From 7caa5d818e0fa0e1cee2513f2fde4e81f8b5cc13 Mon Sep 17 00:00:00 2001
From: zhengchuan <zhengchuan@huawei.com>
Date: Mon, 5 Dec 2022 20:52:25 +0800
Subject: [PATCH] migration: report migration related thread pid to libvirt

in order to control migration thread cgroup,
we need to report migration related thread pid to libvirt

Signed-off-by:zhengchuan<zhengchuan@huawei.com>
---
 migration/migration.c |  3 +++
 qapi/migration.json   | 12 ++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/migration/migration.c b/migration/migration.c
index 3ce04b2aaf..7c2fdde26b 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -3299,6 +3299,9 @@ static void *migration_thread(void *opaque)
     MigThrError thr_error;
     bool urgent = false;
 
+    /* report migration thread pid to libvirt */
+    qapi_event_send_migration_pid(qemu_get_thread_id());
+
     thread = migration_threads_add("live_migration", qemu_get_thread_id());
 
     rcu_register_thread();
diff --git a/qapi/migration.json b/qapi/migration.json
index 29af841f4e..b442d0d878 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1447,6 +1447,18 @@
 { 'event': 'MIGRATION_PASS',
   'data': { 'pass': 'int' } }
 
+##
+# @MIGRATION_PID:
+#
+# Emitted when migration thread appear
+#
+# @pid: pid of migration thread
+#
+# Since: EulerOS Virtual
+##
+{ 'event': 'MIGRATION_PID',
+  'data': { 'pid': 'int' } }
+
 ##
 # @COLOMessage:
 #
-- 
2.27.0