linux-kernel - Re: [PATCH 4/7] kprobes: Support probing module _

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Date:	Wed, 12 Nov 2008 21:26:29 +0530
From:	Ananth N Mavinakayanahalli <ananth@...ibm.com>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Jim Keniston <jkenisto@...ibm.com>,
	David Miller <davem@...emloft.net>,
	Rusty Russell <rusty@...tcorp.com.au>,
	LKML <linux-kernel@...r.kernel.org>,
	systemtap-ml <systemtap@...rces.redhat.com>
Subject: Re: [PATCH 4/7] kprobes: Support probing module __exit function

On Tue, Nov 11, 2008 at 03:56:58PM -0500, Masami Hiramatsu wrote:
> Allows kprobes to probe __exit routine.
> This adds flags member to struct kprobe. When module is freed(kprobes hooks
> module_notifier to get this event), kprobes which probe the functions in
> that module are set to "Gone" flag to the flags member. These "Gone" probes
> are never be enabled.
> Users can check the GONE flag through debugfs.
> 
> This also removes mod_refcounted, because we couldn't free a module if
> kprobe incremented the refcount of that module.
> 
> Signed-off-by: Masami Hiramatsu <mhiramat@...hat.com>

Acked-by: Ananth N Mavinakayanahalli <ananth@...ibm.com>
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