[Qemu-devel] [RFC v2 04/33] migration: dump str in migrate_set_state trace

[Peter Xu <peterx@redhat.com>]

Strings are more readable for debugging.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/migration.c  | 3 ++-
 migration/trace-events | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/migration/migration.c b/migration/migration.c
index eb7d767..c818412 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -914,8 +914,9 @@ void qmp_migrate_start_postcopy(Error **errp)
 
 void migrate_set_state(int *state, int old_state, int new_state)
 {
+    assert(new_state < MIGRATION_STATUS__MAX);
     if (atomic_cmpxchg(state, old_state, new_state) == old_state) {
-        trace_migrate_set_state(new_state);
+        trace_migrate_set_state(MigrationStatus_lookup[new_state]);
         migrate_generate_event(new_state);
     }
 }
diff --git a/migration/trace-events b/migration/trace-events
index 7a3b514..d2910a6 100644
--- a/migration/trace-events
+++ b/migration/trace-events
@@ -80,7 +80,7 @@ ram_save_queue_pages(const char *rbname, size_t start, size_t len) "%s: start: 0
 # migration/migration.c
 await_return_path_close_on_source_close(void) ""
 await_return_path_close_on_source_joining(void) ""
-migrate_set_state(int new_state) "new state %d"
+migrate_set_state(const char *new_state) "new state %s"
 migrate_fd_cleanup(void) ""
 migrate_fd_error(const char *error_desc) "error=%s"
 migrate_fd_cancel(void) ""
-- 
2.7.4