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| author | Amit Shah <amit.shah@redhat.com> | 2011-07-05 16:36:39 +0530 |
|---|---|---|
| committer | Amit Shah <amit.shah@redhat.com> | 2011-07-18 15:30:14 +0530 |
| commit | 49e3fdd7f2f3ecccc6f75d976246124d0edaec3f (patch) | |
| tree | 3a495cad961e3e93227a76d3ba38f117d56644fd | |
| parent | 89b9ba661bd2d6155308f895ec075d813f0e129b (diff) | |
| download | qemu-49e3fdd7f2f3ecccc6f75d976246124d0edaec3f.zip qemu-49e3fdd7f2f3ecccc6f75d976246124d0edaec3f.tar.gz qemu-49e3fdd7f2f3ecccc6f75d976246124d0edaec3f.tar.bz2 | |
virtio-serial-bus: Add trace events
Add some trace events for messages passed between the guest and host.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
| -rw-r--r-- | hw/virtio-serial-bus.c | 7 | ||||
| -rw-r--r-- | 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 bebf612f..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" |