From: Christoph Hellwig <hch@infradead.org>
To: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>, Steven Rostedt <rostedt@goodmis.org>,
lkml <linux-kernel@vger.kernel.org>,
systemtap <systemtap@sources.redhat.com>,
kvm <kvm@vger.kernel.org>,
Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Tom Zanussi <tzanussi@gmail.com>
Subject: Re: [PATCH -tip v5 4/7] tracing: add kprobe-based event tracer
Date: Mon, 11 May 2009 09:32:00 -0000 [thread overview]
Message-ID: <20090511093224.GC23875@infradead.org> (raw)
In-Reply-To: <20090509004859.5505.18729.stgit@localhost.localdomain>
On Fri, May 08, 2009 at 08:48:59PM -0400, Masami Hiramatsu wrote:
> Add kprobes based event tracer on ftrace.
>
> This tracer is similar to the events tracer which is based on Tracepoint
> infrastructure. Instead of Tracepoint, this tracer is based on kprobes(kprobe
> and kretprobe). It probes anywhere where kprobes can probe(this means, all
> functions body except for __kprobes functions).
That's some pretty cool functionality, especially together with patch 7.
But as with so many tracing bits in the kernel it's just lowlevel bits
without a good user interface. We'd really need some high-level way
for sysadmins/developers to use it. E.g. a version of the systemtap
compiler that doesn't build a kernel module but instead uses the event
tracer + the kprobes tracer.
Or a model like Tom's zedtrace where a perl script would do the dwarf
lookups and generates these probes in addition to the filtered event
traces.
next prev parent reply other threads:[~2009-05-11 9:32 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-09 0:46 [PATCH -tip v5 0/7] tracing: kprobe-based event tracer and x86 instruction decoder Masami Hiramatsu
2009-05-09 0:46 ` [PATCH -tip v5 1/7] x86: instruction decorder API Masami Hiramatsu
2009-05-11 9:27 ` Christoph Hellwig
2009-05-11 14:35 ` Masami Hiramatsu
2009-05-13 8:23 ` Gleb Natapov
2009-05-13 9:35 ` Przemysław Pawełczyk
2009-05-13 9:43 ` Gleb Natapov
2009-05-13 14:34 ` Masami Hiramatsu
2009-05-13 15:20 ` Gleb Natapov
2009-05-09 0:47 ` [PATCH -tip v5 2/7] kprobes: checks probe address is instruction boudary on x86 Masami Hiramatsu
2009-05-11 14:20 ` Steven Rostedt
2009-05-11 14:59 ` Masami Hiramatsu
2009-05-11 15:12 ` Masami Hiramatsu
2009-05-11 15:22 ` Steven Rostedt
2009-05-11 18:19 ` Masami Hiramatsu
2009-05-09 0:47 ` [PATCH -tip v5 3/7] kprobes: cleanup fix_riprel() using insn decoder " Masami Hiramatsu
2009-05-09 1:16 ` [PATCH -tip v5 5/7] x86: fix kernel_trap_sp() Masami Hiramatsu
2009-05-11 9:28 ` Christoph Hellwig
2009-05-11 13:47 ` Masami Hiramatsu
2009-05-09 1:16 ` [PATCH -tip v5 6/7] x86: add pt_regs register and stack access APIs Masami Hiramatsu
2009-05-09 1:16 ` [PATCH -tip v5 7/7] tracing: add arguments support on kprobe-based event tracer Masami Hiramatsu
2009-05-11 14:35 ` Steven Rostedt
2009-05-09 1:16 ` [PATCH -tip v5 4/7] tracing: add " Masami Hiramatsu
2009-05-09 16:36 ` Frédéric Weisbecker
2009-05-09 17:33 ` Masami Hiramatsu
2009-05-11 21:26 ` Frederic Weisbecker
2009-05-11 9:32 ` Christoph Hellwig [this message]
2009-05-11 10:54 ` Ingo Molnar
2009-05-11 15:29 ` Frank Ch. Eigler
2009-05-09 4:43 ` [PATCH -tip v5 0/7] tracing: kprobe-based event tracer and x86 instruction decoder Ingo Molnar
2009-05-11 15:44 ` Masami Hiramatsu
2009-05-11 14:56 ` Steven Rostedt
2009-05-11 20:04 ` Masami Hiramatsu
2009-05-11 21:47 ` Ingo Molnar
2009-05-12 22:01 ` Masami Hiramatsu
2009-05-13 13:22 ` Ingo Molnar
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