From patchwork Wed Jan 26 09:42:06 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshiaki Tamura X-Patchwork-Id: 80467 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 9FD0EB70DE for ; Wed, 26 Jan 2011 20:55:26 +1100 (EST) Received: from localhost ([127.0.0.1]:38247 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Pi25v-0000Te-BK for incoming@patchwork.ozlabs.org; Wed, 26 Jan 2011 04:55:19 -0500 Received: from [140.186.70.92] (port=51237 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Pi1uz-0004Ki-Oy for qemu-devel@nongnu.org; Wed, 26 Jan 2011 04:44:12 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Pi1ui-0006Bm-91 for qemu-devel@nongnu.org; Wed, 26 Jan 2011 04:43:51 -0500 Received: from sh.osrg.net ([192.16.179.4]:45635) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Pi1uh-0006B6-Or for qemu-devel@nongnu.org; Wed, 26 Jan 2011 04:43:44 -0500 Received: from fs.osrg.net (postfix@fs.osrg.net [10.0.0.12]) by sh.osrg.net (8.14.3/8.14.3/OSRG-NET) with ESMTP id p0Q9hJ5v020586; Wed, 26 Jan 2011 18:43:20 +0900 Received: from localhost (hype-nh0.osrg.net [10.72.1.48]) by fs.osrg.net (Postfix) with ESMTP id 1A3021B800F; Wed, 26 Jan 2011 18:43:17 +0900 (JST) From: Yoshiaki Tamura To: kvm@vger.kernel.org, qemu-devel@nongnu.org Date: Wed, 26 Jan 2011 18:42:06 +0900 Message-Id: <1296034931-10843-15-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> X-Mailer: git-send-email 1.7.1.2 In-Reply-To: <1296034931-10843-1-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> References: <1296034931-10843-1-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> X-Dispatcher: imput version 20070423(IM149) Lines: 58 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (sh.osrg.net [192.16.179.4]); Wed, 26 Jan 2011 18:43:24 +0900 (JST) X-Virus-Scanned: clamav-milter 0.96.5 at sh X-Virus-Status: Clean X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) Cc: kwolf@redhat.com, aliguori@us.ibm.com, mtosatti@redhat.com, ananth@in.ibm.com, mst@redhat.com, dlaor@redhat.com, vatsa@linux.vnet.ibm.com, Yoshiaki Tamura , blauwirbel@gmail.com, ohmura.kei@lab.ntt.co.jp, avi@redhat.com, psuriset@linux.vnet.ibm.com, stefanha@linux.vnet.ibm.com Subject: [Qemu-devel] [PATCH 14/19] block: insert event-tap to bdrv_aio_writev() and bdrv_aio_flush(). X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org event-tap function is called only when it is on, and requests sent from device emulators. Signed-off-by: Yoshiaki Tamura --- block.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) diff --git a/block.c b/block.c index ff2795b..e4df9b6 100644 --- a/block.c +++ b/block.c @@ -28,6 +28,7 @@ #include "block_int.h" #include "module.h" #include "qemu-objects.h" +#include "event-tap.h" #ifdef CONFIG_BSD #include @@ -1476,6 +1477,10 @@ int bdrv_flush(BlockDriverState *bs) } if (bs->drv && bs->drv->bdrv_flush) { + if (*bs->device_name && event_tap_is_on()) { + event_tap_bdrv_flush(); + } + return bs->drv->bdrv_flush(bs); } @@ -2111,6 +2116,11 @@ BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num, if (bdrv_check_request(bs, sector_num, nb_sectors)) return NULL; + if (*bs->device_name && event_tap_is_on()) { + return event_tap_bdrv_aio_writev(bs, sector_num, qiov, nb_sectors, + cb, opaque); + } + if (bs->dirty_bitmap) { blk_cb_data = blk_dirty_cb_alloc(bs, sector_num, nb_sectors, cb, opaque); @@ -2374,6 +2384,11 @@ BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs, if (!drv) return NULL; + + if (*bs->device_name && event_tap_is_on()) { + return event_tap_bdrv_aio_flush(bs, cb, opaque); + } + return drv->bdrv_aio_flush(bs, cb, opaque); }