Messages in this thread | | | Date | Sat, 4 Sep 2010 01:11:38 -0400 | From | "Frank Ch. Eigler" <> | Subject | Re: Linux Kernel GDB tracepoint module 2010-8-30 release |
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Hi -
On Sat, Sep 04, 2010 at 12:29:56PM +0800, Hui Zhu wrote:
> [...] Could you talk about how it do call stack dump like following? > (gdb) trace vfs_readdir > Tracepoint 1 at 0xffffffff8113f7fc: file > /home/teawater/kernel/linux-2.6/fs/readdir.c, line 24. > (gdb) actions > >collect *(unsigned char *)$rsp@512
probe kernel.function("vfs_readdir") { // if you want the whole kernel-side backtrace, dwarf-unwound print_backtrace() // or else just hex-dump a region printf("%*M\n", 512, register("rsp")) }
> BTW, I was not find out which ARCH of the systemtap support in its > website? It support all the arch that kprobe support?
Yes, basically, though it's mostly tested on RHELy platforms (x86, powerpc, s390, ia64).
- FChE
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