Force wakeup after fd addition
diff --git a/src/core/lib/iomgr/ev_poll_posix.c b/src/core/lib/iomgr/ev_poll_posix.c
index 0240ea0..99874d4 100644
--- a/src/core/lib/iomgr/ev_poll_posix.c
+++ b/src/core/lib/iomgr/ev_poll_posix.c
@@ -768,6 +768,7 @@
   }
   pollset->fds[pollset->fd_count++] = fd;
   GRPC_FD_REF(fd, "multipoller");
+  pollset_kick(pollset, NULL);
 exit:
   gpr_mu_unlock(&pollset->mu);
 }