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Re: [Qemu-devel] [PATCH v7 0/3] Simpletrace v2: Support multiple args, s

From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [PATCH v7 0/3] Simpletrace v2: Support multiple args, strings.
Date: Tue, 17 Jul 2012 16:23:54 +0100

On Tue, Jul 3, 2012 at 10:20 AM, Harsh Prateek Bora
<address@hidden> wrote:
> Existing simpletrace backend allows to trace at max 6 args and does not
> support strings. This newer tracelog format gets rid of fixed size records
> and therefore allows to trace variable number of args including strings.
> Sample trace:
> v9fs_version 0.000 tag=0xffff id=0x64 msize=0x2000 version=9P2000.L
> v9fs_version_return 6.705 tag=0xffff id=0x64 msize=0x2000 version=9P2000.L
> v9fs_attach 174.467 tag=0x1 id=0x68 fid=0x0 afid=0xffffffffffffffff
> uname=nobody aname=
> v9fs_attach_return 4720.454 tag=0x1 id=0x68 type=0xffffffffffffff80
> version=0x4f2a4dd0  path=0x220ea6

I have successfully tested it with the fix that I posted.  Writing
simpletrace.Analyzer Python scripts still works - now with string
arguments too :).

Besides the last few comments on Patch 2, this looks okay now.


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