From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
"Frank Ch. Eigler" <fche@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
yrl.pp-manager.tt@hitachi.com
Subject: Re: [RFC PATCH -tip 0/9]ftrace, kprobes: Ftrace-based kprobe optimization
Date: Mon, 04 Jun 2012 21:24:07 +0900 [thread overview]
Message-ID: <4FCCA8E7.5070407@hitachi.com> (raw)
In-Reply-To: <1338811649.13348.486.camel@gandalf.stny.rr.com>
(2012/06/04 21:07), Steven Rostedt wrote:
> On Mon, 2012-06-04 at 20:45 +0900, Masami Hiramatsu wrote:
>> I think if I just register kprobe's ftrace_ops without start
>> tracing, I think we can just do tracing without "notrace".
>
> You should be able to register the filter first, and then register
> function tracer. If you register without setting the filter, you will
> start tracing all functions.
>
> I think that may be the problem you are seeing. You want to register the
> filter first and then the ftrace_ops.
Ah, that's all what I need to know! :)
OK, I'll do that for avoiding recursion problem.
Thanks!
--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com
prev parent reply other threads:[~2012-06-04 12:24 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-29 12:48 [RFC PATCH -tip 0/9]ftrace, kprobes: Ftrace-based kprobe optimization Masami Hiramatsu
2012-05-29 12:48 ` [RFC PATCH -tip 1/9] ftrace: Add pt_regs acceptable trace callback Masami Hiramatsu
2012-06-02 2:07 ` Steven Rostedt
2012-06-04 13:58 ` Masami Hiramatsu
2012-06-04 14:25 ` Steven Rostedt
2012-06-04 14:57 ` Masami Hiramatsu
2012-06-04 15:11 ` Steven Rostedt
2012-05-29 12:49 ` [RFC PATCH -tip 2/9] ftrace/x86-64: support SAVE_REGS feature on x86-64 Masami Hiramatsu
2012-05-29 23:05 ` Steven Rostedt
2012-05-30 6:39 ` Masami Hiramatsu
2012-05-30 11:34 ` Steven Rostedt
2012-05-29 12:49 ` [RFC PATCH -tip 3/9] ftrace/x86: Support SAVE_REGS feature on i386 Masami Hiramatsu
2012-05-29 12:49 ` [RFC PATCH -tip 4/9] ftrace: add ftrace_set_filter_ip() for address based filter Masami Hiramatsu
2012-05-29 12:49 ` [RFC PATCH -tip 5/9] kprobes: Inverse taking of module_mutex with kprobe_mutex Masami Hiramatsu
2012-05-29 12:49 ` [RFC PATCH -tip 6/9] kprobes: cleanup to separate probe-able check Masami Hiramatsu
2012-05-29 12:49 ` [RFC PATCH -tip 7/9] kprobes: Move locks into appropriate functions Masami Hiramatsu
2012-05-29 12:49 ` [RFC PATCH -tip 8/9] kprobes: introduce ftrace based optiomization Masami Hiramatsu
2012-05-30 7:22 ` Ananth N Mavinakayanahalli
2012-05-30 7:56 ` Masami Hiramatsu
2012-05-29 12:49 ` [RFC PATCH -tip 9/9] kprobes/x86: ftrace based optiomization for x86 Masami Hiramatsu
2012-05-29 22:45 ` [RFC PATCH -tip 0/9]ftrace, kprobes: Ftrace-based kprobe optimization Steven Rostedt
2012-05-30 6:59 ` Masami Hiramatsu
2012-05-30 11:39 ` Steven Rostedt
2012-05-31 15:01 ` Masami Hiramatsu
2012-05-31 15:15 ` Steven Rostedt
2012-05-31 15:28 ` Masami Hiramatsu
2012-06-01 13:36 ` Masami Hiramatsu
2012-06-01 14:20 ` Steven Rostedt
2012-06-04 11:45 ` Masami Hiramatsu
2012-06-04 12:07 ` Steven Rostedt
2012-06-04 12:24 ` Masami Hiramatsu [this message]
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