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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2020-03-12 05:39:28 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-16 17:58:56 +0100 |
| commit | ab56f8e62dafe4c9bec9fc236937c9884bd9966d (patch) | |
| tree | f53ecb06f2b89df2f127028342ff2abbd3250b1f /arch/x86/kvm/svm.c | |
| parent | 3ac40c404c60f20dd07920810b1195125f193e1e (diff) | |
| download | linux-ab56f8e62dafe4c9bec9fc236937c9884bd9966d.tar.bz2 | |
kvm: svm: Introduce GA Log tracepoint for AVIC
GA Log tracepoint is useful when debugging AVIC performance
issue as it can be used with perf to count the number of times
IOMMU AVIC injects interrupts through the slow-path instead of
directly inject interrupts to the target vcpu.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index c923ad1d7321..7c9ddd680f22 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1232,6 +1232,7 @@ static int avic_ga_log_notifier(u32 ga_tag) u32 vcpu_id = AVIC_GATAG_TO_VCPUID(ga_tag); pr_debug("SVM: %s: vm_id=%#x, vcpu_id=%#x\n", __func__, vm_id, vcpu_id); + trace_kvm_avic_ga_log(vm_id, vcpu_id); spin_lock_irqsave(&svm_vm_data_hash_lock, flags); hash_for_each_possible(svm_vm_data_hash, kvm_svm, hnode, vm_id) { |