KVM: Trace mmio

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
index 035232dc84e0..77022af48492 100644
--- a/include/trace/events/kvm.h
+++ b/include/trace/events/kvm.h
@@ -56,6 +56,39 @@ TRACE_EVENT(kvm_ack_irq,
 
 
 #endif /* defined(__KVM_HAVE_IOAPIC) */
+
+#define KVM_TRACE_MMIO_READ_UNSATISFIED 0
+#define KVM_TRACE_MMIO_READ 1
+#define KVM_TRACE_MMIO_WRITE 2
+
+#define kvm_trace_symbol_mmio \
+        { KVM_TRACE_MMIO_READ_UNSATISFIED, "unsatisfied-read" }, \
+        { KVM_TRACE_MMIO_READ, "read" }, \
+        { KVM_TRACE_MMIO_WRITE, "write" }
+
+TRACE_EVENT(kvm_mmio,
+        TP_PROTO(int type, int len, u64 gpa, u64 val),
+        TP_ARGS(type, len, gpa, val),
+
+        TP_STRUCT__entry(
+                __field(        u32,    type            )
+                __field(        u32,    len             )
+                __field(        u64,    gpa             )
+                __field(        u64,    val             )
+        ),
+
+        TP_fast_assign(
+                __entry->type           = type;
+                __entry->len            = len;
+                __entry->gpa            = gpa;
+                __entry->val            = val;
+        ),
+
+        TP_printk("mmio %s len %u gpa 0x%llx val 0x%llx",
+                  __print_symbolic(__entry->type, kvm_trace_symbol_mmio),
+                  __entry->len, __entry->gpa, __entry->val)
+);
+
 #endif /* _TRACE_KVM_MAIN_H */
 
 /* This part must be outside protection */