linux-kernel - Re: KGTP (Linux Kernel debugger and tracer) 20111218 release

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Message-ID: <CANFwon0=VMXuXKDqZVYxad42J8hJ6wSuiPE4Sr0cSaxSo6dMPQ@mail.gmail.com>
Date:	Wed, 4 Jan 2012 23:12:53 +0800
From:	Hui Zhu <teawater@...il.com>
To:	Geunsik Lim <leemgs1@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	"gdb@...rceware.org" <gdb@...rceware.org>,
	kgtp <kgtp@...elists.org>,
	Marc Khouzam <marc.khouzam@...csson.com>,
	Thiago Jung Bauermann <thiago.bauermann@...il.com>,
	Steven <mqyoung@...il.com>, colyli@...il.com,
	Christoph Hellwig <hch@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Randy Dunlap <rdunlap@...otime.net>
Subject: Re: KGTP (Linux Kernel debugger and tracer) 20111218 release

On Mon, Dec 26, 2011 at 15:53, Geunsik Lim <leemgs1@...il.com> wrote:
> On Fri, Dec 23, 2011 at 3:21 PM, Hui Zhu <teawater@...il.com> wrote:
>> Hi Geunsik,
>>
>> On Fri, Dec 23, 2011 at 12:58, Geunsik Lim <leemgs1@...il.com> wrote:
>>> On Sun, Dec 18, 2011 at 9:11 PM, Hui Zhu <teawater@...il.com> wrote:
>>>> KGTP is a realtime and lightweight Linux Kernel debugger and tracer.
>>>>
>>>> It makes Linux Kernel supply a GDB remote debug interface. Then GDB in
>>>> current machine or remote machine (see
>>>> https://code.google.com/p/kgtp/wiki/HOWTO#Make_GDB_connect_to_gtp) can
>>>> debug and trace Linux through GDB tracepoint without stopping the
>>>> Linux Kernel.
>>>> And even if the board doesn't have GDB on it and doesn't have
>>>> interface for remote debug. It can debug the Linux Kernel using
>>>> offline debug (See
>>>> https://code.google.com/p/kgtp/wiki/HOWTO#Offline_debug).
>>>> And it can work with Android (See
>>>> https://code.google.com/p/kgtp/wiki/HowToUseKGTPinAndroid).
>>>> Now, it supports X86-32, X86-64, MIPS and ARM.
>>>>
>>>> Now, KGTP 20111218 release.
>>>> You can get the package for it from
>>>> http://kgtp.googlecode.com/files/kgtp_20111218.tar.bz2
>>>> or
>>>> svn co https://kgtp.googlecode.com/svn/tags/20111218
>>>>
>>>> The change of this release is:
>>>> Add gtp_rb to be the new frame buffer to make trace record speed up
>>>> and more friendly to the older version Linux kernel.
>>>> Rename gtp.patch to gtp_for_review.patch.
>>>> Add Linux Kernel patch gtp_3.0_to_upstream.patch(3.0 to upstream),
>>>> gtp_2.6.39.patch(2.6.39), gtp_2.6.33_to_2.6.38.patch(2.6.33 to 2.6.38)
>>>> and gtp_older_to_2.6.32.patch(older to 2.6.32).
>>> Thank you for your upgrade work for the compatibility among various
>>> linux version.
>>> I am testing normally on evaluation board based on ARM cortex using
>>> the latest Linux.
>>
>> Thanks.  Please tell me if you get some trouble with it.
>>
>>>> Then you can include KGTP in your Kernel source tree.
>>>> Add special trace state variable $gtp_version to show the version of KGTP.
>>>> Fix some build errors of gtp_for_review.patch.
>>>> Fix some build errors in ARM.
>>>> Update doc.
>>>> To get other change info please goto https://code.google.com/p/kgtp/wiki/UPDATE
>>>>
>>>> According to the comments of Christoph.  I make a patch for Linux
>>>> Kernel and make it looks OK with checkpatch.pl.  The file
>>>> gtp_for_review.patch is include in the source of KGTP code.
>>> I have one question about KGTP.
>>> Previously, GDB Tracepoints for linux Linux kernel 2.6.19 is developed
>>> by Jim Blandy
>>> of Cygnus. He also presented to share this practical approach at FOSDEM 2007.
>>> If you can, Can you explain the difference(e.g: merits, demerits, and
>>> so on) between
>>> GDB Tracepoint of Jim  and KGTP by you?
>>
>> I am not sure about this one.  Because I cannot find anything about
>> it.  Could you give me a link or something?
> Sorry I am late because of X-mas day.
> Refer to http://www.red-bean.com/trac/tracepoints
> You can read about Tracepoints for the Linux kernel in detail at the
> above website .

Is it included in Kernel upstream?
It is not update for a long time.


>>
>> For now, I just know the difference is I am a GDB developer too.  So I
>> can make KGTP develop more close to GDB devekop.  It can handle some
>> issue more easy.
>>
>> Thanks,
>> Hui
>>
>>>
>>>>
>>>> Thanks,
>>>> Hui
>>>
>>>
>>>
>>> --
>>> Best regards,
>>> Geunsik Lim ( Samsung Electronics )
>>> Blog : http://blog.naver.com/invain/
>>> Homepage: http://leemgs.fedorapeople.org
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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>
>
>
> --
> Best regards,
> Geunsik Lim ( Samsung Electronics )
> Blog : http://blog.naver.com/invain/
> Homepage: http://leemgs.fedorapeople.org
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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