From patchwork Tue May 25 10:24:13 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 53532 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 0867FB7D49 for ; Tue, 25 May 2010 20:39:22 +1000 (EST) Received: from localhost ([127.0.0.1]:44834 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OGrXW-0004hJ-6e for incoming@patchwork.ozlabs.org; Tue, 25 May 2010 06:39:14 -0400 Received: from [140.186.70.92] (port=47923 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OGrJe-0006Rd-Vl for qemu-devel@nongnu.org; Tue, 25 May 2010 06:25:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OGrJc-0001XG-Vv for qemu-devel@nongnu.org; Tue, 25 May 2010 06:24:54 -0400 Received: from mtagate5.de.ibm.com ([195.212.17.165]:57872) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OGrJc-0001Ro-MO for qemu-devel@nongnu.org; Tue, 25 May 2010 06:24:52 -0400 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate5.de.ibm.com (8.13.1/8.13.1) with ESMTP id o4PAOZHl021162 for ; Tue, 25 May 2010 10:24:35 GMT Received: from d12av01.megacenter.de.ibm.com (d12av01.megacenter.de.ibm.com [9.149.165.212]) by d12nrmr1607.megacenter.de.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o4PAOZBa757968 for ; Tue, 25 May 2010 12:24:35 +0200 Received: from d12av01.megacenter.de.ibm.com (loopback [127.0.0.1]) by d12av01.megacenter.de.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id o4PAOZUg009050 for ; Tue, 25 May 2010 12:24:35 +0200 Received: from stefan-thinkpad.manchester-maybrook.uk.ibm.com (dyn-9-174-219-32.manchester-maybrook.uk.ibm.com [9.174.219.32]) by d12av01.megacenter.de.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id o4PAOX0f008947; Tue, 25 May 2010 12:24:35 +0200 From: Stefan Hajnoczi To: , Date: Tue, 25 May 2010 11:24:13 +0100 Message-Id: <1274783056-14759-5-git-send-email-stefanha@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1274783056-14759-1-git-send-email-stefanha@linux.vnet.ibm.com> References: <1274783056-14759-1-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) Cc: Jan Kiszka , Anthony Liguori , Avi Kivity , Stefan Hajnoczi , Prerna Saxena Subject: [Qemu-devel] [PATCH 4/7] trace: Add LTTng Userspace Tracer backend 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 This patch adds LTTng Userspace Tracer (UST) backend support. The UST system requires no kernel support but libust and liburcu must be installed. $ ./configure --trace-backend ust $ make Start the UST daemon: $ ustd & List available tracepoints and enable some: $ ustctl --list-markers $(pgrep qemu) [...] {PID: 5458, channel/marker: ust/paio_submit, state: 0, fmt: "acb %p opaque %p sector_num %lu nb_sectors %lu type %lu" 0x4b32ba} $ ustctl --enable-marker "ust/paio_submit" $(pgrep qemu) Run the trace: $ ustctl --create-trace $(pgrep qemu) $ ustctl --start-trace $(pgrep qemu) [...] $ ustctl --stop-trace $(pgrep qemu) $ ustctl --destroy-trace $(pgrep qemu) Trace results can be viewed using lttv-gui. More information about UST: http://lttng.org/ust Signed-off-by: Stefan Hajnoczi --- configure | 5 +++- tracetool | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 79 insertions(+), 3 deletions(-) diff --git a/configure b/configure index 7d2c69b..675d0fc 100755 --- a/configure +++ b/configure @@ -829,7 +829,7 @@ echo " --enable-docs enable documentation build" echo " --disable-docs disable documentation build" echo " --disable-vhost-net disable vhost-net acceleration support" echo " --enable-vhost-net enable vhost-net acceleration support" -echo " --trace-backend=B Trace backend nop simple" +echo " --trace-backend=B Trace backend nop simple ust" echo "" echo "NOTE: The object files are built at the place where configure is launched" exit 1 @@ -2302,6 +2302,9 @@ bsd) esac echo "TRACE_BACKEND=$trace_backend" >> $config_host_mak +if test "$trace_backend" = "ust"; then + LIBS="-lust $LIBS" +fi tools= if test `expr "$target_list" : ".*softmmu.*"` != 0 ; then diff --git a/tracetool b/tracetool index f094ddc..9ea9c08 100755 --- a/tracetool +++ b/tracetool @@ -3,12 +3,13 @@ usage() { cat >&2 <" +} + +linetoh_ust() +{ + local name args argnames + name=$(get_name "$1") + args=$(get_args "$1") + argnames=$(get_argnames "$1") + + cat < +#include "trace.h" +EOF +} + +linetoc_ust() +{ + local name args argnames fmt + name=$(get_name "$1") + args=$(get_args "$1") + argnames=$(get_argnames "$1") + fmt=$(get_fmt "$1") + + cat <