migration/multifd: Release recv sem_sync earlier

Now that multifd_recv_terminate_threads() is called only once, release
the recv side sem_sync earlier like we do for the send side.

Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240220224138.24759-6-farosas@suse.de
Signed-off-by: Peter Xu <peterx@redhat.com>

diff --git a/migration/multifd.c b/migration/multifd.c
index fba00b9e8fb54ecbfa809177406d2e8eb2c0609e..43f0820996cfe989a7a73a6016bd54daf4d1c024 100644 (file)
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -1104,6 +1104,12 @@ static void multifd_recv_terminate_threads(Error *err)
     for (i = 0; i < migrate_multifd_channels(); i++) {
         MultiFDRecvParams *p = &multifd_recv_state->params[i];
 
+        /*
+         * multifd_recv_thread may hung at MULTIFD_FLAG_SYNC handle code,
+         * however try to wakeup it without harm in cleanup phase.
+         */
+        qemu_sem_post(&p->sem_sync);
+
         /*
          * We could arrive here for two reasons:
          *  - normal quit, i.e. everything went fine, just finished
@@ -1162,12 +1168,6 @@ void multifd_recv_cleanup(void)
     for (i = 0; i < migrate_multifd_channels(); i++) {
         MultiFDRecvParams *p = &multifd_recv_state->params[i];
 
-        /*
-         * multifd_recv_thread may hung at MULTIFD_FLAG_SYNC handle code,
-         * however try to wakeup it without harm in cleanup phase.
-         */
-        qemu_sem_post(&p->sem_sync);
-
         if (p->thread_created) {
             qemu_thread_join(&p->thread);
         }