linux-kernel - Re: [PATCH 9/18] 2.6.17.9 perfmon2 patch for review: kernel-level interface support

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Message-ID: <20060823152959.GD32725@infradead.org>
Date:	Wed, 23 Aug 2006 16:29:59 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	Stephane Eranian <eranian@...nkl.hpl.hp.com>
Cc:	linux-kernel@...r.kernel.org, eranian@....hp.com
Subject: Re: [PATCH 9/18] 2.6.17.9 perfmon2 patch for review: kernel-level interface support

On Wed, Aug 23, 2006 at 01:06:00AM -0700, Stephane Eranian wrote:
> This patch contains the kernel-level API support.
> 
> 
> Some users have requested the ability to create a monitoring session
> with perfmon2 from iside the kernel using a kernel thread. Perfmon2
> leverages a lot of kernel mechanisms which are not easy to use for
> inside the kernel: e.g. file descriptor, signals, system calls.

Again, please drop this.  There are no planned intree kernel users
so far, and once we add them we can architect a proper API for them.
Getting rid of this should also help to collapse the tons of useless
abstractions layers in the current perfmon code.

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