From patchwork Tue Apr 3 08:38:12 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lai Jiangshan X-Patchwork-Id: 150345 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id EEF29B6FC9 for ; Tue, 3 Apr 2012 18:50:02 +1000 (EST) Received: from localhost ([::1]:38195 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SEzRA-00049I-Ap for incoming@patchwork.ozlabs.org; Tue, 03 Apr 2012 04:50:00 -0400 Received: from eggs.gnu.org ([208.118.235.92]:37949) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SEzQh-0003uk-Iy for qemu-devel@nongnu.org; Tue, 03 Apr 2012 04:49:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SEzQb-0006VZ-Er for qemu-devel@nongnu.org; Tue, 03 Apr 2012 04:49:31 -0400 Received: from [222.73.24.84] (port=26658 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SEzQb-0006Uz-3l for qemu-devel@nongnu.org; Tue, 03 Apr 2012 04:49:25 -0400 X-IronPort-AV: E=Sophos;i="4.75,362,1330876800"; d="scan'208";a="4676338" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 03 Apr 2012 16:49:02 +0800 Received: from mailserver.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id q338XAOi029013; Tue, 3 Apr 2012 16:33:31 +0800 Received: from localhost.localdomain ([10.167.225.146]) by mailserver.fnst.cn.fujitsu.com (Lotus Domino Release 8.5.3) with ESMTP id 2012040316325361-36915 ; Tue, 3 Apr 2012 16:32:53 +0800 From: Lai Jiangshan To: Kevin Wolf , Stefan Hajnoczi , Anthony Liguori Date: Tue, 3 Apr 2012 16:38:12 +0800 Message-Id: <1333442297-18932-5-git-send-email-laijs@cn.fujitsu.com> X-Mailer: git-send-email 1.7.4.4 In-Reply-To: <1333442297-18932-1-git-send-email-laijs@cn.fujitsu.com> References: <1333442297-18932-1-git-send-email-laijs@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/04/03 16:32:53, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/04/03 16:33:23, Serialize complete at 2012/04/03 16:33:23 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 222.73.24.84 Cc: qemu-devel@nongnu.org, Lai Jiangshan Subject: [Qemu-devel] [PATCH 05/10] coroutine: add qemu_co_runnable_schedule() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org split qemu_co_queue_next() as two parts: the first part is dequeuing next from the wait queue. the second part is schedule it to the runnable queue(qemu_co_runnable_schedule()) Signed-off-by: Lai Jiangshan Reviewed-by: Paolo Bonzini --- qemu-coroutine-lock.c | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) diff --git a/qemu-coroutine-lock.c b/qemu-coroutine-lock.c index 7c29bc4..6f47685 100644 --- a/qemu-coroutine-lock.c +++ b/qemu-coroutine-lock.c @@ -44,6 +44,12 @@ static void qemu_co_process_runnable(void *opaque) } } +static void qemu_co_runnable_schedule(Coroutine *co) +{ + QTAILQ_INSERT_TAIL(&co_runnable_queue, co, co_queue_next); + qemu_bh_schedule(co_runnable_bh); +} + static void __attribute__((constructor)) co_runnable_bh_init(void) { co_runnable_bh = qemu_bh_new(qemu_co_process_runnable, NULL); @@ -77,9 +83,8 @@ bool qemu_co_queue_next(CoQueue *queue) next = QTAILQ_FIRST(&queue->entries); if (next) { QTAILQ_REMOVE(&queue->entries, next, co_queue_next); - QTAILQ_INSERT_TAIL(&co_runnable_queue, next, co_queue_next); trace_qemu_co_queue_next(next); - qemu_bh_schedule(co_runnable_bh); + qemu_co_runnable_schedule(next); } return (next != NULL);