From patchwork Tue Mar 29 19:04:40 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 88836 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 AD04EB6F10 for ; Wed, 30 Mar 2011 06:30:02 +1100 (EST) Received: from localhost ([127.0.0.1]:40602 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q4ec4-00028n-1K for incoming@patchwork.ozlabs.org; Tue, 29 Mar 2011 15:30:00 -0400 Received: from [140.186.70.92] (port=56176 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q4eQo-00076X-Fn for qemu-devel@nongnu.org; Tue, 29 Mar 2011 15:18:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Q4eFC-00019P-AS for qemu-devel@nongnu.org; Tue, 29 Mar 2011 15:06:23 -0400 Received: from mtagate1.uk.ibm.com ([194.196.100.161]:34701) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Q4eFC-00019A-0k for qemu-devel@nongnu.org; Tue, 29 Mar 2011 15:06:22 -0400 Received: from d06nrmr1707.portsmouth.uk.ibm.com (d06nrmr1707.portsmouth.uk.ibm.com [9.149.39.225]) by mtagate1.uk.ibm.com (8.13.1/8.13.1) with ESMTP id p2TJ6KoH009686 for ; Tue, 29 Mar 2011 19:06:20 GMT Received: from d06av11.portsmouth.uk.ibm.com (d06av11.portsmouth.uk.ibm.com [9.149.37.252]) by d06nrmr1707.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p2TJ6raf1966116 for ; Tue, 29 Mar 2011 20:06:54 +0100 Received: from d06av11.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p2TJ6Ini008070 for ; Tue, 29 Mar 2011 13:06:19 -0600 Received: from stefanha-thinkpad.ibm.com (sig-9-146-150-201.uk.ibm.com [9.146.150.201]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id p2TJ6Gpp008044; Tue, 29 Mar 2011 13:06:17 -0600 From: Stefan Hajnoczi To: Date: Tue, 29 Mar 2011 20:04:40 +0100 Message-Id: <1301425482-8722-2-git-send-email-stefanha@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1301425482-8722-1-git-send-email-stefanha@linux.vnet.ibm.com> References: <1301425482-8722-1-git-send-email-stefanha@linux.vnet.ibm.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) X-Received-From: 194.196.100.161 Cc: Kevin Wolf , Anthony Liguori , Stefan Hajnoczi , Juan Quintela , Ryan Harper , Amit Shah Subject: [Qemu-devel] [PATCH v2 1/3] trace: Trace bdrv_set_locked() 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 It can be handy to know when the guest locks/unlocks the CD-ROM tray. This trace event makes that possible. Signed-off-by: Stefan Hajnoczi --- block.c | 2 ++ trace-events | 1 + 2 files changed, 3 insertions(+), 0 deletions(-) diff --git a/block.c b/block.c index c8e2f97..f812c20 100644 --- a/block.c +++ b/block.c @@ -2809,6 +2809,8 @@ void bdrv_set_locked(BlockDriverState *bs, int locked) { BlockDriver *drv = bs->drv; + trace_bdrv_set_locked(bs, locked); + bs->locked = locked; if (drv && drv->bdrv_set_locked) { drv->bdrv_set_locked(bs, locked); diff --git a/trace-events b/trace-events index 90c9e0b..3267df3 100644 --- a/trace-events +++ b/trace-events @@ -54,6 +54,7 @@ disable bdrv_aio_multiwrite_latefail(void *mcb, int i) "mcb %p i %d" disable bdrv_aio_flush(void *bs, void *opaque) "bs %p opaque %p" disable bdrv_aio_readv(void *bs, int64_t sector_num, int nb_sectors, void *opaque) "bs %p sector_num %"PRId64" nb_sectors %d opaque %p" disable bdrv_aio_writev(void *bs, int64_t sector_num, int nb_sectors, void *opaque) "bs %p sector_num %"PRId64" nb_sectors %d opaque %p" +disable bdrv_set_locked(void *bs, int locked) "bs %p locked %d" # hw/virtio-blk.c disable virtio_blk_req_complete(void *req, int status) "req %p status %d"