Messages in this thread | | | Date | Fri, 8 Apr 2011 14:41:02 +0800 | Subject | Re: KGTP (Linux Kernel debugger and tracer) 20110405 release | From | Dongdong Deng <> |
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On Fri, Apr 8, 2011 at 1:36 PM, Hui Zhu <teawater@gmail.com> wrote: > On Wed, Apr 6, 2011 at 16:19, Peter Zijlstra <peterz@infradead.org> wrote: >> On Wed, 2011-04-06 at 13:54 +0800, Hui Zhu wrote: >> >>> This is a good question. >>> >>> The KGTP is completely different with KGDB. It will not supply simple >>> gdbrsp debug interface to user. It just supply interface between the >>> kernel tracepoint(Now, just support kprobe, will add others later) and >>> GDB tracepoint function. >>> >>> So user can debug and trace Linux kernel with GDB without stop the >>> Linux Kernel (So the GDB can running on this Kernel). It is a trace >>> tools and debug tools. >> >> But this isn't really an answer either. Could you extend the existing >> KGDB infrastructure to provide these features and thereby re-use >> existing infrastructure to reduce your patch size and code duplication? >> >> Jason (the KGDB maintainer) certainly thought there was much possibility >> there when I spoke to him yesterday. >> >> Think of it this way, wouldn't it be much better if there was one tool >> that could provide the combined feature set of KGDB and KGTP? >> > > Thanks Peter. I think it is very good. > > Which part do you think kgtp can share with kgdb?
The main realizing of "kgtp" was based on the sub protocol 'Tracepoint-Packets' of 'gdb Remote Serial Protocol'.
http://sourceware.org/gdb/current/onlinedocs/gdb/Tracepoint-Packets.html#Tracepoint-Packets
and kgdb have realized most of gdb remote serial protocols.
thus the protocol 'Tracepoint-Packets' implement of kgtp could share with kgdb, and the breakpoint handler could follow kgdb's from kprobe,
the offline gdb operate interface(an kernel inside gdbserver for gdb) could realize a module like "kgdbts" module implement (linux-2.6/drivers/misc/kgdbts.c).
Thanks, Dongdong -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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