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[Qemu-devel] Re: [RFC 0/5] Tracing backends
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] Re: [RFC 0/5] Tracing backends |
Date: |
Sun, 23 May 2010 17:48:10 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Stefan Hajnoczi wrote:
> 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
>
Nice! Will have a closer look once timer permits, specifically to check
how ftrace can be added to this. Looks indeed straightforward on first
sight.
Jan
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- [Qemu-devel] [PATCH 2/5] trace: Add simple built-in tracing backend, (continued)
- [Qemu-devel] [PATCH 2/5] trace: Add simple built-in tracing backend, Stefan Hajnoczi, 2010/05/22
- [Qemu-devel] [PATCH 4/5] trace: Trace qemu_malloc() and qemu_vmalloc(), Stefan Hajnoczi, 2010/05/22
- [Qemu-devel] [PATCH 5/5] trace: Trace virtio-blk, multiwrite, and paio_submit, Stefan Hajnoczi, 2010/05/22
- [Qemu-devel] [PATCH 3/5] trace: Add LTTng Userspace Tracer backend, Stefan Hajnoczi, 2010/05/22
- [Qemu-devel] [PATCH 1/5] trace: Add trace-events file for declaring trace events, Stefan Hajnoczi, 2010/05/22
- [Qemu-devel] Re: [RFC 0/5] Tracing backends,
Jan Kiszka <=