From: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
To: qemu-devel@nongnu.org, kvm@vger.kernel.org
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
Anthony Liguori <aliguori@us.ibm.com>,
Prerna Saxena <prerna@linux.vnet.ibm.com>
Subject: [Qemu-devel] [RFC 0/5] Tracing backends
Date: Sat, 22 May 2010 22:08:18 +0100 [thread overview]
Message-ID: <1274562503-10713-1-git-send-email-stefanha@linux.vnet.ibm.com> (raw)
The following patches against qemu.git allow static trace events to be declared
in QEMU. Trace events use a lightweight syntax and are independent of the
backend tracing system (e.g. LTTng UST).
Supported backends are:
* my trivial tracer ("simple")
* LTTng Userspace Tracer ("ust")
* no tracer ("nop", the default)
The ./configure option to choose a backend is --trace-backend=.
Main point of this patchset: adding new trace events is easy and we can switch
between backends without modifying the code.
Prerna: Would you like to add your tracing system as a backend? This would be
similar to my patches to add "simple" and "ust" backend support.
Jan: Adding kernel marker backend support should be straightforward if you are
interested.
These patches are also available at:
http://repo.or.cz/w/qemu/stefanha.git/shortlog/refs/heads/tracing
next reply other threads:[~2010-05-22 21:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-22 21:08 Stefan Hajnoczi [this message]
2010-05-22 21:08 ` [Qemu-devel] [PATCH 1/5] trace: Add trace-events file for declaring trace events Stefan Hajnoczi
2010-05-24 22:07 ` Anthony Liguori
2010-05-25 9:11 ` Avi Kivity
2010-05-24 22:20 ` Anthony Liguori
2010-05-25 8:22 ` Stefan Hajnoczi
2010-05-22 21:08 ` [Qemu-devel] [PATCH 2/5] trace: Add simple built-in tracing backend Stefan Hajnoczi
2010-05-22 21:08 ` [Qemu-devel] [PATCH 3/5] trace: Add LTTng Userspace Tracer backend Stefan Hajnoczi
2010-05-23 15:50 ` [Qemu-devel] " Jan Kiszka
2010-05-22 21:08 ` [Qemu-devel] [PATCH 4/5] trace: Trace qemu_malloc() and qemu_vmalloc() Stefan Hajnoczi
2010-05-22 21:08 ` [Qemu-devel] [PATCH 5/5] trace: Trace virtio-blk, multiwrite, and paio_submit Stefan Hajnoczi
2010-05-23 15:48 ` [Qemu-devel] Re: [RFC 0/5] Tracing backends Jan Kiszka
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