From 2ed152afc7ed61830b848b32936e1541a1a57799 Mon Sep 17 00:00:00 2001
From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Date: Wed, 10 Mar 2010 19:00:43 +0800
Subject: [PATCH] KVM: cleanup kvm trace

This patch does:

 - no need call tracepoint_synchronize_unregister() when kvm module
   is unloaded since ftrace can handle it

 - cleanup ftrace's macro

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
 arch/x86/kvm/mmu.c         | 1 -
 arch/x86/kvm/mmutrace.h    | 7 +++++--
 arch/x86/kvm/trace.h       | 7 +++++--
 arch/x86/kvm/x86.c         | 2 +-
 include/trace/events/kvm.h | 1 -
 virt/kvm/kvm_main.c        | 1 -
 6 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 19a8906bcaa2..3af2dfd8778e 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -148,7 +148,6 @@ module_param(oos_shadow, bool, 0644);
 
 #include <trace/events/kvm.h>
 
-#undef TRACE_INCLUDE_FILE
 #define CREATE_TRACE_POINTS
 #include "mmutrace.h"
 
diff --git a/arch/x86/kvm/mmutrace.h b/arch/x86/kvm/mmutrace.h
index 3e4a5c6ca2a9..1fe956ab7617 100644
--- a/arch/x86/kvm/mmutrace.h
+++ b/arch/x86/kvm/mmutrace.h
@@ -6,8 +6,6 @@
 
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM kvmmmu
-#define TRACE_INCLUDE_PATH .
-#define TRACE_INCLUDE_FILE mmutrace
 
 #define KVM_MMU_PAGE_FIELDS \
 	__field(__u64, gfn) \
@@ -216,5 +214,10 @@ TRACE_EVENT(
 
 #endif /* _TRACE_KVMMMU_H */
 
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE mmutrace
+
 /* This part must be outside protection */
 #include <trace/define_trace.h>
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 17b52ccd9774..b75efef79e56 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -5,8 +5,6 @@
 
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM kvm
-#define TRACE_INCLUDE_PATH arch/x86/kvm
-#define TRACE_INCLUDE_FILE trace
 
 /*
  * Tracepoint for guest mode entry.
@@ -575,5 +573,10 @@ TRACE_EVENT(kvm_skinit,
 
 #endif /* _TRACE_KVM_H */
 
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH arch/x86/kvm
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+
 /* This part must be outside protection */
 #include <trace/define_trace.h>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2b34dc705cfb..74e70d975ffa 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -41,7 +41,7 @@
 #include <linux/srcu.h>
 #include <linux/slab.h>
 #include <trace/events/kvm.h>
-#undef TRACE_INCLUDE_FILE
+
 #define CREATE_TRACE_POINTS
 #include "trace.h"
 
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
index b17d49dfc3ef..6dd3a51ab1cb 100644
--- a/include/trace/events/kvm.h
+++ b/include/trace/events/kvm.h
@@ -5,7 +5,6 @@
 
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM kvm
-#define TRACE_INCLUDE_FILE kvm
 
 #if defined(__KVM_HAVE_IOAPIC)
 TRACE_EVENT(kvm_set_irq,
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 5bac6eb0f0a9..b152b23cd095 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2279,7 +2279,6 @@ EXPORT_SYMBOL_GPL(kvm_init);
 
 void kvm_exit(void)
 {
-	tracepoint_synchronize_unregister();
 	kvm_exit_debug();
 	misc_deregister(&kvm_dev);
 	kmem_cache_destroy(kvm_vcpu_cache);
-- 
GitLab