kvm/x86: Hyper-V SynIC tracepoints

Trace the following Hyper SynIC events:
* set msr
* set sint irq
* ack sint
* sint irq eoi

Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2 files changed, 98 insertions, 5 deletions

diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index 101c2e4a0255..2d83d4598507 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -152,7 +152,7 @@ static void kvm_hv_notify_acked_sint(struct kvm_vcpu *vcpu, u32 sint)
         struct kvm_vcpu_hv_stimer *stimer;
         int gsi, idx, stimers_pending;
 
-        vcpu_debug(vcpu, "Hyper-V SynIC acked sint %d\n", sint);
+        trace_kvm_hv_notify_acked_sint(vcpu->vcpu_id, sint);
 
         if (synic->msg_page & HV_SYNIC_SIMP_ENABLE)
                 synic_clear_sint_msg_pending(synic, sint);
@@ -202,8 +202,8 @@ static int synic_set_msr(struct kvm_vcpu_hv_synic *synic,
         if (!synic->active)
                 return 1;
 
-        vcpu_debug(vcpu, "Hyper-V SynIC set msr 0x%x 0x%llx host %d\n",
-                   msr, data, host);
+        trace_kvm_hv_synic_set_msr(vcpu->vcpu_id, msr, data, host);
+
         ret = 0;
         switch (msr) {
         case HV_X64_MSR_SCONTROL:
@@ -312,7 +312,7 @@ int synic_set_irq(struct kvm_vcpu_hv_synic *synic, u32 sint)
         irq.level = 1;
 
         ret = kvm_irq_delivery_to_apic(vcpu->kvm, NULL, &irq, NULL);
-        vcpu_debug(vcpu, "Hyper-V SynIC set irq ret %d\n", ret);
+        trace_kvm_hv_synic_set_irq(vcpu->vcpu_id, sint, irq.vector, ret);
         return ret;
 }
 
@@ -332,7 +332,7 @@ void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector)
         struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);
         int i;
 
-        vcpu_debug(vcpu, "Hyper-V SynIC send eoi vec %d\n", vector);
+        trace_kvm_hv_synic_send_eoi(vcpu->vcpu_id, vector);
 
         for (i = 0; i < ARRAY_SIZE(synic->sint); i++)
                 if (synic_get_sint_vector(synic_read_sint(synic, i)) == vector)
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index ab9ae67a80e4..4be350003bce 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -1025,6 +1025,99 @@ TRACE_EVENT(kvm_pi_irte_update,
                   __entry->pi_desc_addr)
 );
 
+/*
+ * Tracepoint for kvm_hv_notify_acked_sint.
+ */
+TRACE_EVENT(kvm_hv_notify_acked_sint,
+        TP_PROTO(int vcpu_id, u32 sint),
+        TP_ARGS(vcpu_id, sint),
+
+        TP_STRUCT__entry(
+                __field(int, vcpu_id)
+                __field(u32, sint)
+        ),
+
+        TP_fast_assign(
+                __entry->vcpu_id = vcpu_id;
+                __entry->sint = sint;
+        ),
+
+        TP_printk("vcpu_id %d sint %u", __entry->vcpu_id, __entry->sint)
+);
+
+/*
+ * Tracepoint for synic_set_irq.
+ */
+TRACE_EVENT(kvm_hv_synic_set_irq,
+        TP_PROTO(int vcpu_id, u32 sint, int vector, int ret),
+        TP_ARGS(vcpu_id, sint, vector, ret),
+
+        TP_STRUCT__entry(
+                __field(int, vcpu_id)
+                __field(u32, sint)
+                __field(int, vector)
+                __field(int, ret)
+        ),
+
+        TP_fast_assign(
+                __entry->vcpu_id = vcpu_id;
+                __entry->sint = sint;
+                __entry->vector = vector;
+                __entry->ret = ret;
+        ),
+
+        TP_printk("vcpu_id %d sint %u vector %d ret %d",
+                  __entry->vcpu_id, __entry->sint, __entry->vector,
+                  __entry->ret)
+);
+
+/*
+ * Tracepoint for kvm_hv_synic_send_eoi.
+ */
+TRACE_EVENT(kvm_hv_synic_send_eoi,
+        TP_PROTO(int vcpu_id, int vector),
+        TP_ARGS(vcpu_id, vector),
+
+        TP_STRUCT__entry(
+                __field(int, vcpu_id)
+                __field(u32, sint)
+                __field(int, vector)
+                __field(int, ret)
+        ),
+
+        TP_fast_assign(
+                __entry->vcpu_id = vcpu_id;
+                __entry->vector = vector;
+        ),
+
+        TP_printk("vcpu_id %d vector %d", __entry->vcpu_id, __entry->vector)
+);
+
+/*
+ * Tracepoint for synic_set_msr.
+ */
+TRACE_EVENT(kvm_hv_synic_set_msr,
+        TP_PROTO(int vcpu_id, u32 msr, u64 data, bool host),
+        TP_ARGS(vcpu_id, msr, data, host),
+
+        TP_STRUCT__entry(
+                __field(int, vcpu_id)
+                __field(u32, msr)
+                __field(u64, data)
+                __field(bool, host)
+        ),
+
+        TP_fast_assign(
+                __entry->vcpu_id = vcpu_id;
+                __entry->msr = msr;
+                __entry->data = data;
+                __entry->host = host
+        ),
+
+        TP_printk("vcpu_id %d msr 0x%x data 0x%llx host %d",
+                  __entry->vcpu_id, __entry->msr, __entry->data, __entry->host)
+);
+
 #endif /* _TRACE_KVM_H */
 
 #undef TRACE_INCLUDE_PATH