vl: add runstate_set tracepoint

This patch enables us to know RunState transition. It will be userful
for investigation when the trouble occured in special event such like
live migration, shutdown, suspend, and so on.

Signed-off-by: Kazuya Saito <saito.kazuya@jp.fujitsu.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/vl.c b/vl.c
index 7643f16351..770cb7fabb 100644
--- a/vl.c
+++ b/vl.c
@@ -642,7 +642,7 @@ void runstate_set(RunState new_state)
                 RunState_lookup[new_state]);
         abort();
     }
-
+    trace_runstate_set(new_state);
     current_run_state = new_state;
 }