[Qemu-devel] [PATCH v10 20/24] migration: Delay start of migration main routines

[Juan Quintela <quintela@redhat.com>]

We need to make sure that we have started all the multifd threads.

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration/migration.c | 4 ++--
 migration/migration.h | 1 +
 migration/ram.c       | 3 +++
 migration/socket.c    | 3 +++
 4 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/migration/migration.c b/migration/migration.c
index c06c34ca0f..a355618220 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -429,7 +429,7 @@ static void migration_incoming_setup(QEMUFile *f)
     qemu_file_set_blocking(f, false);
 }
 
-static void migration_incoming_process(void)
+void migration_incoming_process(void)
 {
     Coroutine *co = qemu_coroutine_create(process_incoming_migration_co, NULL);
     qemu_coroutine_enter(co);
@@ -447,7 +447,7 @@ void migration_ioc_process_incoming(QIOChannel *ioc)
 
     if (!mis->from_src_file) {
         QEMUFile *f = qemu_fopen_channel_input(ioc);
-        migration_fd_process_incoming(f);
+        migration_incoming_setup(f);
         return;
     }
     multifd_recv_new_channel(ioc);
diff --git a/migration/migration.h b/migration/migration.h
index f40014cf94..03a940831d 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -184,6 +184,7 @@ void migrate_set_state(int *state, int old_state, int new_state);
 
 void migration_fd_process_incoming(QEMUFile *f);
 void migration_ioc_process_incoming(QIOChannel *ioc);
+void migration_incoming_process(void);
 
 bool  migration_has_all_channels(void);
 
diff --git a/migration/ram.c b/migration/ram.c
index 7ef0c2b7e2..1aab96bd5e 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -743,6 +743,9 @@ void multifd_recv_new_channel(QIOChannel *ioc)
     qemu_thread_create(&p->thread, p->name, multifd_recv_thread, p,
                        QEMU_THREAD_JOINABLE);
     atomic_inc(&multifd_recv_state->count);
+    if (multifd_recv_state->count == migrate_multifd_channels()) {
+        migration_incoming_process();
+    }
 }
 
 /**
diff --git a/migration/socket.c b/migration/socket.c
index b3b5571ebb..deda193de7 100644
--- a/migration/socket.c
+++ b/migration/socket.c
@@ -189,6 +189,9 @@ static gboolean socket_accept_incoming_migration(QIOChannel *ioc,
     if (migration_has_all_channels()) {
         /* Close listening socket as its no longer needed */
         qio_channel_close(ioc, NULL);
+        if (!migrate_use_multifd()) {
+            migration_incoming_process();
+        }
         return G_SOURCE_REMOVE;
     } else {
         return G_SOURCE_CONTINUE;
-- 
2.14.3