From: Jiang Jiacheng <jiangjiach...@huawei.com>
Introduce interface query-migrationthreads. The interface is used
to query information about migration threads and returns with
migration thread's name and its id.
Introduce threadinfo.c to manage threads with migration.
Signed-off-by: Jiang Jiacheng <jiangjiach...@huawei.com>
Reviewed-by: Juan Quintela <quint...@redhat.com>
Signed-off-by: Juan Quintela <quint...@redhat.com>
---
qapi/migration.json | 29 ++++++++++++++++++++++++
migration/threadinfo.h | 28 +++++++++++++++++++++++
migration/threadinfo.c | 51 ++++++++++++++++++++++++++++++++++++++++++
migration/meson.build | 1 +
4 files changed, 109 insertions(+)
create mode 100644 migration/threadinfo.h
create mode 100644 migration/threadinfo.c
diff --git a/qapi/migration.json b/qapi/migration.json
index 88ecf86ac8..c84fa10e86 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1958,6 +1958,35 @@
{ 'command': 'query-vcpu-dirty-limit',
'returns': [ 'DirtyLimitInfo' ] }
+##
+# @MigrationThreadInfo:
+#
+# Information about migrationthreads
+#
+# @name: the name of migration thread
+#
+# @thread-id: ID of the underlying host thread
+#
+# Since: 7.2
+##
+{ 'struct': 'MigrationThreadInfo',
+ 'data': {'name': 'str',
+ 'thread-id': 'int'} }
+
+##
+# @query-migrationthreads:
+#
+# Returns information of migration threads
+#
+# data: migration thread name
+#
+# returns: information about migration threads
+#
+# Since: 7.2
+##
+{ 'command': 'query-migrationthreads',
+ 'returns': ['MigrationThreadInfo'] }
+
##
# @snapshot-save:
#
diff --git a/migration/threadinfo.h b/migration/threadinfo.h
new file mode 100644
index 0000000000..4d69423c0a
--- /dev/null
+++ b/migration/threadinfo.h
@@ -0,0 +1,28 @@
+/*
+ * Migration Threads info
+ *
+ * Copyright (c) 2022 HUAWEI TECHNOLOGIES CO., LTD.
+ *
+ * Authors:
+ * Jiang Jiacheng <jiangjiach...@huawei.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/queue.h"
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-migration.h"
+
+typedef struct MigrationThread MigrationThread;
+
+struct MigrationThread {
+ const char *name; /* the name of migration thread */
+ int thread_id; /* ID of the underlying host thread */
+ QLIST_ENTRY(MigrationThread) node;
+};
+
+MigrationThread *MigrationThreadAdd(const char *name, int thread_id);
+
+void MigrationThreadDel(MigrationThread *info);
diff --git a/migration/threadinfo.c b/migration/threadinfo.c
new file mode 100644
index 0000000000..1de8b31855
--- /dev/null
+++ b/migration/threadinfo.c
@@ -0,0 +1,51 @@
+/*
+ * Migration Threads info
+ *
+ * Copyright (c) 2022 HUAWEI TECHNOLOGIES CO., LTD.
+ *
+ * Authors:
+ * Jiang Jiacheng <jiangjiach...@huawei.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "threadinfo.h"
+
+static QLIST_HEAD(, MigrationThread) migration_threads;
+
+MigrationThread *MigrationThreadAdd(const char *name, int thread_id)
+{
+ MigrationThread *thread = g_new0(MigrationThread, 1);
+ thread->name = name;
+ thread->thread_id = thread_id;
+
+ QLIST_INSERT_HEAD(&migration_threads, thread, node);
+
+ return thread;
+}
+
+void MigrationThreadDel(MigrationThread *thread)
+{
+ if (thread) {
+ QLIST_REMOVE(thread, node);
+ g_free(thread);
+ }
+}
+
+MigrationThreadInfoList *qmp_query_migrationthreads(Error **errp)
+{
+ MigrationThreadInfoList *head = NULL;
+ MigrationThreadInfoList **tail = &head;
+ MigrationThread *thread = NULL;
+
+ QLIST_FOREACH(thread, &migration_threads, node) {
+ MigrationThreadInfo *info = g_new0(MigrationThreadInfo, 1);
+ info->name = g_strdup(thread->name);
+ info->thread_id = thread->thread_id;
+
+ QAPI_LIST_APPEND(tail, info);
+ }
+
+ return head;
+}
diff --git a/migration/meson.build b/migration/meson.build
index a9e7e18793..0d1bb9f96e 100644
--- a/migration/meson.build
+++ b/migration/meson.build
@@ -26,6 +26,7 @@ softmmu_ss.add(files(
'savevm.c',
'socket.c',
'tls.c',
+ 'threadinfo.c',
), gnutls)
softmmu_ss.add(when: rdma, if_true: files('rdma.c'))
--
2.39.1
