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Message-ID: <CABiHV1QoPf1KK-BqRv7GMmVabKJm9GEz5kyN63nX0ASXsaF7eA@mail.gmail.com> Date: Thu, 5 Jan 2012 00:48:33 +0900 From: Geunsik Lim <leemgs1@...il.com> To: Hui Zhu <teawater@...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 Thu, Jan 5, 2012 at 12:12 AM, Hui Zhu <teawater@...il.com> wrote: > 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? Currently, GDB Tracepoint of Jim is not included in mainline version. > It is not update for a long time. My questions is not the merging issue into latest Linux (upstream kernel). I want you to explain the merits of KGTP compared to GDB Tracepoint of Jim that presented at FOSDEM 2007. When I compared/checked internals between KGTP and GDB Tracepoint of Jim, It seems that both are same approaches. Can you share the difference(e.g: merits, demerits, design, and so on) between GDB Tracepoint of Jim and KGTP of you If you can? Thanks. > > >>> >>> 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 >>>> the body of a message to majordomo@...r.kernel.org >>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>> Please read the FAQ at http://www.tux.org/lkml/ >> >> >> >> -- >> 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 >> the body of a message to majordomo@...r.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ -- Best regards, Geunsik Lim, Samsung Electronics Homepage: http://leemgs.fedorapeople.org ----------------------------------------------------------------------- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ ----------------------------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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