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Re: [Qemu-devel] [PATCH 3/3] trace: enable tracing in qemu-nbd
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH 3/3] trace: enable tracing in qemu-nbd |
Date: |
Thu, 19 May 2016 17:26:08 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
On 05/17/2016 02:20 AM, Denis V. Lunev wrote:
> Pls note, trace_init_backends() must be called in the final process, i.e.
s/Pls/Please/
> after daemonization. This is necessary to keep tracing thread in the
> proper process.
>
> Signed-off-by: Denis V. Lunev <address@hidden>
> CC: Paolo Bonzini <address@hidden>
> CC: Stefan Hajnoczi <address@hidden>
> CC: Kevin Wolf <address@hidden>
> ---
> qemu-nbd.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
Same comments as on 2/3 - missing documentation - this time, it is the
man page that is incomplete.
> @@ -87,6 +89,7 @@ static void usage(const char *name)
> "General purpose options:\n"
> " --object type,id=ID,... define an object such as 'secret' for
> providing\n"
> " passwords and/or encryption keys\n"
> +" -T, --trace FILE enable trace events listed in the given file\n"
Insufficient, compared to how qemu's help text reads.
But overall a cool concept. Are there any plans to convert some of the
TRACE() debugging printfs in nbd/* into actual trace points?
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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- [Qemu-devel] [PATCH 0/3] trace: enable tracing in qemu-io/qemu-nbd, Denis V. Lunev, 2016/05/17
- [Qemu-devel] [PATCH 2/3] trace: enable tracing in qemu-io, Denis V. Lunev, 2016/05/17
- [Qemu-devel] [PATCH 1/3] trace: move qemu_trace_opts to trace/control.c, Denis V. Lunev, 2016/05/17
- [Qemu-devel] [PATCH 3/3] trace: enable tracing in qemu-nbd, Denis V. Lunev, 2016/05/17
- Re: [Qemu-devel] [PATCH 3/3] trace: enable tracing in qemu-nbd,
Eric Blake <=
- Re: [Qemu-devel] [PATCH 0/3] trace: enable tracing in qemu-io/qemu-nbd, Paolo Bonzini, 2016/05/17
- Re: [Qemu-devel] [PATCH 0/3] trace: enable tracing in qemu-io/qemu-nbd, Stefan Hajnoczi, 2016/05/27