[PATCH 08/13] src/qemu/qemu_driver.c: Init ftrace backend in qemu driver so that qemu driver can support ftrace

["yangzy.fnst@xxxxxxxxxxxxxx" <yangzy.fnst@xxxxxxxxxxxxxx>]

From: Xinghai Yu <yuxinghai@xxxxxxxxxxxxxx>

Signed-off-by: Xinghai Yu <yuxinghai@xxxxxxxxxxxxxx>
---
 src/qemu/qemu_driver.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 9aad2dc..6c5299f 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -96,6 +96,10 @@
 #include "viraccessapicheckqemu.h"
 #include "storage/storage_driver.h"
 
+#ifdef WITH_FTRACE_PROBES
+# include "ftrace.h"
+#endif
+
 #define VIR_FROM_THIS VIR_FROM_QEMU
 
 #define QEMU_NB_MEM_PARAM  3
@@ -843,6 +847,12 @@ qemuStateInitialize(bool privileged,
     virObjectUnref(conn);
 
     virNWFilterRegisterCallbackDriver(&qemuCallbackDriver);
+
+#ifdef WITH_FTRACE_PROBES
+    if(!trace_backend_init())
+        goto error;
+#endif
+
     return 0;
 
 error:
-- 
1.8.3.1

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