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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2022-04-20 18:49:54 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-04-29 19:50:00 +0300 |
| commit | 9f084f7c2ed7e6b8cc3176b9ece2f6cb0641c385 (patch) | |
| tree | 130ad8349bc5454b75b4eb0e5159cf85b581cb42 /arch/x86/kvm/svm/avic.c | |
| parent | 7223fd2d5338d5eeef1775abd3440f8b499f3c0a (diff) | |
| download | linux-9f084f7c2ed7e6b8cc3176b9ece2f6cb0641c385.tar.xz | |
KVM: SVM: Introduce trace point for the slow-path of avic_kic_target_vcpus
This can help identify potential performance issues when handles
AVIC incomplete IPI due vCPU not running.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220420154954.19305-3-suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/avic.c')
| -rw-r--r-- | arch/x86/kvm/svm/avic.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c index 7249d766519f..54fe03714f8a 100644 --- a/arch/x86/kvm/svm/avic.c +++ b/arch/x86/kvm/svm/avic.c @@ -354,6 +354,8 @@ static void avic_kick_target_vcpus(struct kvm *kvm, struct kvm_lapic *source, if (!avic_kick_target_vcpus_fast(kvm, source, icrl, icrh, index)) return; + trace_kvm_avic_kick_vcpu_slowpath(icrh, icrl, index); + /* * Wake any target vCPUs that are blocking, i.e. waiting for a wake * event. There's no need to signal doorbells, as hardware has handled |