linux-kernel - Re: [RFC] Userspace tracing memory mappings

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Message-ID: <y0m3aso9xj3.fsf@ton.toronto.redhat.com>
Date:	Wed, 23 Jan 2008 14:01:20 -0500
From:	fche@...hat.com (Frank Ch. Eigler)
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Cc:	Dave Hansen <haveblue@...ibm.com>, mbligh@...gle.com,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC] Userspace tracing memory mappings

Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca> writes:

> [...]  Since memory management is not my speciality, I would like to
> know if there are some implementation details I should be aware of
> for my LTTng userspace tracing buffers. Here is what I want to do
> [...]

Would you mind offering some justification for requiring a kernel
extension for user-space tracing?  What can the kernel enable in this
context that a user-space library (which you already assume will be
linked in) can't?

- FChE
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