From: "Frank Ch. Eigler" <fche@redhat.com>
To: Hui Zhu <teawater@gmail.com>
Cc: Steven <mqyoung@gmail.com>,
"gdb@sourceware.org" <gdb@sourceware.org>,
linux-kernel@vger.kernel.org, Michael Snyder <msnyder@vmware.com>,
Marc Khouzam <marc.khouzam@ericsson.com>,
Thiago Jung Bauermann <thiago.bauermann@gmail.com>
Subject: Re: Linux Kernel GDB tracepoint module 2010-8-30 release
Date: Sat, 4 Sep 2010 01:11:38 -0400 [thread overview]
Message-ID: <20100904051138.GC10118@redhat.com> (raw)
In-Reply-To: <AANLkTi=V13SpXeMzmnCWvh-ooAgnVP8kA5UsBsm89YDr@mail.gmail.com>
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
next prev parent reply other threads:[~2010-09-04 5:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-30 7:00 Linux Kernel GDB tracepoint module 2010-8-30 release Hui Zhu
2010-09-03 9:06 ` Steven
2010-09-03 14:05 ` Frank Ch. Eigler
2010-09-04 4:29 ` Hui Zhu
2010-09-04 5:11 ` Frank Ch. Eigler [this message]
2010-09-04 15:04 ` Hui Zhu
2010-09-04 16:34 ` Hui Zhu
2010-09-04 18:22 ` Frank Ch. Eigler
2010-09-04 3:41 ` Hui Zhu
2010-09-04 7:47 ` Hui Zhu
2010-09-04 9:01 ` Steven
2010-09-04 9:10 ` Hui Zhu
2010-09-04 8:39 ` Steven
[not found] ` <1283590584.1685.39.camel@steven>
2010-09-04 9:17 ` Hui Zhu
2010-09-04 9:26 ` Steven
2010-09-04 14:58 ` Hui Zhu
2010-09-04 16:01 ` Steven
2010-09-04 16:42 ` Hui Zhu
2010-09-04 16:47 ` Steven
2010-09-06 7:21 ` Hui Zhu
2010-09-06 7:50 ` Hui Zhu
2010-09-06 9:30 ` Log of Using KGTP Steven
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