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[Qemu-devel] [PATCH uq/master v2 1/2] kvm-all: add kvm_ioctl, kvm_vm_ioc
From: |
Kazuya Saito |
Subject: |
[Qemu-devel] [PATCH uq/master v2 1/2] kvm-all: add kvm_ioctl, kvm_vm_ioctl, kvm_vcpu_ioctl tracepoints |
Date: |
Fri, 29 Mar 2013 13:27:05 +0900 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130307 Thunderbird/17.0.4 |
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 <address@hidden>
---
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 9b433d3..fdb099c 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
@@ -1634,6 +1635,7 @@ int kvm_ioctl(KVMState *s, int type, ...)
arg = va_arg(ap, void *);
va_end(ap);
+ trace_kvm_ioctl(type, arg);
ret = ioctl(s->fd, type, arg);
if (ret == -1) {
ret = -errno;
@@ -1651,6 +1653,7 @@ int kvm_vm_ioctl(KVMState *s, int type, ...)
arg = va_arg(ap, void *);
va_end(ap);
+ trace_kvm_vm_ioctl(type, arg);
ret = ioctl(s->vmfd, type, arg);
if (ret == -1) {
ret = -errno;
@@ -1668,6 +1671,7 @@ int kvm_vcpu_ioctl(CPUState *cpu, int type, ...)
arg = va_arg(ap, void *);
va_end(ap);
+ trace_kvm_vcpu_ioctl(cpu->cpu_index, type, arg);
ret = ioctl(cpu->kvm_fd, type, arg);
if (ret == -1) {
ret = -errno;
diff --git a/trace-events b/trace-events
index 7f34112..3023744 100644
--- a/trace-events
+++ b/trace-events
@@ -1101,3 +1101,8 @@ 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, void *arg) "type %d, arg %p"
+kvm_vm_ioctl(int type, void *arg) "type %d, arg %p"
+kvm_vcpu_ioctl(int cpu_index, int type, void *arg) "cpu_index %d, type %d, arg
%p"
--
1.7.1