linux-kernel - Re: linux-next: add utrace tree

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Message-ID: <1264191376.4283.1590.camel@laptop>
Date:	Fri, 22 Jan 2010 21:16:16 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	"Frank Ch. Eigler" <fche@...hat.com>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Fr??d??ric Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	linux-next@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
	utrace-devel@...hat.com, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: linux-next: add utrace tree

On Fri, 2010-01-22 at 15:01 -0500, Frank Ch. Eigler wrote:
> So then there's uprobes, which is another potential utrace "killer
> app"

That's bollocks, uprobes is an utter and total mis-match for utrace.
Probing userspace is primarily about DSOs which is files and vma's, not
tasks.

You might maybe want a utrace interface to that, but that is largely
non-interesting.

IOW, we don't need utrace to make sensible use of uprobes.

(And when I speak of uprobes I mean the thing formerly called UBP)

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