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

[Geunsik Lim]

On Fri, Dec 23, 2011 at 3:21 PM, Hui Zhu <teawater@xxxxxxxxx> wrote:
> Hi Geunsik,
>
> On Fri, Dec 23, 2011 at 12:58, Geunsik Lim <leemgs1@xxxxxxxxx> wrote:
>> On Sun, Dec 18, 2011 at 9:11 PM, Hui Zhu <teawater@xxxxxxxxx> 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. ÂPlease 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. ÂI make a patch for Linux
>>> Kernel and make it looks OK with checkpatch.pl. ÂThe 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 Âand KGTP by you?
>
> I am not sure about this one. ÂBecause I cannot find anything about
> it. ÂCould 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 .
>
> For now, I just know the difference is I am a GDB developer too. ÂSo I
> can make KGTP develop more close to GDB devekop. ÂIt 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
>> --
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-- 
Best regards,
Geunsik Lim ( Samsung Electronics )
Blog : http://blog.naver.com/invain/
Homepage: http://leemgs.fedorapeople.org
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