[Qemu-devel] [PATCH 1/5] vl: add runstate_set tracepoint

[Kazuya Saito <saito.kazuya@jp.fujitsu.com>]

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>
---
 trace-events |    1 +
 vl.c         |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/trace-events b/trace-events
index d6a847d..1e352a7 100644
--- a/trace-events
+++ b/trace-events
@@ -474,6 +474,7 @@ scsi_request_sense(int target, int lun, int tag) "target %d lun %d tag %d"
 # vl.c
 vm_state_notify(int running, int reason) "running %d reason %d"
 load_file(const char *name, const char *path) "name %s location %s"
+runstate_set(int new_state) "new state %d"

 # block/qcow2.c
 qcow2_writev_start_req(void *co, int64_t sector, int nb_sectors) "co %p sector %" PRIx64 " nb_sectors %d"
diff --git a/vl.c b/vl.c
index a621aec..4bd3671 100644
--- a/vl.c
+++ b/vl.c
@@ -638,7 +638,7 @@ void runstate_set(RunState new_state)
                 RunState_lookup[new_state]);
         abort();
     }
-
+    trace_runstate_set(new_state);
     current_run_state = new_state;
 }

-- 
1.7.1