linux-kernel - Re: [GIT PULL] "perf probe" updates, kprobes jump optimization, for v2.6.34

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Message-ID: <4BB5FED3.4020809@redhat.com>
Date:	Fri, 02 Apr 2010 10:27:31 -0400
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Tony Luck <tony.luck@...el.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] "perf probe" updates, kprobes jump optimization, for
 	v2.6.34

Hi Tony,

Tony Luck wrote:
> On Mon, Mar 1, 2010 at 11:41 AM, Ingo Molnar <mingo@...e.hu> wrote:
>> Please pull the latest perf-probes-for-linus git tree from:
> 
> Since this went in I'm seeing:
> 
> kernel/kprobes.c:719: warning: ‘arm_kprobe’ defined but not used
> 
> from the arch/ia64/configs/zx1_defconfig build on ia64
> 
> Looks to be because that config ends up with:
> 
> CONFIG_KPROBES=y
> 
> together with
> 
> # CONFIG_DEBUG_FS is not set

Ah, thank you for reporting!
Hmm, it seems that the place of definitions of enable_kprobe/disable_kprobe
which call arm_kprobe/disarm_kprobe, are incorrect, because those functions
are just API and don't depend on debugfs.
I'll fix that.


Thank you,

> 
> -Tony
> --
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-- 
Masami Hiramatsu
e-mail: mhiramat@...hat.com
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