From: "Vamsi Krishna S ." <vamsi@in.ibm.com>
To: Rusty Lynch <rusty@linux.co.intel.com>
Cc: linux-kernel@vger.kernel.org, richard <richardj_moore@uk.ibm.com>
Subject: Re: Multiple kprobes per address
Date: Tue, 12 Nov 2002 14:03:08 +0530 [thread overview]
Message-ID: <20021112140308.A1055@in.ibm.com> (raw)
In-Reply-To: <002e01c289b1$2c83b140$77d40a0a@amr.corp.intel.com>; from rusty@linux.co.intel.com on Mon, Nov 11, 2002 at 10:35:56AM -0800
On Mon, Nov 11, 2002 at 10:35:56AM -0800, Rusty Lynch wrote:
> I was really only concerned with multiple consumers of kprobes. So if
> I were to create some tool that used kpobes to hook into the kernel, and
> someone else were to create another tool that solved a different problem
> but also used kprobes then the two tools wouldn't play nice with each other.
There will be a problem when both the tools (built on top of kprobes) try
to place probes at the same address: only the first probe actually succeds,
the second one gets -EEXIST from register_kprobe.
This could be made to work, but at the moment, it seems unnecessary
complication to me. Lets reconsider it when it really becomes a problem.
Thanks,
Vamsi.
--
Vamsi Krishna S.
Linux Technology Center,
IBM Software Lab, Bangalore.
Ph: +91 80 5044959
Internet: vamsi@in.ibm.com
prev parent reply other threads:[~2002-11-12 8:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-08 21:00 Multiple kprobes per address Rusty Lynch
2002-11-11 8:05 ` Vamsi Krishna S .
2002-11-11 18:35 ` Rusty Lynch
2002-11-12 8:33 ` Vamsi Krishna S . [this message]
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