From patchwork Mon Oct 3 11:30:44 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 117441 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 7EE55B6F65 for ; Mon, 3 Oct 2011 22:32:04 +1100 (EST) Received: from localhost ([::1]:47563 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RAgkb-0003e0-7G for incoming@patchwork.ozlabs.org; Mon, 03 Oct 2011 07:32:01 -0400 Received: from eggs.gnu.org ([140.186.70.92]:55174) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RAgjj-0001Bx-Pa for qemu-devel@nongnu.org; Mon, 03 Oct 2011 07:31:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RAgje-0005Bj-8r for qemu-devel@nongnu.org; Mon, 03 Oct 2011 07:31:07 -0400 Received: from mtagate2.uk.ibm.com ([194.196.100.162]:55319) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RAgjd-0005BU-KP for qemu-devel@nongnu.org; Mon, 03 Oct 2011 07:31:01 -0400 Received: from d06nrmr1707.portsmouth.uk.ibm.com (d06nrmr1707.portsmouth.uk.ibm.com [9.149.39.225]) by mtagate2.uk.ibm.com (8.13.1/8.13.1) with ESMTP id p93BV0sO019496 for ; Mon, 3 Oct 2011 11:31:01 GMT Received: from d06av02.portsmouth.uk.ibm.com (d06av02.portsmouth.uk.ibm.com [9.149.37.228]) by d06nrmr1707.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p93BV0dD2318548 for ; Mon, 3 Oct 2011 12:31:00 +0100 Received: from d06av02.portsmouth.uk.ibm.com (loopback [127.0.0.1]) by d06av02.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p93BV08D024704 for ; Mon, 3 Oct 2011 05:31:00 -0600 Received: from localhost (dyn-9-174-219-31.manchester-maybrook.uk.ibm.com [9.174.219.31]) by d06av02.portsmouth.uk.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id p93BUwul024576; Mon, 3 Oct 2011 05:30:59 -0600 From: Stefan Hajnoczi To: Date: Mon, 3 Oct 2011 12:30:44 +0100 Message-Id: <1317641447-8084-3-git-send-email-stefanha@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.6.3 In-Reply-To: <1317641447-8084-1-git-send-email-stefanha@linux.vnet.ibm.com> References: <1317641447-8084-1-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: 194.196.100.162 Cc: Anthony Liguori , Stefan Hajnoczi Subject: [Qemu-devel] [PATCH 2/4] trace: trace bdrv_open_common() 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 bdrv_open_common() is a useful point to trace since it reveals the filename and block driver for a given BlockDriverState. 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 e3fe97f..1ae22d5 100644 --- a/block.c +++ b/block.c @@ -475,6 +475,8 @@ static int bdrv_open_common(BlockDriverState *bs, const char *filename, assert(drv != NULL); + trace_bdrv_open_common(bs, filename, flags, drv->format_name); + bs->file = NULL; bs->total_sectors = 0; bs->encrypted = 0; diff --git a/trace-events b/trace-events index b7ddf14..f408564 100644 --- a/trace-events +++ b/trace-events @@ -56,6 +56,7 @@ virtio_console_chr_read(unsigned int port, int size) "port %u, size %d" virtio_console_chr_event(unsigned int port, int event) "port %u, event %d" # block.c +bdrv_open_common(void *bs, const char *filename, int flags, const char *format_name) "bs %p filename \"%s\" flags %#x format_name \"%s\"" multiwrite_cb(void *mcb, int ret) "mcb %p ret %d" bdrv_aio_multiwrite(void *mcb, int num_callbacks, int num_reqs) "mcb %p num_callbacks %d num_reqs %d" bdrv_aio_multiwrite_earlyfail(void *mcb) "mcb %p"