From: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Srinivasa Ds <srinivasa@in.ibm.com>,
linux-kernel@vger.kernel.org,
Masami Hiramatsu <mhiramat@redhat.com>,
Jim Keniston <jkenisto@us.ibm.com>,
rusty@rustcorp.com.au
Subject: Re: [RFC] [patch 1/2] add non_init_kernel_text_address
Date: Fri, 14 Dec 2007 13:21:06 +0530 [thread overview]
Message-ID: <20071214075106.GA13249@in.ibm.com> (raw)
In-Reply-To: <20071213230916.cd30de8c.akpm@linux-foundation.org>
On Thu, Dec 13, 2007 at 11:09:16PM -0800, Andrew Morton wrote:
> On Fri, 14 Dec 2007 12:25:30 +0530 Srinivasa Ds <srinivasa@in.ibm.com> wrote:
>
> > Since __init functions are discarded and its memory freed once
> > initialization completes, It would be better if we enable kprobes
> > to refuse probing __init functions. The attached patchset will do
> > that.
> >
> > This patch creates non_init_kernel_text_address() to identify
> > non_init text area.
> >
> > Iam open to suggestions for a better functionname.
> >
>
> It's not a great name. One wonders how it handles __exit text, for example.
When registering kprobes on modules, we 'get' a module refcount so the
probed module doesn't disappear from under us. When the probe is
unregistered, we 'put' the refcount. That works great for __exit text.
> regular_kernel_text_address()? Dunno.
Sounds better :-)
Ananth
next prev parent reply other threads:[~2007-12-14 7:51 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-14 6:55 [RFC] [patch 1/2] add non_init_kernel_text_address Srinivasa Ds
2007-12-14 6:57 ` [RFC] [patch 2/2] Refuse kprobe insertion on __init section code Srinivasa Ds
2007-12-14 7:09 ` [RFC] [patch 1/2] add non_init_kernel_text_address Andrew Morton
2007-12-14 7:51 ` Ananth N Mavinakayanahalli [this message]
2007-12-18 4:57 ` Rusty Russell
2007-12-18 6:46 ` Srinivasa Ds
2007-12-18 7:23 ` Rusty Russell
2007-12-19 5:11 ` Rusty Russell
2008-01-01 6:34 ` Srinivasa Ds
2007-12-14 9:30 ` Srinivasa Ds
2007-12-14 10:17 ` Srinivasa Ds
2007-12-14 12:46 ` Johannes Weiner
2007-12-17 10:15 ` Srinivasa Ds
2007-12-17 10:20 ` [RFC] [patch 2/2] Refuse kprobe insertion on __init section code Srinivasa Ds
2007-12-14 9:34 ` Srinivasa Ds
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