Messages in this thread | | | From | Hui Zhu <> | Date | Tue, 7 Aug 2012 00:13:45 +0800 | Subject | KGTP (Linux Kernel debugger and tracer) 20120806 release (bug fix) |
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KGTP is a realtime and lightweight Linux debugger and tracer. To use it, you don't need patch or rebuild the Linux kernel. Just build KGTP module and insmod it is OK.
It makes Linux Kernel supply a GDB remote debug interface. Then GDB in current machine or remote machine can debug and trace Linux through GDB tracepoint and some other functions 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 HOWTO#/sys/kernel/debug/gtpframe_and_offline_debug). KGTP supports X86-32, X86-64, MIPS and ARM. KGTP is tested on Linux kernel 2.6.18 to upstream. And it can work with Android (See http://code.google.com/p/kgtp/wiki/HowToUseKGTPinAndroid).
Please go to http://code.google.com/p/kgtp/wiki/HOWTO or http://code.google.com/p/kgtp/wiki/HOWTO (Chinese) to get more info about howto use KGTP.
Now, KGTP 20120806 release. You can get the package for it from http://kgtp.googlecode.com/files/kgtp_20120805.tar.bz2 or svn co https://kgtp.googlecode.com/svn/tags/20120806
The main change of this release is: * When "make clean" with new Linux kernel. Linux kernel will clean itself. So change "make clean" to "rm" to handle it.
* Remove S_IFIFO from debugfs_create_file because new Kernel doesn't like it.
* Fix a bug of gtp_task_read. This bug will make this function can sleep sometimes. This bug is dangerous when tracepoint access user space memory.
* Support enable and disable when tracepoint is running.
* Fix build error with RHEL 6.3.
Please goto http://code.google.com/p/kgtp/wiki/UPDATE get more info about this release.
According to the comments of Christoph, Geoff and Andi. I make lite patch for review. Please goto https://lkml.org/lkml/2012/5/9/90 to see it.
Thanks, Hui
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