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hw/virtio: add some vhost-user trace events 

These are useful for tracing the lifetime of vhost-user connections.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220802095010.3330793-10-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Alex Bennée 2022-08-02 10:49:57 +01:00 committed by Michael S. Tsirkin
parent 8d11c10d06
commit a276123119
2 changed files with 10 additions and 0 deletions
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4
hw/virtio/trace-events
View File

@ -8,6 +8,10 @@ vhost_region_add_section_aligned(const char *name, uint64_t gpa, uint64_t size,
vhost_section(const char *name) "%s"
vhost_reject_section(const char *name, int d) "%s:%d"
vhost_iotlb_miss(void *dev, int step) "%p step %d"
vhost_dev_cleanup(void *dev) "%p"
vhost_dev_start(void *dev, const char *name) "%p:%s"
vhost_dev_stop(void *dev, const char *name) "%p:%s"
# vhost-user.c
vhost_user_postcopy_end_entry(void) ""

6
hw/virtio/vhost.c
View File

@ -1477,6 +1477,8 @@ void vhost_dev_cleanup(struct vhost_dev *hdev)
{
int i;
trace_vhost_dev_cleanup(hdev);
for (i = 0; i < hdev->nvqs; ++i) {
vhost_virtqueue_cleanup(hdev->vqs + i);
}
@ -1783,6 +1785,8 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev)
/* should only be called after backend is connected */
assert(hdev->vhost_ops);
trace_vhost_dev_start(hdev, vdev->name);
vdev->vhost_started = true;
hdev->started = true;
hdev->vdev = vdev;
@ -1869,6 +1873,8 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev)
/* should only be called after backend is connected */
assert(hdev->vhost_ops);
trace_vhost_dev_stop(hdev, vdev->name);
if (hdev->vhost_ops->vhost_dev_start) {
hdev->vhost_ops->vhost_dev_start(hdev, false);
}