virtio-devices: Report events for virtio device activation and reset

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

virtio-devices/src/vhost_user/blk.rs

@@ -272,6 +272,7 @@ impl VirtioDevice for Blk {
         }
         self.common.epoll_threads = Some(epoll_threads);
 
+        event!("virtio-device", "activated", "id", &self.id);
         Ok(())
     }
 
@@ -291,6 +292,8 @@ impl VirtioDevice for Blk {
             let _ = kill_evt.write(1);
         }
 
+        event!("virtio-device", "reset", "id", &self.id);
+
         // Return the interrupt
         Some(self.common.interrupt_cb.take().unwrap())
     }

virtio-devices/src/vhost_user/fs.rs

@@ -492,6 +492,7 @@ impl VirtioDevice for Fs {
 
         self.common.epoll_threads = Some(epoll_threads);
 
+        event!("virtio-device", "activated", "id", &self.id);
         Ok(())
     }
 
@@ -511,6 +512,8 @@ impl VirtioDevice for Fs {
             let _ = kill_evt.write(1);
         }
 
+        event!("virtio-device", "reset", "id", &self.id);
+
         // Return the interrupt
         Some(self.common.interrupt_cb.take().unwrap())
     }

virtio-devices/src/vhost_user/net.rs

@@ -347,6 +347,8 @@ impl VirtioDevice for Net {
             let _ = kill_evt.write(1);
         }
 
+        event!("virtio-device", "reset", "id", &self.id);
+
         // Return the interrupt
         Some(self.common.interrupt_cb.take().unwrap())
     }