request(KVM_REQ_APF_HALT, vcpu);
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@ -218,18 +218,20 @@ TRACE_EVENT(kvm_age_page,
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#ifdef CONFIG_KVM_ASYNC_PF
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#ifdef CONFIG_KVM_ASYNC_PF
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TRACE_EVENT(
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TRACE_EVENT(
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kvm_try_async_get_page,
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kvm_try_async_get_page,
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TP_PROTO(bool async, u64 pfn),
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TP_PROTO(u64 gva, u64 gfn),
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TP_ARGS(async, pfn),
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TP_ARGS(gva, gfn),
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TP_STRUCT__entry(
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TP_STRUCT__entry(
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__field(__u64, pfn)
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__field(u64, gva)
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__field(u64, gfn)
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),
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),
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TP_fast_assign(
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TP_fast_assign(
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__entry->pfn = (!async) ? pfn : (u64)-1;
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__entry->gva = gva;
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__entry->gfn = gfn;
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),
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),
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TP_printk("pfn %#llx", __entry->pfn)
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TP_printk("gva = %#llx, gfn = %#llx", __entry->gva, __entry->gfn)
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);
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);
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TRACE_EVENT(
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TRACE_EVENT(
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