[PATCH 1/3] migration: report migration thread name to libvirt

[Jiang Jiacheng]

Report migration thread name to libvirt in order to
support query migration thread infomation by its name.

Signed-off-by: Jiang Jiacheng <jiangjiacheng@huawei.com>
---
 migration/migration.c |  3 +++
 migration/multifd.c   |  5 ++++-
 qapi/migration.json   | 12 ++++++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/migration/migration.c b/migration/migration.c
index 52b5d39244..b4ce458bb9 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -3955,6 +3955,9 @@ static void *migration_thread(void *opaque)
     MigThrError thr_error;
     bool urgent = false;
 
+    /* report migration thread name to libvirt */
+    qapi_event_send_migration_name("live_migration");
+
     rcu_register_thread();
 
     object_ref(OBJECT(s));
diff --git a/migration/multifd.c b/migration/multifd.c
index 000ca4d4ec..6e834c7111 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -17,6 +17,7 @@
 #include "exec/ramblock.h"
 #include "qemu/error-report.h"
 #include "qapi/error.h"
+#include "qapi/qapi-events-migration.h"
 #include "ram.h"
 #include "migration.h"
 #include "socket.h"
@@ -24,7 +25,6 @@
 #include "qemu-file.h"
 #include "trace.h"
 #include "multifd.h"
-
 #include "qemu/yank.h"
 #include "io/channel-socket.h"
 #include "yank_functions.h"
@@ -650,6 +650,9 @@ static void *multifd_send_thread(void *opaque)
     int ret = 0;
     bool use_zero_copy_send = migrate_use_zero_copy_send();
 
+    /* report multifd thread name to libvirt */
+    qapi_event_send_migration_name(p->name);
+
     trace_multifd_send_thread_start(p->id);
     rcu_register_thread();
 
diff --git a/qapi/migration.json b/qapi/migration.json
index 88ecf86ac8..b0cf366ac0 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1286,6 +1286,18 @@
 { 'event': 'MIGRATION_PASS',
   'data': { 'pass': 'int' } }
 
+##
+# @MIGRATION_NAME:
+#
+# Emitted when migration thread appear
+#
+# @name: name of migration thread
+#
+# Since: 7.2
+##
+{ 'event': 'MIGRATION_NAME',
+  'data': { 'name': 'str' } }
+
 ##
 # @COLOMessage:
 #
-- 
2.33.0