diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2022-05-19 05:27:08 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-06-24 12:52:45 -0400 |
| commit | 39b6b8c35cf37970e07e9081c0e7d1083930b2f7 (patch) | |
| tree | fdaa7be59d1af9cee3e3b1e005ef8c5d9689a17f /arch | |
| parent | 8c9e639da435874fb845c4d296ce55664071ea7a (diff) | |
| download | linux-39b6b8c35cf37970e07e9081c0e7d1083930b2f7.tar.gz | |
KVM: SVM: Add AVIC doorbell tracepoint
Add a tracepoint to track number of doorbells being sent
to signal a running vCPU to process IRQ after being injected.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Message-Id: <20220519102709.24125-17-suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/svm/avic.c | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/trace.h | 18 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 1 |
3 files changed, 22 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c index 229de5fe665d..f18c852b6900 100644 --- a/arch/x86/kvm/svm/avic.c +++ b/arch/x86/kvm/svm/avic.c @@ -324,8 +324,10 @@ void avic_ring_doorbell(struct kvm_vcpu *vcpu) */ int cpu = READ_ONCE(vcpu->cpu); - if (cpu != get_cpu()) + if (cpu != get_cpu()) { wrmsrl(MSR_AMD64_SVM_AVIC_DOORBELL, kvm_cpu_get_apicid(cpu)); + trace_kvm_avic_doorbell(vcpu->vcpu_id, kvm_cpu_get_apicid(cpu)); + } put_cpu(); } diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index fd28dd40b813..bc85622e28b2 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -1490,6 +1490,24 @@ TRACE_EVENT(kvm_avic_kick_vcpu_slowpath, __entry->icrh, __entry->icrl, __entry->index) ); +TRACE_EVENT(kvm_avic_doorbell, + TP_PROTO(u32 vcpuid, u32 apicid), + TP_ARGS(vcpuid, apicid), + + TP_STRUCT__entry( + __field(u32, vcpuid) + __field(u32, apicid) + ), + + TP_fast_assign( + __entry->vcpuid = vcpuid; + __entry->apicid = apicid; + ), + + TP_printk("vcpuid=%u, apicid=%u", + __entry->vcpuid, __entry->apicid) +); + TRACE_EVENT(kvm_hv_timer_state, TP_PROTO(unsigned int vcpu_id, unsigned int hv_timer_in_use), TP_ARGS(vcpu_id, hv_timer_in_use), diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index acd7ce1dcb9f..d88600e41ff8 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -13328,6 +13328,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_unaccelerated_access); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_incomplete_ipi); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_ga_log); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_kick_vcpu_slowpath); +EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_doorbell); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_apicv_accept_irq); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_enter); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_exit); |