[PATCH 1/2] KVM: x86: Introudce trace_kvm_vmx_debug()

[Yao Yuan]

debug only common trace.

Signed-off-by: Yao Yuan <yuan.yao@xxxxxxxxx>
---
 arch/x86/kvm/trace.h | 28 ++++++++++++++++++++++++++++
 arch/x86/kvm/x86.c   |  1 +
 2 files changed, 29 insertions(+)

diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index d3aeffd6ae75..7b9eb23d71d3 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -34,6 +34,34 @@ TRACE_EVENT(kvm_entry,
 		  __entry->immediate_exit ? "[immediate exit]" : "")
 );

+TRACE_EVENT(kvm_vmx_debug,
+	    TP_PROTO(unsigned long n, unsigned long a0,
+		     unsigned long a1,
+		     unsigned long a2,
+		     unsigned long a3),
+	    TP_ARGS(n, a0, a1, a2, a3),
+
+	TP_STRUCT__entry(
+		 __field(	unsigned long,	n		)
+		__field(	unsigned long,	a0		)
+		__field(	unsigned long,	a1		)
+		__field(	unsigned long,	a2		)
+		__field(	unsigned long,	a3		)
+	),
+
+	TP_fast_assign(
+		__entry->n      = n;
+		__entry->a0		= a0;
+		__entry->a1		= a1;
+		__entry->a2		= a2;
+		__entry->a3		= a3;
+	),
+
+	TP_printk("kvm_vmx_debug: %ld, a0:0x%lx a1:0x%lx a2:0x%lx a3:0x%lx",
+		  __entry->n, __entry->a0, __entry->a1, __entry->a2, __entry->a3)
+);
+
+
 /*
  * Tracepoint for hypercall.
  */
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 994743266480..6d1972d6c988 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -14036,6 +14036,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_exit);
 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_msr_protocol_enter);
 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_msr_protocol_exit);
 EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_rmp_fault);
+EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmx_debug);

 static int __init kvm_x86_init(void)
 {
--
2.27.0

Patch 02: