From: Namhyung Kim <namhyung.kim@lge.com>
To: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
        linux-kernel@vger.kernel.org, Hyeoncheol Lee <cheol.lee@lge.com>
Subject: Re: [QUESTION] Kprobes as a module?
References: <87zk99zwb8.fsf@sejong.aot.lge.com> <4FB2146E.20101@gmail.com>
Date: Tue, 15 May 2012 17:34:44 +0900
In-Reply-To: <4FB2146E.20101@gmail.com> (Cong Wang's message of "Tue, 15 May
	2012 16:31:42 +0800")
Message-ID: <87vcjxzvtn.fsf@sejong.aot.lge.com>
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Hi,

On Tue, 15 May 2012 16:31:42 +0800, Cong Wang wrote:
> On 05/15/2012 04:24 PM, Namhyung Kim wrote:
>> Hi,
>>
>> Probably a dumb question :).
>> What prevents the kprobes from being built as a module? We want to use
>> the kprobes on our systems, but some guys worried about potential
>> security problems. So it'd be great if we can enable/load kprobes as
>> needed and then disable/unload after using it. Is it a possible senario?
>>
>
> Kconfig prevents that:
>
> config KPROBES
>         bool "Kprobes"
>         depends on MODULES
>         depends on HAVE_KPROBES
>         select KALLSYMS
>
>
> so you can have either CONFIG_KPROBES=y or CONFIG_KPROBES=n, but not =m.

Sorry for an inaccurate question, my point was "Can I change it from
'bool' to 'tristate'"?

Thanks,
Namhyung
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