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[Qemu-devel] [PATCH 1/2] virtio-serial-bus: Add trace events
From: |
Amit Shah |
Subject: |
[Qemu-devel] [PATCH 1/2] virtio-serial-bus: Add trace events |
Date: |
Tue, 5 Jul 2011 16:50:08 +0530 |
Add some trace events for messages passed between the guest and host.
Signed-off-by: Amit Shah <address@hidden>
---
hw/virtio-serial-bus.c | 7 +++++++
trace-events | 6 ++++++
2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 7f6db7b..9859f9f 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -19,6 +19,7 @@
#include "monitor.h"
#include "qemu-queue.h"
#include "sysbus.h"
+#include "trace.h"
#include "virtio-serial.h"
/* The virtio-serial bus on top of which the ports will ride as devices */
@@ -221,6 +222,7 @@ static size_t send_control_event(VirtIOSerialPort *port,
uint16_t event,
stw_p(&cpkt.event, event);
stw_p(&cpkt.value, value);
+ trace_virtio_serial_send_control_event(port->id, event, value);
return send_control_msg(port, &cpkt, sizeof(cpkt));
}
@@ -302,6 +304,7 @@ void virtio_serial_throttle_port(VirtIOSerialPort *port,
bool throttle)
return;
}
+ trace_virtio_serial_throttle_port(port->id, throttle);
port->throttled = throttle;
if (throttle) {
return;
@@ -328,6 +331,8 @@ static void handle_control_message(VirtIOSerial *vser, void
*buf, size_t len)
cpkt.event = lduw_p(&gcpkt->event);
cpkt.value = lduw_p(&gcpkt->value);
+ trace_virtio_serial_handle_control_message(cpkt.event, cpkt.value);
+
if (cpkt.event == VIRTIO_CONSOLE_DEVICE_READY) {
if (!cpkt.value) {
error_report("virtio-serial-bus: Guest failure in adding device
%s",
@@ -351,6 +356,8 @@ static void handle_control_message(VirtIOSerial *vser, void
*buf, size_t len)
return;
}
+ trace_virtio_serial_handle_control_message_port(port->id);
+
info = DO_UPCAST(VirtIOSerialPortInfo, qdev, port->dev.info);
switch(cpkt.event) {
diff --git a/trace-events b/trace-events
index bebf612..59420e8 100644
--- a/trace-events
+++ b/trace-events
@@ -46,6 +46,12 @@ disable virtio_queue_notify(void *vdev, int n, void *vq)
"vdev %p n %d vq %p"
disable virtio_irq(void *vq) "vq %p"
disable virtio_notify(void *vdev, void *vq) "vdev %p vq %p"
+# hw/virtio-serial-bus.c
+disable virtio_serial_send_control_event(unsigned int port, uint16_t event,
uint16_t value) "port %u, event %u, value %u"
+disable virtio_serial_throttle_port(unsigned int port, bool throttle) "port
%u, throttle %d"
+disable virtio_serial_handle_control_message(uint16_t event, uint16_t value)
"event %u, value %u"
+disable virtio_serial_handle_control_message_port(unsigned int port) "port %u"
+
# block.c
disable multiwrite_cb(void *mcb, int ret) "mcb %p ret %d"
disable bdrv_aio_multiwrite(void *mcb, int num_callbacks, int num_reqs) "mcb
%p num_callbacks %d num_reqs %d"
--
1.7.5.4
- [Qemu-devel] [PATCH 1/2] virtio-serial-bus: Add trace events,
Amit Shah <=