This patch adds tracepoints at ioctl to kvm. Tracing these ioctl is
useful for clarification whether the cause of troubles is qemu or kvm.
Signed-off-by: Kazuya Saito <saito.kaz...@jp.fujitsu.com>
---
kvm-all.c | 4 ++++
trace-events | 5 +++++
2 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 4decfdc..da15623 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -33,6 +33,7 @@
#include "exec/memory.h"
#include "exec/address-spaces.h"
#include "qemu/event_notifier.h"
+#include "trace.h"
/* This check must be after config-host.h is included */
#ifdef CONFIG_EVENTFD
@@ -1636,6 +1637,7 @@ int kvm_ioctl(KVMState *s, int type, ...)
arg = va_arg(ap, void *);
va_end(ap);
+ trace_kvm_ioctl(type);
ret = ioctl(s->fd, type, arg);
if (ret == -1) {
ret = -errno;
@@ -1653,6 +1655,7 @@ int kvm_vm_ioctl(KVMState *s, int type, ...)
arg = va_arg(ap, void *);
va_end(ap);
+ trace_kvm_vm_ioctl(type);
ret = ioctl(s->vmfd, type, arg);
if (ret == -1) {
ret = -errno;
@@ -1670,6 +1673,7 @@ int kvm_vcpu_ioctl(CPUState *cpu, int type, ...)
arg = va_arg(ap, void *);
va_end(ap);
+ trace_kvm_vcpu_ioctl(type);
ret = ioctl(cpu->kvm_fd, type, arg);
if (ret == -1) {
ret = -errno;
diff --git a/trace-events b/trace-events
index 1e352a7..1af7060 100644
--- a/trace-events
+++ b/trace-events
@@ -1096,3 +1096,8 @@ virtio_ccw_new_device(int cssid, int ssid, int schid, int
devno, const char *dev
# migration.c
migrate_set_state(int new_state) "new state %d"
+
+# kvm-all.c
+kvm_ioctl(int type) "type %d"
+kvm_vm_ioctl(int type) "type %d"
+kvm_vcpu_ioctl(int type) "type %d"
--
1.7.1
