From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37984) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fhK99-0003We-B3 for qemu-devel@nongnu.org; Sun, 22 Jul 2018 15:36:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fhK96-00016k-7j for qemu-devel@nongnu.org; Sun, 22 Jul 2018 15:35:59 -0400 Received: from mail-pf1-x442.google.com ([2607:f8b0:4864:20::442]:33572) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fhK96-00016b-1t for qemu-devel@nongnu.org; Sun, 22 Jul 2018 15:35:56 -0400 Received: by mail-pf1-x442.google.com with SMTP id b17-v6so495856pfi.0 for ; Sun, 22 Jul 2018 12:35:55 -0700 (PDT) From: Zhang Chen Date: Mon, 23 Jul 2018 03:33:49 +0800 Message-Id: <20180722193350.6028-20-zhangckid@gmail.com> In-Reply-To: <20180722193350.6028-1-zhangckid@gmail.com> References: <20180722193350.6028-1-zhangckid@gmail.com> Subject: [Qemu-devel] [PATCH V10 19/20] COLO: quick failover process by kick COLO thread List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, Paolo Bonzini , Juan Quintela , "Dr . David Alan Gilbert" , Jason Wang , Eric Blake , Markus Armbruster Cc: Zhang Chen , zhanghailiang , Li Zhijian From: zhanghailiang COLO thread may sleep at qemu_sem_wait(&s->colo_checkpoint_sem), while failover works begin, It's better to wakeup it to quick the process. Signed-off-by: zhanghailiang Reviewed-by: Dr. David Alan Gilbert --- migration/colo.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/migration/colo.c b/migration/colo.c index 8221a18add..e951159071 100644 --- a/migration/colo.c +++ b/migration/colo.c @@ -131,6 +131,11 @@ static void primary_vm_do_failover(void) migrate_set_state(&s->state, MIGRATION_STATUS_COLO, MIGRATION_STATUS_COMPLETED); + /* + * kick COLO thread which might wait at + * qemu_sem_wait(&s->colo_checkpoint_sem). + */ + colo_checkpoint_notify(migrate_get_current()); /* * Wake up COLO thread which may blocked in recv() or send(), @@ -539,6 +544,9 @@ static void colo_process_checkpoint(MigrationState *s) qemu_sem_wait(&s->colo_checkpoint_sem); + if (s->state != MIGRATION_STATUS_COLO) { + goto out; + } ret = colo_do_checkpoint_transaction(s, bioc, fb); if (ret < 0) { goto out; -- 2.17.1