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

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Message-ID: <20100120064026.GC6588@in.ibm.com>
Date:	Wed, 20 Jan 2010 12:10:26 +0530
From:	Ananth N Mavinakayanahalli <ananth@...ibm.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Peter Zijlstra <peterz@...radead.org>,
	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>,
	"Frank Ch. Eigler" <fche@...hat.com>, linux-next@...r.kernel.org,
	"H. Peter Anvin" <hpa@...or.com>, utrace-devel@...hat.com,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus <torvalds@...ux-foundation.org>
Subject: Re: linux-next: add utrace tree

On Wed, Jan 20, 2010 at 07:28:34AM +0100, Ingo Molnar wrote:
> 
> * Ananth N Mavinakayanahalli <ananth@...ibm.com> wrote:
> 
> > On Wed, Jan 20, 2010 at 06:49:50AM +0100, Ingo Molnar wrote:

...
 
> > On the other hand, having ptrace/utrace in the -next tree will give it a
> > lot more testing, while any outstanding technical issues are being addressed.
> 
> Including experimental code that is RFC and which is not certain to go 
> upstream is certainly not the purpose of linux-next though.

OK.

> It will cause conflicts with various other trees and increases the overhead 
> all around. It also causes us to trust linux-next bugreports less - as it's 
> not the 'next Linux' anymore. Also, there's virtually no high-level technical 
> review done in linux-next: the trees are implicitly trusted (because they are 
> pushed by maintainers), bugs and conflicts are reported but otherwise it's a 
> neutral tree that includes pretty much any commit indiscriminately.
> 
> If you need review and testing there's a number of trees you can get inclusion 
> into.

So would -tip be one of them? If so could you pull the utrace-ptrace
branch in?

Or did you intend some other tree (random-tracing)? (Though I think a
ptrace reimplementation isn't 'random'-tracing :-))

Ananth
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