From: Steven Rostedt <rostedt@goodmis.org>
To: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>,
yrl.pp-manager.tt@hitachi.com,
Aaron Fabbri <aaronx.j.fabbri@intel.com>,
linux-kernel@vger.kernel.org, Divya Vyas <edivya.vyas@gmail.com>
Subject: Re: [PATCH trace-cmd V5 0/6] perf-probe: Bugfix and add new options for cache
Date: Mon, 22 Dec 2014 11:45:44 -0500 [thread overview]
Message-ID: <20141222114544.236d59ee@gandalf.local.home> (raw)
In-Reply-To: <20141222174736.10068.90306.stgit@localhost.localdomain>
On Mon, 22 Dec 2014 12:47:36 -0500
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> wrote:
> Hi,
>
> This is the version 5 series of virtio-trace for trace-cmd.
> The previous series is here; https://lkml.org/lkml/2014/7/10/747
Thanks, I'll take a look at this.
I don't think you wanted the cover subject. Also, the date on this
email is still over an hour in the future from this reply.
-- Steve
>
> I took over this work from Yoshihiro Yunomae. This version includes
> some fixes.
> - Add -N support for extract subcommand(1/6).
> - As Steven suggested, this send "-1V2\0<MAGIC>\0" instead
> of "V2\0<MAGIC>\0" at first.
> - Add a document of Protocol change in Documentation/Protocol.txt.
> (Now all the protocol descriptions are moved into that)
> - Cleanup the code and document a bit.
>
> How to use
> ==========
> 1. Run virt-server on a host
> # trace-cmd virt-server --dom guest1 -c 2
>
> 2. Set up of virtio-serial pipe of guest1 on the host
> Add the following tags to domain XML files.
> # virsh edit guest1
> <channel type='unix'>
> <source mode='connect' path='/tmp/trace-cmd/virt/agent-ctl-path'/>
> <target type='virtio' name='agent-ctl-path'/>
> </channel>
> <channel type='pipe'>
> <source path='/tmp/trace-cmd/virt/guest1/trace-path-cpu0'/>
> <target type='virtio' name='trace-path-cpu0'/>
> </channel>
> <channel type='pipe'>
> <source path='/tmp/trace-cmd/virt/guest1/trace-path-cpu1'/>
> <target type='virtio' name='trace-path-cpu1'/>
> </channel>
>
> 3. Boot the guest
> # virsh start guest1
>
> 4. Run the guest1's client(see trace-cmd-record(1) with the *--virt* option)
> # trace-cmd record -e sched* --virt
>
> If you want to boot another guest sends trace-data via virtio-serial,
> you will manually make the guest domain directory and trace data I/Fs.
>
> - Make guest domain directory on the host
> # mkdir -p /tmp/trace-cmd/virt/<DOMAIN>
> # chmod 710 /tmp/trace-cmd/virt/<DOMAIN>
> # chgrp qemu /tmp/trace-cmd/virt/<DOMAIN>
>
> - Make FIFO on the host
> # mkfifo /tmp/trace-cmd/virt/<DOMAIN>/trace-path-cpu{0,1,...,X}.{in,out}
>
> TODO
> ====
> - Don't use fixed directory and fifos. Make it flexible.
> - Don't depend on the libvirt. We can find fifos in /proc/<pid>/fd/*.
> - Cleanup the code. It is not well structured now.
>
> Thank you,
>
> ---
>
> Masami Hiramatsu (6):
> trace-cmd: Support -N option for trace-cmd extract
> trace-cmd/listen: Introduce trace-msg protocol (protocol v2)
> trace-cmd/msg: Use poll(2) to wait for a message
> trace-cmd/virt-server: Add virt-server mode for a virtualization environment
> trace-cmd/record: Add --virt option for record mode
> trace-cmd/virt-server: Add --dom option which makes a domain directory to virt-server
>
>
> Documentation/Protocol.txt | 163 +++++
> Documentation/trace-cmd-record.1.txt | 11
> Documentation/trace-cmd-virt-server.1.txt | 113 ++++
> Makefile | 2
> trace-cmd.c | 3
> trace-cmd.h | 15 +
> trace-listen.c | 666 +++++++++++++++++++---
> trace-msg.c | 870 +++++++++++++++++++++++++++++
> trace-msg.h | 31 +
> trace-output.c | 4
> trace-record.c | 160 +++++
> trace-recorder.c | 50 +-
> trace-usage.c | 18 +
> 13 files changed, 1966 insertions(+), 140 deletions(-)
> create mode 100644 Documentation/Protocol.txt
> create mode 100644 Documentation/trace-cmd-virt-server.1.txt
> create mode 100644 trace-msg.c
> create mode 100644 trace-msg.h
>
> --
> Masami HIRAMATSU
> Software Platform Research Dpt. Linux Technology Center
> Hitachi, Ltd., Yokohama Research Laboratory
> E-mail: masami.hiramatsu.pt@hitachi.com
next prev parent reply other threads:[~2014-12-22 16:45 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-22 17:47 [PATCH trace-cmd V5 0/6] perf-probe: Bugfix and add new options for cache Masami Hiramatsu
2014-12-22 16:45 ` Steven Rostedt [this message]
2014-12-24 1:13 ` Masami Hiramatsu
2014-12-22 17:47 ` [PATCH trace-cmd V5 1/6] trace-cmd: Support -N option for trace-cmd extract Masami Hiramatsu
2014-12-22 17:47 ` [PATCH trace-cmd V5 2/6] trace-cmd/listen: Introduce trace-msg protocol (protocol v2) Masami Hiramatsu
2015-05-20 3:12 ` Steven Rostedt
2015-05-22 4:53 ` Masami Hiramatsu
2015-05-22 9:14 ` Steven Rostedt
2015-05-24 1:59 ` Masami Hiramatsu
2014-12-22 17:47 ` [PATCH trace-cmd V5 3/6] trace-cmd/msg: Use poll(2) to wait for a message Masami Hiramatsu
2014-12-22 17:48 ` [PATCH trace-cmd V5 4/6] trace-cmd/virt-server: Add virt-server mode for a virtualization environment Masami Hiramatsu
2014-12-22 17:48 ` [PATCH trace-cmd V5 5/6] trace-cmd/record: Add --virt option for record mode Masami Hiramatsu
2014-12-22 17:48 ` [PATCH trace-cmd V5 6/6] trace-cmd/virt-server: Add --dom option which makes a domain directory to virt-server Masami Hiramatsu
2015-05-19 21:06 ` [PATCH trace-cmd V5 0/6] perf-probe: Bugfix and add new options for cache Steven Rostedt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20141222114544.236d59ee@gandalf.local.home \
--to=rostedt@goodmis.org \
--cc=aaronx.j.fabbri@intel.com \
--cc=edivya.vyas@gmail.com \
--cc=hidehiro.kawai.ez@hitachi.com \
--cc=linux-kernel@vger.kernel.org \
--cc=masami.hiramatsu.pt@hitachi.com \
--cc=yrl.pp-manager.tt@hitachi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).